APACHE CORP - 10-K Annual Report

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

(MARK ONE)
[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
FOR THE FISCAL YEAR ENDED DECEMBER 31, 2002,
OR

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934
FOR THE TRANSITION PERIOD FROM TO

COMMISSION FILE NUMBER 1-4300

APACHE CORPORATION
A DELAWARE CORPORATION IRS EMPLOYER NO. 41-0747868

ONE POST OAK CENTRAL
2000 POST OAK BOULEVARD, SUITE 100
HOUSTON, TEXAS 77056-4400
TELEPHONE NUMBER (713) 296-6000

Securities Registered Pursuant to Section 12(b) of the Act:

Securities registered Pursuant to Section 12(g) of the Act: NONE

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes [X] No [ ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K. [ ]

Indicate by check whether registrant is an accelerated filer (as defined in
Rule 12b-2 of the Act). [ ]

Aggregate market value of the voting and non-voting common
equity held by non-affiliates of registrant as of June 28,
2002...................................................... $8,212,561,395
Number of shares of registrant's common stock outstanding as
of February 28, 2003...................................... 153,850,136

DOCUMENTS INCORPORATED BY REFERENCE:
Portions of registrant's proxy statement relating to registrant's 2003
annual meeting of stockholders have been incorporated by reference into Part III
hereof.
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TABLE OF CONTENTS

DESCRIPTION

All defined terms under Rule 4-10(a) of Regulation S-X shall have their
statutorily prescribed meanings when used in this report. Quantities of natural
gas are expressed in this report in terms of thousand cubic feet (Mcf), million
cubic feet (MMcf), billion cubic feet (Bcf) or trillion cubic feet (Tcf). Oil is
quantified in terms of barrels (bbls); thousands of barrels (Mbbls) and millions
of barrels (MMbbls). Natural gas is compared to oil in terms of barrels of oil
equivalent (boe) or million barrels of oil equivalent (MMboe). Oil and natural
gas liquids are compared with natural gas in terms of million cubic feet
equivalent (MMcfe) and billion cubic feet equivalent (Bcfe). One barrel of oil
is the energy equivalent of six Mcf of natural gas. Daily oil and gas production
is expressed in terms of barrels of oil per day (b/d) and thousands or millions
of cubic feet of gas per day (Mcf/d and MMcf/d, respectively) or millions of
British thermal units per day (MMBtu/d). Gas sales volumes may be expressed in
terms of one million British thermal units (MMBtu), which is approximately equal
to one Mcf. With respect to information relating to our working interest in
wells or acreage, "net" oil and gas wells or acreage is determined by
multiplying gross wells or acreage by our working interest therein. Unless
otherwise specified, all references to wells and acres are gross.

PART I

ITEM 1.BUSINESS

GENERAL

Apache Corporation, a Delaware corporation formed in 1954, is an
independent energy company that explores for, develops and produces natural gas,
crude oil and natural gas liquids. In North America, our exploration and
production interests are focused in the Gulf of Mexico, the Gulf Coast, the
Permian Basin, the Anadarko Basin and the Western Sedimentary Basin of Canada.
Outside of North America we have exploration and production interests offshore
Western Australia, offshore and onshore Egypt, offshore The People's Republic of
China and onshore Argentina, and exploration interests in Poland. Our common
stock, par value $1.25 per share, has been listed on the New York Stock Exchange
since 1969, and on the Chicago Stock Exchange since 1960. Through our website,
http://www.apachecorp.com, you can access electronic copies of documents Apache
files with the Securities and Exchange Commission (SEC), including our annual
reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form
8-K and any amendments to these reports. Access to these electronic filings is
available as soon as practicable after filing with the SEC.

We hold interests in many of our U.S., Canadian and international
properties through operating subsidiaries, such as Apache Canada Ltd., DEK
Energy Company (DEKALB), Apache Energy Limited (AEL), Apache International,
Inc., and Apache Overseas, Inc. Properties referred to in this document may be
held by those subsidiaries. We treat all operations as one line of business.

2002 RESULTS

Apache posted a very good year. Rising prices and production within one
percent of 2001's record levels combined to make 2002 our third best year in
terms of earnings and cash flow. Strong financial performance coupled with
curtailed capital spending enabled us to achieve our primary 2002 objective of
enhancing our financial flexibility. Our conservative approach to capital
spending through most of 2002 enabled us to further strengthen our balance sheet
and maintain a senior unsecured long-term debt rating of A3 from Moody's, and A-
from Standard and Poor's and Fitch rating agencies, all of which were reaffirmed
by those agencies after the announcement of our largest acquisition to-date
following year-end from BP p.l.c. (BP). Our 2002 income attributable to common
stock totaled $544 million on total revenues of $2.6 billion, while cash
provided by operating activities was $1.4 billion, a 28 percent decrease from
2001. Our average daily production for the year was 161 Mbbls of oil and natural
gas liquids and 1,080 MMcf of natural gas.

We increased our total reserves by four percent, compared with the end of
2001, resulting in 1,313 MMboe of estimated proved reserves at year-end, 51
percent of which were natural gas. Even though Apache did not pursue an active
acquisition program for most of 2002, at the end of the year we began seeking
acquisitions of additional properties. We completed two acquisitions of
producing properties in Canada and one in South Louisiana, described below in
the discussion of our U.S. and Canadian operations. In January 2003, we agreed
to purchase properties from subsidiaries of BP in the Gulf of Mexico and in the
North Sea offshore the United Kingdom for $1.3 billion (subject to normal
closing adjustments and the exercise of preferential rights by third parties),
which will be our largest acquisition to-date. The Company closed the Gulf of
Mexico portion on March 13, 2003 at an adjusted price of $509 million, which has
estimated proved reserves of 72.2 MMboe. The price was adjusted from the
originally announced $670 million to account for the exercise of preferential
rights by third parties involved in some of the properties (a reduction of $70
million), production and expenses since January 1, 2003, the effective date of
the transaction, and other minor adjustments. The North Sea portion is expected
to close early in the second quarter of 2003. The acquisition is being funded by
a combination of proceeds from the equity offering we completed in January 2003,
cash from our operations and debt.

Per share results have been adjusted for the 10 percent common stock
dividend paid on January 21, 2002, to our shareholders of record on December 31,
2001, and the five percent common stock dividend to be paid on April 2, 2003, to
our shareholders of record on March 12, 2003. The stock dividends reflect our
board of

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directors' belief that we can reward our shareholders while remaining focused on
our primary objective of building Apache to last by achieving profitable growth.

OUR GROWTH STRATEGY

Throughout our 48-year history, Apache has been and continues to be driven
to grow. It is a constant pursuit and part of our culture. However, it is
tempered by the desire to grow economically rather than to grow at any price.

At this point in our progression we have developed our abilities to grow
through drilling, through acquisitions, or through a combination of both,
depending on what the environment gives us.

As indicated in this section a year ago, early in 2002, we planned to
reduce spending on both drilling and acquisition opportunities in favor of
paying down debt and adding financial flexibility. This was not driven by a weak
balance sheet (in fact our balance sheet was then among the strongest in our
sector), it was driven by a highly uncertain industry and economic environment
in which drilling costs were relatively high and prices, for natural gas in
particular, were relatively low and extremely volatile. In addition, our
assessment was that with reasonably priced properties unavailable for purchase,
it was prudent to curtail capital expenditures and wait for better opportunities
to present themselves.

As drilling costs came down and product prices rose during 2002, Apache
authorized incremental drilling and operating capital increases. For example,
when quality properties became available in South Louisiana at year-end from a
privately-held company at a reasonable price, we acted. Despite these drilling
and acquisition capital increases, Apache's 2002 capital expenditures
approximated half those of the prior year, driving a reduction in debt as a
percent of capitalization. Using a strict definition to calculate debt as a
percentage of capitalization, Apache's ratio dropped to 30 percent at year-end
2002 from 34 percent a year earlier. However, the strict measurement ignores two
important considerations particular to Apache's situation. Our balance sheet
includes preferred interests of subsidiaries ($437 million and $441 million at
December 31, 2002 and 2001, respectively) which, although not debt, are
redeemable under certain circumstances and, in our opinion, should be included
in the calculation. We also occasionally have short-term investments and cash
balances ($52 million and $139 million at December 31, 2002 and 2001,
respectively), both of which are available to pay down debt and, in our opinion,
should be subtracted from debt. Allowing for both of these factors, Apache's
adjusted debt-to-capitalization ratio was 34 percent at year-end, higher than
the strict formula, but below the comparable 37 percent ratio at the end of
2001. We believe this is a more conservative way of expressing this ratio.

Apache's financial discipline paid off. Not only were our 2002 finding and
acquisition costs quite competitive within our industry sector, our financial
strength left us as the only publicly traded independent in the U.S. with a
single-A rating by both Moody's and Standard and Poor's.

Our strategy provided us with the financial wherewithal sufficient to
pursue the asset acquisition from BP. This transaction took only 35 days from
initial discussions on December 9, 2002 to the signing of a purchase and sale
agreement and announcement on January 13, 2003. With completion of this
purchase, Apache's production and reserve growth is virtually assured for 2003,
if our assumptions regarding prices and the opportunities available on the BP
properties are correct. Given the existing outlook for high commodity prices, we
expect the BP acquisition to be accretive to both cash flow and earnings.

Looking ahead, we will continue to pursue growth that is economic, whether
it is through drilling, acquisitions, or both. Although we review industry
conditions and our capital expenditures constantly, present conditions are quite
attractive for both drilling and acquisitions and are likely to lead to
increases in drilling and acquisition expenditures in 2003.

REVIEW OF COMPANY'S WORLDWIDE OPERATING AREAS

Our portfolio approach provides diversity in terms of hydrocarbon mix (oil
or gas), geologic risk and geographic location. In each of our core producing
areas, we have built teams that have the technical

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knowledge, sense of urgency and the desire to wring more out of Apache's assets.
Our local expertise also provides an advantage in day-to-day operations and when
acquisition opportunities arise in our core areas.

We currently have interests in seven countries: the United States, Canada,
Egypt, Australia, China, Poland and Argentina. After closing the BP transaction,
we will add a new core area, the U.K. North Sea. In the U.S., our exploration
and production activities are divided into two regions: Gulf Coast and Central.
In 2001, Apache had three domestic regions, which were reconfigured into the
current two in April 2002. At year-end, approximately 78 percent of our
estimated proved reserves were located in North America. Outside North America,
our exploration and production activities are focused primarily in Egypt and
Australia. Additionally, we have a development project underway in China that is
expected to commence production in 2003, and we have a small production interest
in Argentina. We also own exploration acreage in Poland.

The table below sets out a brief comparative summary of certain 2002 data
for our core geographic areas. More detailed information regarding the natural
gas, oil, and natural gas liquids (NGLs) production and average prices received
in 2002, 2001 and 2000 for the core geographic areas is available in
Management's Discussion and Analysis of Financial Condition and Results of
Operations in Item 7 of this Form 10-K. In addition, information concerning the
amount of revenue, expenses, operating income (loss) and total assets
attributable to each of the same geographic areas is set forth in Note 15,
Supplemental Oil and Gas Disclosures (Unaudited), and Note 14, Business Segment
Information, both in Item 15 of this Form 10-K.

The following core area discussions include references to the 2003 Plan.
These represent initial estimates only and will be reviewed and revised
throughout the year in light of changing industry conditions.

United States

In the U.S. we completed one significant acquisition during the year with
the purchase of 234,000 net acres in South Louisiana, holding estimated net
proved reserves of 178 Bcf of gas equivalent, together with access to 849 square
miles of 3-D seismic data and fee interests in most of the acreage, for $259
million. Anticipated net daily production from these properties is expected to
approximate 55 MMcf of natural gas and 2,100 barrels of oil in 2003. The
transaction was effective December 1, 2002. We also entered into a separate
exploration joint venture with the seller under which the seller will generate
exploration prospects on certain South Louisiana acreage for a total cost of $25
million over two years. The new properties are in our Gulf Coast region.

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Our curtailment of capital spending in the first half of the year did not
stop us from having a busy year in the U.S.: we completed 168 out of 194 total
wells and replaced 71 percent of our domestic production through drilling. A
continuing goal is to drill quality prospects in and around our large domestic
reserve and production bases.

Gulf Coast -- The Gulf Coast region comprises our interests in and along
the Gulf of Mexico, primarily in the areas in and offshore Louisiana and Texas.
In 2002, the Gulf Coast region was our leading region for production volumes and
revenues. This region performed 586 workover and recompletion operations during
2002 and completed 41 out of 56 total wells drilled. As of year-end 2002, Gulf
Coast accounted for 21 percent of our estimated proved reserves. In 2003, we
currently plan on spending approximately $350 million drilling an estimated 90
wells and continuing our production enhancement program and exploiting the
properties acquired from BP in March 2003.

Central -- The Central region includes assets in the Permian Basin of west
Texas and New Mexico, the San Juan Basin of New Mexico, east Texas and the
Anadarko Basin of western Oklahoma. At year-end 2002, the Central region
accounted for 27 percent of our estimated proved reserves, the second largest in
the company. During 2002, we participated in 138 wells, 127 of which were
completed as productive wells, replacing 96 percent of the region's production
from drilling. Apache performed 519 workovers and recompletions in the region
during the year. In 2003, we currently plan to spend approximately $100 million
drilling an estimated 200 wells and continuing our production enhancement
programs.

Marketing -- In July 1998, we entered into a gas purchase agreement with
Cinergy Marketing and Trading, LLC (Cinergy) to market most of our U.S. natural
gas production for a 10-year period, with an option by either party, after prior
notice, to terminate after six years. We also agreed to work with Cinergy to
develop terms for the marketing of most of our Canadian gas production. In
December 1998, however, Apache and Cinergy agreed to postpone the negotiation of
Canadian gas sales terms. During the period of the gas purchase agreement, we
are generally obligated to deliver our domestic gas production to Cinergy and,
under certain circumstances, may have to make payments to Cinergy if certain gas
throughput thresholds are not met. All throughput thresholds have been met to
date. The prices received for our gas production under this agreement are based
on published indexes. Disputes have arisen between Cinergy and Apache concerning
various matters, including Cinergy's claim to market our Canadian gas
production. As a result, in September 2001, Cinergy commenced an arbitration
proceeding seeking, among other things, specific performance to require us to
sell our Canadian gas production to Cinergy or pay damages. We are disputing
Cinergy's assertions (including their claim to market our Canadian production),
filing a general denial and counterclaim against Cinergy for amounts arising
from, among other things, an audit commenced in 2001. We do not believe the
arbitration outcome will be material to our financial position or results of
operations. We continue to market most of our U.S. gas production through
Cinergy, although we are actively discussing with Cinergy our gas marketing
arrangements and a resolution of our disputes.

We used long-term, fixed-price physical contracts to lock in a portion of
our domestic future natural gas production at a fixed price. These contracts
represented approximately 11 percent of our 2002 domestic natural gas
production. The contracts provide protection to the Company in the event of
decreasing natural gas prices.

We market our own U.S. crude oil with most of it sold through lease-level
marketing to refiners, traders and transporters. Contracts are generally less
than 30 days and renew automatically until canceled. The oil contracts provide
for sales at specified prices, or at prices that change with market conditions.

Canada

Our exploration and development activity in the Canadian region is
concentrated in the Provinces of Alberta, British Columbia, Saskatchewan and the
Northwest Territories. The region comprises 30 percent of our estimated proved
reserves, the largest in the Company. We hold over four million net acres in
Canada, the largest of the North American regions.

4

2002 -- We completed two acquisitions in Alberta, Canada; purchasing
properties in August from Burlington Resources affiliates with estimated proved
reserves of 4.8 MMboe for $26 million and completing the purchase of properties
from Canadian affiliates of ConocoPhillips in October with estimated proved
reserves of 10.7 MMboe for $60 million. Canada was our most active region for
drilling in 2002, with Apache participating in 836 gross wells, 799 of which
were completed as producers. We also conducted 707 workover and recompletion
projects. We replaced 144 percent of our Canadian production through drilling
and another 54 percent through acquisition.

2003 -- We currently plan to spend approximately $400 million drilling an
estimated 900 wells, continuing the exploration program, the exploitation of the
acquired properties and developing our gas processing infrastructure.

Marketing -- Our Canadian natural gas sales include sales to supply
aggregators, to whom we dedicate reserves, and direct sales to brokers and
end-users in the United States and Canada. With the expansion of pipeline
transport capacity out of Canada in recent years, Canadian prices have
strengthened and become more closely correlated to United States domestic
prices. To diversify our market exposure, we transport natural gas via our firm
transportation contracts to California (12 MMcf/d), the Chicago area (40
MMcf/d), and Eastern Canada (2 MMcf/d), which are included in Note 11, under
Item 15 of this Form 10-K. Pursuant to an agreement entered into in 1994, we are
also selling 5 MMcf/d of natural gas to the Hermiston Cogeneration Project,
located in the Pacific Northwest of the United States. In 1996, we entered an
agreement to sell 5 MMcf/d into Michigan over a 10-year term. In 2002, with the
acquisition from ConocoPhillips, we entered into two agreements to sell 5 MMcf/d
each into the Northeastern U.S. with one terminating in 2007 and the other in
2008, 3 MMcf/d to an Eastern Canadian Cogeneration project until 2011, and 5
MMcf/d to a broker netback pool until 2005. The prices we receive under these
contracts are generally based on market indices.

Oil and NGLs produced from our Canadian properties are sold to crude oil
purchasers or refiners at market prices, which depend on worldwide crude prices
adjusted for transportation and crude quality.

Egypt

In Egypt, our operations are generally conducted pursuant to production
sharing contracts under which contractor partners pay all operating and capital
costs for exploration and development. A percentage of the production, usually
up to 40 percent, is available to the contractor group to recover operating and
capital costs. The balance of the production is allocated between this
contractor group and the Egyptian General Petroleum Corporation (EGPC) on a
contractually defined basis. Apache is the largest leaseholder and the most
active driller in the Western Desert. Egypt is the country with our largest
single acreage position. As of December 31, 2002, we held over 6.9 million net
acres encompassing 13 concessions (12 operated). Apache is the largest producer
of liquid hydrocarbons and the second largest producer of natural gas in the
Western Desert and operates 11 percent of Egypt's daily oil and gas output.

2002 -- Egypt accounted for 22 percent of production revenues on 19 percent
of total production for the year and accounted for 10 percent of total proved
reserves at December 31, 2002. During the year we increased production
significantly in Egypt. Net oil production grew by 12 percent and net gas
production by 28 percent over the prior year. The production growth occurred in
most of our concessions, with the most significant increases being in the South
Umbarka concession, where gross oil and condensate production increased from
2,520 b/d to 9,650 b/d (a 283 percent increase), and the Umbarka concession,
where gross oil production increased from 1,277 b/d to 7,127 b/d or 458 percent.
Also, three concessions (Ras Kanayes, Matruh, and Northeast Abu Gharadig)
commenced production in 2002.

Apache had an active onshore drilling program in Egypt, completing 45 of 55
gross wells, for a success rate of 82 percent. The onshore program was weighted
more than 75 percent to development activity with the remaining to exploration
drilling. Apache also drilled four successful exploration wells in the deepwater
portion of the West Mediterranean block, including the first deepwater oil
discovered in the Nile Delta at the El King-1X well. On March 4, 2003, we
announced that the fifth deepwater well had successfully appraised the earlier
discoveries. No reserves have been recorded to-date for the deepwater wells.
Reserve recognition
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and proper scaling of the significant future development infrastructure are
pending negotiation and completion of a sales contract for this gas with EGPC.

Apache made six new field discoveries onshore in 2002. The most significant
were Selkit 1X in the South Umbarka concession, which flowed 5,103 b/d from
Kharita sands; Emerald 1X in the Ras El Hekma concession, which flowed 16.9
MMcf/d and 4,285 b/d of condensate from the AEB 6 sand; and the Tut 52 in the
Khalda concession, which flowed 29.2 MMcf/d and 781 b/d of condensate from
Khatatba sands. In addition to these larger discoveries, Apache also had three
new field discoveries in its East Bahariya concession and drilled 10 consecutive
successful development wells.

2003 -- We currently plan to spend approximately $250 million to drill more
than 100 wells and continue exploitation.

Marketing -- In 1996, we and our partners in the Khalda Block entered into
a take-or-pay contract with EGPC, which obligates EGPC to pay for 75 percent of
200 MMcf/d of future production of gas from the Khalda Block. In late 1997, the
same partners entered into a supplement to the contract with EGPC to sell an
additional 50 MMcf/d. In connection with our acquisition of interests from
Repsol YPF (Repsol) in 2001, we acquired rights under an existing gas sales
contract for 25 MMcf/d from the South Umbarka area. Gas sales from the contracts
are based on a price that is the energy equivalent of 85 percent of the price of
Suez Blend crude oil, FOB Mediterranean port. Sales of gas under the contract
began in 1999 upon completion of a gas pipeline from the Khalda Block. In 2000,
other producers agreed to accept a negotiated price with a group of industry
players for an alternative gas pricing formula for certain quantities of gas
purchased from them. This "Industry Pricing" is a sliding scale based on
Dated-Brent crude oil with a minimum of $1.50 per MMbtu and a maximum of $2.65
per MMbtu. These latest agreements do not impact our existing gas sales
contracts in the Khalda Block or at Qarun. However, we have entered into new gas
sales contracts containing "Industry Pricing" at our Matruh, Ras Kanayes, Ras El
Hekma, and Akik development leases.

In Egypt, oil from the Qarun concession and other nearby Western Desert
blocks is delivered by pipeline to tanks at the Dashour tank farm northeast of
the Qarun Block. At the discretion of Arab Petroleum Pipeline Company, the
operator of the SUMED pipelines, oil from the Qarun Block is pumped into the
42-inch diameter pipelines, which transport significant quantities of Egyptian
and other crude oil from the Gulf of Suez to Sidi Kerir on the Mediterranean
Coast. Alternatively, oil can be transported via pipeline owned by Petroleum
Pipeline Company (PPC) to the Mostorad Refinery south of Cairo. In Egypt, all
our oil production is sold to EGPC on a spot basis at a "Western Desert" price
(indexed to Brent Crude Oil). We have the right to export our Egyptian crude oil
production, however, EGPC has first call on the purchase of our Egyptian crude
oil and has exercised this right. We expect EGPC to continue to exercise its
call right. Deteriorating economic conditions during 2001 and 2002 in Egypt have
lessened the availability of U.S. dollars, resulting in a one to two month delay
in receipts from EGPC. While the delay in payment has not significantly improved
or deteriorated in 2002, continuation of the hard currency shortage in Egypt
could lead to further delays, deferrals of payment or non-payment in the future.

Australia

2002 -- We produced 18.2 MMboe in Australia (15 percent of our total)
generating $334 million of production revenues. Estimated proved reserves in
Australia were 11 percent of our year-end total. During the year we participated
in drilling 25 wells, 10 completed as producers, and in five workover and
recompletion projects.

We had a successful exploration year in Australia, with discoveries at
Double Island, Victoria, Pedirka, and Little Sandy in the first quarter of the
year. Production from the Victoria, Pedirka, and Little Sandy oil fields
commenced in November 2002, eight months from discovery, while the Double Island
oil development began production in February 2003, 12 months after discovery.
There were three additional discoveries over the remainder of the year at
Hoover, South Simpson, and Endymion.

On the development side, we had six new oil fields and one new gas field
that commenced production during 2002 in the Carnarvon Basin offshore Western
Australia. The Gibson and South Plato oil fields

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(68.5 percent interest) were developed from a common facility and brought
on-line in June 2002 at a combined initial average rate of 10,400 gross barrels
of oil per day. The South Simpson oil field (68.5 percent interest) was placed
on production in October at an average initial rate of 3,000 gross barrels of
oil per day. The Victoria, Pedirka, and Little Sandy oil fields (68.5 percent
interest) were developed from a common facility and commenced production in
November at a combined average rate of 10,000 barrels of oil per day. The
Endymion gas field (68.5 percent interest) commenced production in November at
an average initial rate of 18 MMcf/d.

2003 -- In February 2003, Apache brought the Double Island oil development
(68.5 percent interest) on-line at an average rate of 8,000 barrels of oil per
day. For 2003, we have budgeted expenditures of $100 million for an estimated 30
exploration wells, five development wells, and various production development,
enhancement and other capital projects.

Marketing -- In Australia we entered into two new gas sales contracts and
extended two existing gas sales contracts during 2002, bringing our total to 25
contracts. In aggregate, we committed a further 655 Bcf for delivery. Under the
largest contract, we will supply more than 600 Bcf over a 25-year period
commencing in July 2005. Our total Australian delivery rates are expected to
average approximately 100 MMcf/d in 2003. Generally, natural gas is sold in
Western Australia by AEL under long-term contracts, many of which contain
escalation clauses that provide for an annual increase in the contract price
based on the Australian consumer price index. The contract price escalates at an
average of 80 percent of the index. These contracts reduce gas price volatility
in Australia.

Other International

We have exploration and production interests offshore China and in
Argentina, and exploration interests in Poland.

We are the operator, with a 24.5 percent interest, of the Zhao Dong Block
in Bohai Bay, offshore China. In 1994 and 1995, discovery wells tested at rates
between 1,300 and 4,000 b/d of oil. In early 1997, one well tested at rates up
to 11,571 b/d of oil and another tested at rates up to 15,359 b/d. An overall
development plan for the C and D Fields in the Zhao Dong Block was approved by
Chinese authorities in December 2000. Work commenced in 2001 with the awarding
of contracts for development drilling and the construction of production
facilities in accordance with the approved overall development plan. We
currently plan to spend an estimated $25 million this year. First production is
expected in the second half of 2003.

We obtained our first acreage position in Poland in 1997 when we assumed
operatorship and a 50 percent interest in over 5.5 million gross acres from FX
Energy, Inc. At year-end 2002, we had 1,353,307 net undeveloped acres in Poland.
In 2002, we recorded additional impairments to our properties in Poland, as
described in Item 7 of this Form 10-K. At December 31, 2002, the Company had $13
million of unproved property costs remaining. Apache is considering various
alternatives for maximizing the value of the Poland assets, including sale to a
third party. This evaluation may result in additional impairments in 2003.

In 2001, we acquired exploration and production assets of Fletcher
Challenge and Anadarko Petroleum in Argentina. After these transactions, we held
interests in a number of blocks in Argentina's Neuquen basin. We are the
operator, with a 100 percent interest, of the Lindero de Piedra and El
Santiagueno Blocks. We also hold interests in the following blocks: Agua Salada
(30 percent), Faro Virgenes (20 percent), CNQ-16 (seven percent) and CNQ-16A (25
percent). For the year, these interests held less than one percent of our proved
reserves and generated small amounts of production and revenue. Our total net
acreage in Argentina is 367,690 acres, with 324,790 developed and 42,900
undeveloped at year-end 2002. In light of the social and economic turmoil in
Argentina, we have limited our investments. Hence, our 2003 Plan does not
presently contemplate any drilling activity. Our staff will concentrate on
identifying opportunities and strategies for growth that might be implemented in
anticipation of improved political and economic conditions.

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DRILLING STATISTICS

Worldwide, in 2002, we participated in drilling 1,114 gross new wells, with
1,022 (92 percent) completed as producers. Canada was our most active region,
drilling 836 gross new wells, 599 of which were shallow development wells
drilled in the Hatton field. Canada's success rate was 96 percent. We also
performed over 2,066 major workovers and recompletions during the year. Our
drilling activities in the United States generally concentrate on exploitation
of existing, producing fields rather than exploration. As a general matter, our
international and Canadian drilling activities focus more on exploration
drilling. In addition to our completed wells at year-end, we were participating
in several wells that had not yet reached completion: four in the U.S. (2.5
net); three in Canada (2.1 net); nine in Egypt (7.2 net); and one in Australia
(0.7 net).

The following table shows the results of the oil and gas wells drilled and
tested for each of the last three fiscal years:

8

PRODUCTIVE OIL AND GAS WELLS

The number of productive oil and gas wells, operated and non-operated, in
which we had an interest as of December 31, 2002, is set forth below:

GROSS AND NET UNDEVELOPED AND DEVELOPED ACREAGE

The following table sets out our gross and net acreage position in each
country where we have operations.

ESTIMATED PROVED RESERVES AND FUTURE NET CASH FLOWS

As of December 31, 2002, Apache had total estimated proved reserves of 637
million barrels of crude oil, condensate and NGLs and 4.1 Tcf of natural gas.
Combined, these total estimated proved reserves are equivalent to 1.3 billion
barrels of oil or 7.9 Tcf of gas. The company's reserves have grown for the 17th
consecutive year. Estimated proved developed reserves comprise 72 percent of our
total estimated proved reserves on a boe basis.

The Company's estimates of proved reserves and proved developed reserves at
December 31, 2002, 2001 and 2000, changes in proved reserves during the last
three years, and estimates of future net cash flows and discounted future net
cash flows from proved reserves are contained in Footnote 15, Supplemental Oil
and Gas Disclosures (Unaudited), in the Apache Corporation 2002 Consolidated
Financial Statements of Item 15 of this Form 10-K.

Proved oil and gas reserves are the estimated quantities of natural gas,
crude oil, condensate and NGLs that geological and engineering data demonstrate
with reasonable certainty to be recoverable in future years from known
reservoirs under existing economic and operating conditions. Reserves are
considered proved if economical producibility is supported by either actual
production or conclusive formation tests. Reserves that can be produced
economically through application of improved recovery techniques are included in
the "proved" classification when successful testing by a pilot project or the
operation of an installed program in the reservoir provides support for the
engineering analysis on which the project or program is based. Proved developed
oil and gas reserves can be expected to be recovered through existing wells with
existing equipment and operating methods.

9

Apache emphasizes that the volumes of reserves are estimates which, by
their nature, are subject to revision. The estimates are made using available
geological and reservoir data, as well as production performance data. These
estimates are reviewed annually and revised, either upward or downward, as
warranted by additional performance data.

We engage an independent petroleum engineering firm to review our estimates
of proved hydrocarbon liquid and gas reserves. While this firm doesn't evaluate
our entire reserve base, they do concentrate on those reserves that represent a
substantial percentage of the Securities and Exchange Commission (SEC) value.
During 2002, 2001 and 2000, their review covered 68, 61 and 72 percent of the
SEC value, respectively.

RISK FACTORS RELATED TO OUR BUSINESS AND OPERATIONS

ACQUISITIONS OR DISCOVERIES OF ADDITIONAL RESERVES ARE NEEDED TO AVOID A
MATERIAL DECLINE IN RESERVES AND PRODUCTION

The rate of production from oil and gas properties generally declines as
reserves are depleted. Except to the extent that we acquire additional
properties containing proved reserves, conduct successful exploration and
development activities or, through engineering studies, identify additional
behind-pipe zones or secondary recovery reserves, our proved reserves will
decline materially as reserves are produced. Future oil and gas production is,
therefore, highly dependent upon our level of success in acquiring or finding
additional reserves.

SUBSTANTIAL COSTS INCURRED TO CONFORM TO GOVERNMENT REGULATION OF THE OIL AND
GAS INDUSTRY

Our exploration, production and marketing operations are regulated
extensively at the federal, state and local levels, as well as by other
countries in which we do business. We have made and will continue to make all
necessary expenditures in our efforts to comply with the requirements of
environmental and other regulations. Further, the oil and gas regulatory
environment could change in ways that might substantially increase these costs.
Hydrocarbon-producing states regulate conservation practices and the protection
of correlative rights. These regulations affect our operations and limit the
quantity of hydrocarbons we may produce and sell. In addition, at the U.S.
federal level, the Federal Energy Regulatory Commission regulates interstate
transportation of natural gas under the Natural Gas Act. Other regulated matters
include marketing, pricing, transportation and valuation of royalty payments.

SUBSTANTIAL COSTS INCURRED RELATED TO ENVIRONMENTAL MATTERS

We, as an owner or lessee and operator of oil and gas properties, are
subject to various federal, provincial, state, local and foreign country laws
and regulations relating to discharge of materials into, and protection of, the
environment. These laws and regulations may, among other things, impose
liability on the lessee under an oil and gas lease for the cost of pollution
clean-up resulting from operations, subject the lessee to liability for
pollution damages, and require suspension or cessation of operations in affected
areas.

We maintain insurance coverage, which we believe is customary in the
industry, although we are not fully insured against all environmental risks. We
are not aware of any environmental claims existing as of December 31, 2002,
which would have a material impact upon our financial position or results of
operations.

We have made and will continue to make expenditures in our efforts to
comply with these requirements, which we believe are necessary business costs in
the oil and gas industry. We have established policies for continuing compliance
with environmental laws and regulations, including regulations applicable to our
operations in all countries in which we do business. We also have established
operational procedures and training programs designed to minimize the
environmental impact on our field facilities. The costs incurred by these
policies and procedures are inextricably connected to normal operating expenses
such that we are unable to separate the expenses related to environmental
matters; however, we do not believe any such additional expenses are material to
our financial position or results of operations.

Apache manages its exposure to environmental liabilities on properties to
be acquired by identifying existing problems and assessing the potential
liability. The Company also conducts periodic reviews, on a company-wide basis,
to identify changes in its environmental risk profile. These reviews evaluate
whether
10

there is a probable liability, its amount, and the likelihood that the liability
will be incurred. The amount of any potential liability is determined by
considering, among other matters, incremental direct costs of any likely
remediation and the proportionate cost of our employees who are expected to
devote a significant amount of time directly to any possible remediation effort.
Our general policy is to limit any reserve additions to any incidents or sites
that are considered likely to result in an expected remediation cost exceeding
$100,000. Any environmental costs and liabilities not reserved are expensed when
incurred. In our estimation, these expenses are not likely to have a material
impact on our financial condition.

Although environmental requirements have a substantial impact upon the
energy industry, generally these requirements do not appear to affect us any
differently, or to any greater or lesser extent, than other companies in the
industry. We do not believe that compliance with federal, state, local or
foreign country provisions regulating the discharge of materials into the
environment, or otherwise relating to the protection of the environment, will
have a material adverse effect upon the capital expenditures, earnings or
competitive position of Apache or its subsidiaries; however, there is no
assurance that changes in or additions to laws or regulations regarding the
protection of the environment will not have such an impact.

COMPETITION WITH OTHER COMPANIES COULD HARM US

The oil and gas industry is highly competitive. Our business could be
harmed by competition with other companies. Because oil and gas are fungible
commodities, one form of competition is price competition. We strive to maintain
the lowest finding and production costs possible in order to maximize profits.
In addition, as an independent oil and gas company, we frequently compete for
reserve acquisitions, exploration leases, licenses, concessions and marketing
agreements against companies with financial and other resources substantially
larger than those we possess. Many of our competitors have established strategic
long-term positions and maintain strong governmental relationships in countries
in which we may seek new entry.

INSURANCE DOES NOT COVER ALL RISKS

Exploration for and production of oil and natural gas can be hazardous,
involving unforeseen occurrences such as blowouts, cratering, fires and loss of
well control, which can result in damage to or destruction of wells or
production facilities, injury to persons, loss of life, or damage to property or
the environment. We maintain insurance against certain losses or liabilities
arising from our operations in accordance with customary industry practices and
in amounts that management believes to be prudent; however, insurance is not
available to us against all operational risks.

RISKS ARISING FROM THE FAILURE TO FULLY IDENTIFY POTENTIAL PROBLEMS RELATED TO
ACQUIRED RESERVES OR TO PROPERLY ESTIMATE THOSE RESERVES

One of our primary growth strategies is the acquisition of oil and gas
properties. Although we perform a review of the acquired properties that we
believe is consistent with industry practices, such reviews are inherently
incomplete. It generally is not feasible to review in depth every individual
property involved in each acquisition. Ordinarily, we will focus our review
efforts on the higher-value properties and will sample the remainder. However,
even a detailed review of records and properties may not necessarily reveal
existing or potential problems, nor will it permit a buyer to become
sufficiently familiar with the properties to assess fully their deficiencies and
potential. Inspections may not always be performed on every well, and
environmental problems, such as ground water contamination, are not necessarily
observable even when an inspection is undertaken. Even when problems are
identified, we often assume certain environmental and other risks and
liabilities in connection with acquired properties. There are numerous
uncertainties inherent in estimating quantities of proved oil and gas reserves
and actual future production rates and associated costs with respect to acquired
properties, and actual results may vary substantially from those assumed in the
estimates (see above). In addition, there can be no assurance that acquisitions
will not have an adverse effect upon our operating results, particularly during
the periods in which the operations of acquired businesses are being integrated
into our ongoing operations.

11

INVESTORS IN OUR SECURITIES MAY ENCOUNTER DIFFICULTIES IN OBTAINING, OR MAY BE
UNABLE TO OBTAIN, RECOVERIES FROM ARTHUR ANDERSEN WITH RESPECT TO ITS AUDITS OF
OUR FINANCIAL STATEMENTS

On March 14, 2002, our previous independent public accountant, Arthur
Andersen LLP, was indicted on federal obstruction of justice charges arising
from the federal government's investigation of Enron Corp. On June 15, 2002, a
jury returned with a guilty verdict against Arthur Andersen following a trial.
As a public company, we are required to file with the SEC periodic financial
statements audited or reviewed by an independent public accountant. On March 29,
2002, we decided not to engage Arthur Andersen as our independent auditors, and
engaged Ernst & Young LLP to serve as our new independent auditors for 2002.
However, included in this annual report on Form 10-K, are financial data and
other information for 2001 and 2000 that were audited by Arthur Andersen.
Investors in our securities may encounter difficulties in obtaining, or be
unable to obtain, from Arthur Andersen with respect to its audits of our
financial statements relief that may be available to investors under the federal
securities laws against auditing firms.

ISSUES RELATED TO ARTHUR ANDERSEN LLP MAY IMPEDE OUR ABILITY TO ACCESS THE
CAPITAL MARKETS

In the unlikely event that the SEC ceases accepting financial statements
audited by Arthur Andersen LLP, we would be unable to access the public capital
markets unless Ernst & Young LLP, our current independent accounting firm, or
another independent accounting firm, is able to audit the financial statements
originally audited by Arthur Andersen. In addition, investors in any subsequent
offerings for which we use Arthur Andersen's audit reports will not be entitled
to recovery against Arthur Andersen under Section 11 of the Securities Act of
1933, as amended, for any material misstatements or omissions in those financial
statements. Furthermore, Arthur Andersen will be unable to participate in the
"due diligence" process that would customarily be performed by potential
investors in our securities, which process includes having Arthur Andersen
perform procedures to assure the continued accuracy of its report on our audited
financial statements and to confirm its review of unaudited interim periods
presented for comparative purposes. As a result, we may not be able to bring to
the market successfully an offering of our securities in a timely and efficient
manner. Consequently, our financing costs may increase or we may miss attractive
market opportunities.

EMPLOYEES

On December 31, 2002, we had 1,958 employees.

OFFICES

Our principal executive offices are located at One Post Oak Central, 2000
Post Oak Boulevard, Suite 100, Houston, Texas 77056-4400. At year-end 2002, we
maintained regional exploration and/or production offices in Tulsa, Oklahoma;
Houston, Texas; Calgary, Alberta; Cairo, Egypt; Perth, Western Australia;
Beijing, China; Warsaw, Poland; and Buenos Aires, Argentina. We established an
office in Aberdeen, Scotland early in 2003.

TITLE TO INTERESTS

We believe that our title to the various interests set forth above is
satisfactory and consistent with the standards generally accepted in the oil and
gas industry, subject only to immaterial exceptions which do not detract
substantially from the value of the interests or materially interfere with their
use in our operations. The interests owned by us may be subject to one or more
royalty, overriding royalty and other outstanding interests customary in the
industry. The interests may additionally be subject to obligations or duties
under applicable laws, ordinances, rules, regulations and orders of arbitral or
governmental authorities. In addition, the interests may be subject to burdens
such as production payments, net profits interests, liens incident to operating
agreements and current taxes, development obligations under oil and gas leases
and other encumbrances, easements and restrictions, none of which detract
substantially from the value of the interests or materially interfere with their
use in our operations.

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ITEM 2.PROPERTIES

For information on our domestic and international properties, see the
discussions in Item 1 of this Form 10-K under Review of Company's Worldwide
Operating Areas as identified by country. For tables setting out a description
of our drilling activities, well counts and acreage positions, see the
information in Item 1 under Drilling Statistics, Productive Oil and Gas Wells
and Gross and Net Undeveloped Acreage.

ITEM 3.LEGAL PROCEEDINGS

See the information set forth under the caption "Commitments and
Contingencies" in Note 11 to our financial statements under Item 15 of this Form
10-K.

ITEM 4.SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

No matters were submitted for a vote of security holders during the fourth
quarter of 2002.

PART II

ITEM 5.MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS

Apache common stock, par value $1.25 per share, is traded on the New York
Stock Exchange and the Chicago Stock Exchange under the symbol APA. The table
below provides certain information regarding our common stock for 2002 and 2001.
Prices were obtained from the New York Stock Exchange Composite Transactions
Reporting System; however, the per share prices and dividends shown in the
following table have been adjusted to reflect the 10 percent and five percent
stock dividends described below and have been rounded to the indicated decimal
place.

The closing price per share of our common stock, as reported on the New
York Stock Exchange Composite Transactions Reporting System for February 28,
2003 , was $65.28 ($62.17 adjusted for the five percent dividend). At February
28, 2003, there were 153,850,136 shares of our common stock outstanding
(161,542,642 shares adjusted for the five percent stock dividend) held by
approximately 8,000 shareholders of record and approximately 104,000 beneficial
owners.

We have paid cash dividends on our common stock for 36 consecutive years
through December 31, 2002. During 2000, we implemented a change in the payment
schedule for dividends on our common stock from a quarterly basis to an annual
basis; however, we later implemented a return to a quarterly dividend payment
schedule beginning in 2002. When, and if, declared by our board of directors,
future dividend payments will depend upon our level of earnings, financial
requirements and other relevant factors.

In 1995, our board of directors adopted a stockholder rights plan to
replace the former plan adopted in 1986. Under our stockholder rights plan, each
of our common stockholders received a dividend of one "preferred stock purchase
right" for each 1.155 outstanding shares of common stock (adjusted for the 10
percent and five percent stock dividends) that the stockholder owned. We refer
to these preferred stock purchase rights as the "rights." Unless the rights have
been previously redeemed, all shares of Apache common stock are issued with
rights. The rights trade automatically with our shares of common stock. Certain
triggering events will give the holders of the rights the ability to purchase
shares of our common stock, or the equivalent stock of a person that acquires
us, at a discount. The triggering events relate to persons or groups acquiring
an amount of our common stock in excess of a set percentage, or attempting to or
actually acquiring us. The details of how the rights operate are set out in our
certificate of incorporation and the Rights
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Agreement, dated January 31, 1996, between Apache and Wells Fargo Bank
Minnesota, N.A. (formerly Norwest Bank Minnesota, N.A.). Both of those documents
have been filed as exhibits to this Form 10-K and you should review them to
fully understand the effects of the rights. The purpose of the rights is to
encourage potential acquirers to negotiate with our board of directors before
attempting a takeover bid and to provide our board of directors with leverage in
negotiating on behalf of our stockholders the terms of any proposed takeover.
The rights may have certain anti-takeover effects. They should not, however,
interfere with any merger or other business combination approved by our board of
directors.

In May 1999, we issued 140,000 shares of 6.5 percent Automatically
Convertible Equity Securities, Conversion Preferred Stock, Series C (Series C
Preferred Stock) in the form of seven million depositary shares each
representing 1/50th of a share of Series C Preferred Stock. The depositary
shares were traded on the New York Stock Exchange and the Chicago Stock
Exchange. The Series C Preferred Stock was not subject to a sinking fund or
mandatory redemption. In 2000, Apache bought back 75,900 depositary shares at an
average price of $34.42 per share. The excess of the purchase price to reacquire
the depositary shares over the original issuance price, $330,000, is reflected
as a preferred stock dividend in the accompanying statement of consolidated
operations. The remaining depositary shares converted into 6,554,865 shares of
Apache common stock in 2002.

On September 13, 2001, our board of directors declared a 10 percent
dividend on our shares of common stock payable in common stock on January 21,
2002 to shareholders of record on December 31, 2001. Pursuant to the terms of
the declared 10 percent stock dividend, we issued 13,070,068 shares of our
common stock on January 21, 2002 to the holders of the 130,888,270 shares of
common stock outstanding on December 31, 2002. No fractional shares were issued
in connection with the stock dividend and cash payments totaling $891,132 were
made in lieu of fractional shares.

On December 18, 2002, our board of directors declared a five percent
dividend on our shares of common stock payable in common stock on April 2, 2003
to shareholders of record on March 12, 2003. Pursuant to the terms of the
declared five percent stock dividend, we expect to issue approximately 7,868,000
shares of our common stock on April 2, 2003 to the holders of the 153,867,875
shares of common stock outstanding on March 12, 2003. No fractional shares will
be issued in connection with the stock dividend and we expect to make cash
payments totaling approximately $1,347,000 in lieu of fractional shares.

On January 22, 2003, in conjunction with the BP acquisition, the Company
completed the public offering of 9.9 million shares of Apache common stock,
including 1.3 million shares for the underwriters' over-allotment option, at
$58.10 per share. Net proceeds after placement fees totaled approximately $554
million. The proceeds were used to repay indebtedness under our commercial paper
program and money market lines of credit and to invest in short-term
treasury-only money market funds and treasury notes to hold funds for the BP
acquisition.

ITEM 6.SELECTED FINANCIAL DATA

The following table sets forth selected financial data of the Company and
its consolidated subsidiaries over the five-year period ended December 31, 2002,
which information has been derived from the Company's audited financial
statements. Our financial statements for the years 1998 through 2001 were
audited by Arthur Andersen LLP, independent public accountants. For a discussion
of the risks relating to Arthur Andersen's audit of our financial statements,
please see discussion of risks related to Arthur Andersen in Item 1 of this Form
10-K, "Factors That May Affect Future Results -- Risks Relating to Arthur
Andersen LLP." This

14

information should be read in connection with, and is qualified in its entirety
by, the more detailed information in the Company's financial statements in Item
15 of this Form 10-K.

For a discussion of significant acquisitions, refer to Note 3 to the
Company's consolidated financial statements in Item 15 of this Form 10-K. During
1998, the Company recorded a $243 million pre-tax ($158 million net of tax)
non-cash write-down of the carrying value of the Company's U.S. proved oil and
gas properties in compliance with full-cost accounting rules (refer to Critical
Accounting Policies in Item 7 of this Form 10-K).

ITEM 7.MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

OVERVIEW

In 2002, Apache reported another very satisfactory year of growth and
progress in our mission to build Apache incrementally to last. We finished the
year with strong results, the third-best year on a per-share basis over our
48-year history. Our strong cash flow provided us the flexibility to make
necessary and appropriate investments in continuation of our long-term
incremental growth strategy.

On the back of a strong fourth quarter, we ended the year with a solid $544
million of net income attributable to common stock and $1.4 billion in cash from
operating activities. We exited 2002 with our best quarter of the year and a
strong financial position. Thirteen days into the new year, we announced the
acquisition of $1.3 billion (subject to normal closing adjustments and the
exercise of preferential rights by third parties) in properties from BP p.l.c.
(BP), setting the stage for an exciting 2003.

Facing 2002 with the prospect of continued volatility in commodity prices,
high service costs (including drilling, materials and contracted geophysical
surveys) and unattractive acquisition prices, we exercised patience and
discipline, restricting capital spending and focusing efforts on maintaining our
competitive position by strengthening our balance sheet, growing our reserve
base and maintaining production levels. As the year progressed, improving
commodity prices and declining drilling costs placed us in an ideal position
where we could continue increasing financial flexibility while simultaneously
increasing capital spending, which we did beginning in the third quarter. Our
worldwide capital expenditures for exploratory and development drilling of $860
million were 46 percent higher than our initial plan, but still well below the
$1.3 billion we spent in 2001. Ultimately, this strategy manifested itself in
lower drilling costs, one of the lowest debt-to-capitalization ratios in our
peer group, and our 17th consecutive year of reserve growth, ending

15

with 1.3 billion barrels of oil equivalent. It also left us positioned to
acquire the BP properties in 2003 while maintaining our financial flexibility.

Our capital expenditure reductions in the first half of 2002 were
selective, both by region and by type of drilling. Rather than decrease
exploration drilling, we increased it in the areas of Canada, Egypt, and
Australia, all core producing areas that saw production growth in 2002. We had a
successful exploration drilling program in 2002, reporting 16 discoveries
worldwide. Production remained within one percent of prior-year levels despite
our capital spending curtailment in the first half of the year and back-to-back
hurricanes, which forced us to shut-in all of our Gulf of Mexico production for
a brief period in late September and then again in early October.

The foundation of Apache's strategy is a portfolio approach that was
developed to provide diversity in terms of hydrocarbon product (oil or gas),
geologic risk and geographic location. In 2002, 58 percent of our equivalent
production came from outside the U.S., up from 51 percent in 2001. At year-end
2002, our reserves were 49 percent oil and 51 percent gas, compared with 47
percent and 53 percent at year-end 2001.

In each of our core producing areas, our front line teams have the
technical knowledge, sense of urgency and drive necessary to wring more value
from Apache's assets. Building local expertise also provides a platform to
compete and expand in our core areas through both operations and acquisitions.
In the latter half of 2001, we felt that acquisition prices had reached
exorbitant levels, relative to commodity prices, leading us to the sidelines
until appropriate opportunities arose at reasonable prices, which began late in
2002. We spent approximately $355 million on acquisitions in 2002, compared with
$1.2 billion in 2001 and $1.4 billion in 2000. The most significant of the 2002
activity came in December, when we announced the acquisition of properties in
South Louisiana. As we have done in the past, and what has become a cornerstone
of our acquisition strategy, we entered into hedges to protect the economics of
the transaction, while at the same time preserving the potential for
significantly higher gas realizations. See Note 4, in Item 15 of this Form 10-K.

In January 2003, we announced that we had entered into a definitive
agreement with BP to purchase producing properties in the North Sea and Gulf of
Mexico for $1.3 billion (subject to normal closing adjustments and the exercise
of preferential rights by third parties), the largest single acquisition in
Apache's history. The acquisition from BP is significant in many respects: it
extends our relationship to one of the world's premier integrated major oil
companies; it adds production and reserves and a new exploitation portfolio in
North America's strongest gas market; and it establishes a new core area in the
North Sea, which fits our balanced-portfolio business model and further
diversifies our reserves and production. The Gulf properties are synergistic
with our existing properties and made Apache the fourth-largest producer and the
second-largest acreage holder in Gulf of Mexico waters to 1,200 feet deep. We
will also become the ninth-largest oil producer in the North Sea. The effective
date of the transaction is January 1, 2003; the Gulf portion closed on March 13,
2003; the North Sea portion is projected to close early in the second quarter.
The acquisition is being financed through a combination of internally generated
funds, the issuance in January 2003 of common equity, and debt. A substantial
portion of the oil and gas production for the first two years has been hedged to
protect the acquisition economics and to maintain Apache's position as a
reliable purchaser of major companies' assets as they rationalize their
portfolios in the future.

On January 22, 2003, in conjunction with the BP transaction, we completed a
public offering of 9.9 million shares of common stock, including 1.3 million
shares for the underwriters' over-allotment option, raising net proceeds of $554
million.

After announcing the BP acquisition, all three rating agencies reaffirmed
Apache's single-A credit ratings, a testament to our financial position, our
conservative financial strategy, where we employ hedges to protect acquisition
economics, and our three-pronged approach to finance large-scale transactions
with internally generated funds, equity and debt.

In December 2002, to recognize the Company's continued progress on both the
financial and operational fronts, Apache's board of directors declared a special
five percent common stock dividend payable on April 2,

16

2003, to shareholders of record on March 12, 2003. All of the share and per
share information included in this filing has been adjusted to reflect this
stock dividend.

CRITICAL ACCOUNTING POLICIES

The discussion and analysis of our financial condition and results of
operations are based upon the consolidated financial statements, which have been
prepared in accordance with accounting principles generally accepted in the
United States. The preparation of these financial statements requires us to make
estimates and assumptions that affect the reported amounts of assets,
liabilities, revenues and expenses, and related disclosure of contingent assets
and liabilities. Certain accounting policies involve judgments and uncertainties
to such an extent that there is reasonable likelihood that materially different
amounts could have been reported under different conditions, or if different
assumptions had been used. We evaluate our estimates and assumptions on a
regular basis. We base our estimates on historical experience and various other
assumptions that are believed to be reasonable under the circumstances, the
results of which form the basis for making judgments about the carrying values
of assets and liabilities that are not readily apparent from other sources.
Actual results may differ from these estimates and assumptions used in
preparation of our financial statements. Below, we have provided expanded
discussion of our more significant accounting policies, estimates and judgments.
We discussed the development, selection and disclosure of each of these with our
audit committee. We believe these accounting policies reflect our more
significant estimates and assumptions used in preparation of our financial
statements. Additional accounting policies and estimates made by management are
discussed in Results of Operations and in Note 1 of Item 15 of this Form 10-K.

Full-Cost Method of Accounting for Oil and Gas Operations

The accounting for our business is subject to special accounting rules that
are unique to the oil and gas industry. There are two allowable methods of
accounting for oil and gas business activities: the successful-efforts method
and the full-cost method. There are several significant differences between
these methods. Under the successful-efforts method, cost such as geological and
geophysical (G&G), exploratory dry holes and delay rentals are expensed as
incurred where under the full-cost method these types of charges would be
capitalized to their respective full-cost pool. In the measurement of impairment
of oil and gas properties, the successful-efforts method of accounting follows
the guidance provided in SFAS No. 144, "Accounting for the Impairment or
Disposal of Long-Lived Assets," where the first measurement for impairment is to
compare the net book value of the related asset to its undiscounted future cash
flows using commodity prices consistent with management expectations. Under the
full-cost method the net book value (full-cost pool) is compared to the future
net cash flows discounted at 10 percent using commodity prices in effect at the
end of the reporting period.

We have elected to use the full-cost method to account for our investment
in oil and gas properties. Under this method, the Company capitalizes all
acquisition, exploration and development costs for the purpose of finding oil
and gas reserves, including salaries, benefits and other internal costs directly
attributable to these activities. Although some of these costs will ultimately
result in no additional reserves, we expect the benefits of successful wells to
more than offset the costs of any unsuccessful ones. As a result, we believe
that the full-cost method of accounting better reflects the true economics of
exploring for and developing oil and gas reserves. Our financial position and
results of operations would have been significantly different had we used the
successful-efforts method of accounting for our oil and gas investments.

Reserve Estimates

Our estimate of proved reserves is based on the quantities of oil and gas
which geological and engineering data demonstrate, with reasonable certainty, to
be recoverable in future years from known reservoirs under existing economic and
operating conditions. The accuracy of any reserve estimate is a function of the
quality of available data, engineering and geological interpretation, and
judgment. For example, we must estimate the amount and timing of future
operating costs, severance taxes, development costs, and workover costs, all of
which may in fact vary considerably from actual results. In addition, as prices
and cost levels change from year

17

to year, the estimate of proved reserves also changes. Any significant variance
in these assumptions could materially affect the estimated quantity and value of
our reserves.

Despite the inherent imprecision in these engineering estimates, our
reserves are used throughout our financial statements. For example, since we use
the units-of-production method to amortize our oil and gas properties, the
quantity of reserves could significantly impact our depreciation, depletion and
amortization (DD&A) expense. Our oil and gas properties are also subject to a
"ceiling" limitation based in part on the quantity of our proved reserves.
Finally, these reserves are the basis for our supplemental oil and gas
disclosures.

We engage an independent petroleum engineering firm to review our estimates
of proved hydrocarbon liquid and gas reserves. While this firm doesn't evaluate
our entire reserve base, they do concentrate on those reserves that represent a
substantial percentage of the Securities and Exchange Commission (SEC) value.
During 2002, 2001 and 2000, their review covered 68, 61 and 72 percent of the
SEC value, respectively.

Bad Debt Expense

We routinely assess the recoverability of all material trade and other
receivables to determine their collectibility. Many of our receivables are from
joint interest owners on properties of which we are the operator. Thus, we may
have the ability to withhold future revenue disbursements to recover any
non-payment of joint interest billings. Generally, our crude oil and natural gas
receivables are typically collected within two months. In Egypt, however, we
have experienced a gradual decline in the timeliness of receipts from Egyptian
General Petroleum Corporation (EGPC). Deteriorating economic conditions during
2001 and 2002 in Egypt have lessened the availability of U.S. dollars, resulting
in an additional one to two month delay in receipts from EGPC. Continuation of
the hard currency shortage in Egypt could lead to further delays, deferrals of
payment or non-payment in the future. We accrue a reserve on a receivable when,
based on the judgment of management, it is probable that a receivable will not
be collected and the amount of any reserve may be reasonably estimated.

Asset Retirement Obligation

The Company has significant obligations to remove tangible equipment and
restore land or seabed at the end of oil and gas production operations. Apache's
removal and restoration obligations are primarily associated with plugging and
abandoning wells and removal and disposal of offshore oil and gas platforms. The
estimated undiscounted costs, net of salvage value, of dismantling and removing
these facilities are accrued over the production life of the oil and gas
property. Estimating the future asset removal costs is difficult and requires
management to make estimates and judgments because most of the removal
obligations are many years in the future and contracts and regulations often
have vague descriptions of what constitutes removal. Asset removal technologies
and costs are constantly changing, as well as regulatory, political,
environmental, safety and public relations considerations.

In 2001, the Financial Accounting Standards Board (FASB) issued Statement
of Financial Accounting Standards No. 143 (SFAS No. 143), "Accounting for Asset
Retirement Obligations." SFAS No. 143 significantly changed the method of
accruing for costs associated with the retirement of fixed assets an entity is
legally obligated to incur. Primarily, the new statement requires the Company to
record a separate liability for asset retirement obligations that represents the
present value of the costs to be incurred. The separate liability is similar to
our previous estimates in that the obligations are based on expected cost
estimates and expected economic lives of the asset retirement that occurs many
years in the future, but the new rule now requires additional discounting
assumptions to be considered by management. Revisions to the asset retirement
obligation recorded upon adoption of SFAS No. 143 can potentially result from
changes in the assumptions used to estimate the cash flows required to settle
the obligation. Potential changes include adjustments in estimated
probabilities, amounts, and timing of the settlement, as well as changes in the
legal requirements of an asset retirement obligation. Any such changes that
result in upward and downward revisions in the estimated cash flows will adjust
the liability and the related capitalized asset on a prospective basis. Apache
adopted this statement effective January 1, 2003, as discussed in Note 2 of Item
15 of this Form 10-K.

18

Income Taxes

Oil and gas exploration and production is a global business. As a result,
we are subject to taxation on our income in numerous jurisdictions. We record
deferred tax assets and liabilities to account for the expected future tax
consequences of events that have been recognized in our financial statements and
our tax returns. We routinely assess the realizability of our deferred tax
assets. If we conclude that it is more likely than not that some portion or all
of the deferred tax assets will not be realized under accounting standards, the
tax asset would be reduced by a valuation allowance. We consider future taxable
income in making such assessments. Numerous judgments and assumptions are
inherent in the determination of future taxable income, including factors such
as future operating conditions (particularly as related to prevailing oil and
gas prices).

We intend to permanently reinvest earnings from our international
operations; therefore, we do not recognize deferred taxes on the unremitted
earnings of our international subsidiaries. If it becomes apparent that some or
all of the unremitted earnings will be remitted, we would then reflect taxes on
those earnings.

Derivatives

Apache uses commodity derivative contracts on a limited basis to manage its
exposure to oil and gas price volatility. Apache accounts for its commodity
derivative contracts in accordance with SFAS No. 133, "Accounting for Derivative
Instruments and Hedging Activities" (SFAS 133). Realized gains and losses from
the Company's cash flow hedges, including terminated contracts, are generally
recognized in oil and gas production revenues when the forecasted transaction
occurs. The Company does not enter into derivative or other financial
instruments for trading purposes. SFAS 133 requires that gains and losses from
the change in fair value of derivative instruments that do not qualify for hedge
accounting be reported in current period income, rather than in the period in
which the hedged transaction is settled. This may result in significant
volatility to current period income.

SFAS 133 is complex and subject to a potentially wide range of
interpretations in its application. As such, in 1998 the FASB established the
Derivative Implementation Group (DIG) task force specifically to consider and to
publish official interpretations of issues arising from the implementation of
SFAS 133. The potential exists for additional issues to be brought under review,
therefore, if subsequent interpretations of SFAS 133 are different than our
current policy, it is possible that our policy, as stated above, would be
modified.

RESULTS OF OPERATIONS

Acquisitions and Divestitures

In 2002, we elected to exercise patience on the acquisition front, waiting
for the frenzy that drove acquisition prices to unreasonable levels to ebb. We
focused our attention on managing our financial structure by building equity and
paying down debt so we would be in a position to act quickly when attractive
assets became available at reasonable prices. Our oil and gas acquisitions in
2002 totaled approximately $350 million, adding 49 MMboe to our reserve base,
far short of the $880 million and $1.3 billion we expended during 2001 and 2000,
respectively, which added 213 MMboe and 254 MMboe of proved reserves. In
addition, the acquisitions added $3 million, $146 million and $94 million of
production, processing and transportation facilities in 2002, 2001 and 2000,
respectively, and $197 million of goodwill in 2001. These acquisitions
strengthened our position in core areas and provided promising prospects for
future exploration and development activities. We will continue our strategy of
finding additional reserves on the acquired properties and accelerating the
production of those already identified while endeavoring to lower costs.

In connection with our 2002 South Louisiana acquisition, we entered into
costless-collar hedges to protect Apache from the potential for falling gas
prices and to protect the economics of the transaction. These hedges are
consistent with some of our 2001 and 2000 acquisitions whereby we entered into
and assumed fixed-price commodity swaps and costless-collars that protected
Apache from falling commodity prices. This enabled us to better predict the
financial performance of our acquisitions.

Note that, in light of the uncertainty of how the collapse of Enron Corp.
would impact the derivatives markets, we closed all of our derivatives positions
in October and November 2001, most of which were
19

associated with prior acquisitions, recognizing a net gain of $10 million. A net
gain of $24 million was recognized in 2002 and a $4 million net loss will be
recognized in 2003 as the originally hedged volumes are produced. These, as well
as the unwinding of our gas price swaps associated with advances from gas
purchasers, increased the Company's average natural gas price by $.04 per Mcf
during 2002, $.09 per Mcf during 2001 and $.05 per Mcf during 2000. They
increased our average crude oil price by $.15 per bbl during 2002, and reduced
our average crude oil price by $.42 per bbl during 2001 and $1.62 per bbl during
2000.

We routinely evaluate our property portfolio and divest those that are
marginal or no longer fit into our strategic growth program. We divested $7
million, $348 million and $26 million of properties during 2002, 2001 and 2000,
respectively.

Revenues

Our revenues are sensitive to changes in prices received for our products.
A substantial portion of our production is sold at prevailing market prices,
which fluctuate in response to many factors that are outside of our control.
Imbalances in the supply and demand for oil and natural gas can have dramatic
effects on the prices we receive for our production. Political instability and
availability of alternative fuels could impact worldwide supply, while economic
factors such as the current U.S. recession could impact demand.

20

The table below presents oil and gas production revenues, production and
average prices received from sales of natural gas, oil and natural gas liquids.

Natural Gas Revenues

Consolidated natural gas revenues declined $391 million in 2002, consistent
with an $.83 per Mcf decline in the weighted-average realized price for natural
gas and a four percent decline in production. The price

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decline reduced revenues by $342 million, while lower gas production reduced
revenues by another $49 million. The production decline was concentrated in the
U.S., with declines of 21 percent and 13 percent in the Gulf Coast and Central
regions, respectively. Capital curtailments, property sales in late 2001 and
back-to-back hurricanes in September and October 2002 contributed to the
production decline in the U.S. Collectively, Canada, Egypt, Australia and
Argentina saw a 13 percent increase in natural gas production. Canada's increase
was the result of previous acquisitions and subsequent drilling activity,
coupled with successful results at Ladyfern, which offset natural decline at
Zama. Egypt's increase also came from previous acquisition and subsequent
drilling activity. See Note 3 of Item 15 of this 10-K for further discussion of
acquisition and divestiture activity.

A 36 percent increase in our natural gas production contributed $390
million to 2001 revenues. Canada's increase was primarily driven by our
acquisition of producing properties from Phillips Petroleum Company (Phillips)
in December 2000 and Fletcher Challenge in March 2001 as well as strong
exploration and development results from the Ladyfern area. A full year of
production from the properties we acquired from Occidental Petroleum Corporation
(Occidental) in August 2000 and Collins & Ware, Inc. (Collins & Ware) in June
2000 helped boost our domestic production by 13 percent, while properties
acquired from Repsol helped double our Egyptian production. See Note 3 of Item
15 of this Form 10-K for further discussion of acquisition and divestiture
activity.

We have used long-term, fixed-price physical contracts to lock in a small
portion of our domestic future natural gas production. The contracts provide
protection to the Company in the event of decreasing natural gas prices and
represented approximately 11 percent of our 2002 and 2001 domestic natural gas
production. In 2002, these contracts positively impacted our average realized
price in by $.01 per Mcf. Historically high prices in the first half of 2001
resulted in a negative impact of $.06 per Mcf in that year. Additionally,
substantially all of our natural gas production sold in Australia is subject to
long-term fixed-price contracts.

Crude Oil Revenues

Oil revenues improved $137 million in 2002 with both a higher realized
price and higher production. The weighted-average realized price for oil
improved $1.60 per barrel, adding $86 million to oil revenues, while oil
production gains added another $51 million. The price improvement was
across-the-board, while production gains of 29 percent and 12 percent occurred
in Australia and Egypt, respectively. The Legendre, Simpson and Gibson/South
Plato developments drove Australia's gain, while Egypt's increase was related to
the Repsol acquisition and subsequent drilling. U.S. production declined nine
percent related to natural decline, back-to-back hurricanes in late September
and early October and property sales. See Note 3 of Item 15 of this Form 10-K
for further discussion of acquisition and divestiture activity.

Our crude oil revenues increased in 2001 despite a 15 percent drop in the
average realized price, as crude oil production increased 29 percent. The
acquisition and subsequent exploitation of properties acquired from Repsol, in
March 2001, contributed to a 41 percent increase in our year-over-year Egyptian
production. Strong results on properties acquired from Fletcher Challenge in
March 2001 and Phillips in December 2000 helped us increase our Canadian oil
production by 76 percent. We also had success on the drilling front, increasing
our Australian production by nearly 51 percent with successful development of
the Legendre, Gipsy/North Gipsy and Simpson fields.

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Operating Expenses

The table below presents a detail of our expenses.

Depreciation, Depletion and Amortization

Apache's full-cost DD&A expense is driven by many factors including certain
costs incurred in the exploration, development, and acquisition of producing
reserves, production levels, and estimates of proved reserve quantities and
future developmental costs. During 2002, our full-cost DD&A per boe increased by
$.24 to $6.29, the result of higher finding costs and estimates of future costs
necessary to extract reserves. During 2001, full-cost DD&A expense increased by
$.30 to $6.05 per boe, reflecting higher finding costs and negative reserve
revisions associated with declining prices.

Depreciation on other assets remained flat in 2002 after increasing $25
million in 2001 associated with additional facilities acquired from Fletcher
Challenge and Repsol in March 2001 and the amortization of goodwill. In
connection with the adoption of a new accounting principle effective January 1,
2002, we no longer amortize our goodwill. Instead, it is assessed for periodic
impairment, as discussed in the impairment section below.

Impairments

We periodically assess all of our unproved properties for possible
impairment based on geological trend analysis, dry holes or relinquishment of
acreage. When an impairment occurs, costs associated with these properties are
generally transferred to our proved property base where they become subject to
amortization. In some of our international exploration plays, however, we have
not yet established proved reserves. As such, any impairments in these areas are
immediately charged to earnings. During 2001, we impaired a portion of our
unproved property costs in Poland and China by $65 million ($41 million
after-tax). In 2002, we impaired an additional $20 million in Poland ($12
million after-tax). At December 31, 2002, the Company had $13 million of
unproved property costs remaining in Poland. We are continuing to evaluate our
operations in Poland, which may result in additional impairments in 2003.

As discussed in Note 1 of Item 15 of this Form 10-K, goodwill is subject to
a periodic fair-value-based impairment assessment beginning in 2002. Goodwill
totals $189 million at December 31, 2002 and no impairment was recorded in 2002.

Lease Operating Costs

Lease operating costs (LOE) is generally comprised of several components;
direct operating costs, repair and maintenance costs, workover costs and ad
valorem costs. LOE is driven in part by the type of commodity produced, the
level of workover activity and the geographical location of the properties. Oil
is inherently more expensive to produce than natural gas. Workovers continue to
be an important part of our strategy. They enable us to exploit our existing
reserves by accelerating production and taking advantage of high pricing

23

environments. Repair and maintenance costs are higher on offshore properties and
in areas with plants and facilities.

During 2002, LOE was $3.71 per boe, a $.49 increase from 2001. Higher
absolute costs accounted for 94 percent, $.46 per boe, of this rate increase,
with lower production accounting for the remaining $.03 per boe. We experienced
higher absolute costs in the Gulf Coast region, Egypt and Canada. In the Gulf
Coast region increased repairs and maintenance, related to both routine
operations and hurricane repairs, generally higher costs on properties operated
by others on offshore Gulf of Mexico properties and increased workover activity
in the region, contributed to higher LOE. In Egypt, higher workover activity on
the Khalda, South Umbarka and East Bahariya concessions drove up LOE. In Canada,
the increased costs reflect the impact of the Fletcher, Conoco and Burlington
acquisitions, which carry higher production costs than our other operations, and
increased workover activity, with the heaviest activity at House Mountain,
Hatton, Zama and Simonette fields. In 2001, LOE was $3.22 per boe, a $.56
increase from 2000. This increase was driven by our acquisitions of Canadian and
offshore Gulf of Mexico oil properties, higher service costs and increased
workover activity in the U.S. and Canada.

Gathering and Transportation Costs

During 2002, the Company adopted Emerging Issues Task Force Issue 00-10,
"Accounting for Shipping and Handling Fees and Costs." Prior to adoption,
amounts paid to third parties for transportation had been reported as a
reduction of revenue instead of an increase in operating expenses. Recent
property acquisitions and their associated transportation arrangements have
increased the significance of transportation costs paid to third parties. For
comparative purposes, previously reported transportation costs paid to third
parties were reclassified as corresponding increases to oil and gas production
revenues and operating expenses with no impact on income attributable to common
stock.

Severance and Other Taxes

Severance and other taxes are comprised primarily of severance taxes on
properties onshore and in state or provincial waters in the U.S. and Australia.
Severance taxes, which are generally based on a percentage of oil and gas
production revenues, decreased in 2002. The decrease reflects the impact of
lower gas realizations in the U.S. and a higher percentage of total oil and gas
production revenues generated from Egypt and Canada, core areas that are not
subject to these taxes. Partially offsetting this decrease were higher severance
taxes in Australia. The 2002 increase in Australia resulted from higher oil
realizations and a change in the production mix. A higher portion of production
was attributable to properties in provincial waters, such as Legendre and
Harriet relative to production from federal waters.

In 2001, severance taxes increased in line with our production-driven
increase in oil and gas revenues and a higher effective production tax rate.
Available incentives granted by the state of Oklahoma decline with rising
commodity prices, increasing the effective tax rate. Also contributing to the
2001 increase is additional Canadian Large Corporation Tax, a component of
Severance and Other Taxes, related to production from properties acquired from
Fletcher in March 2001.

General and Administrative Expenses

Overall, general and administrative expenses (G&A) trended higher in 2002,
rising $.13 to $.84 per boe. Thirty-eight percent of the increase is tied to
rising medical costs, a sharp increase in premiums on business insurance
policies renewed subsequent to the September 11, 2001 terrorist attacks and the
addition of a sizeable political risk insurance package added in mid-2001. The
remaining increase is related to non-recurring employee separation costs, a
consequence of our region realignment in the U.S., higher outside legal support
costs related to arbitration proceedings with our gas marketer, Cinergy and
litigation with Predator (see Note 11 of this Form 10-K), costs associated with
the implementation of and compliance with various sections of Sarbanes-Oxley,
and a full year of expense related to additional staff and office costs incurred
with the acquisition of Canadian subsidiaries of Fletcher during 2001.

24

During 2001 absolute G&A increased as the size of our company grew from
acquisitions. However, 2001 G&A on an equivalent-barrel basis declined 10
percent from 2000 to $.71 as the incremental production was added at a lower G&A
rate.

Financing Costs, Net

Net financing costs decreased by five percent in 2002. The major components
of net financing costs are interest expense and capitalized interest. Lower
average debt outstanding during 2002 resulted in a decrease in interest expense
of $23 million. A reduction in capitalized interest of $16 million, associated
with lower unproved property balances, partially offset this decrease. Net
financing costs increased 11 percent in 2001, related to higher average
outstanding borrowings coupled with lower capitalized interest, partially offset
by lower average effective interest rates. Our weighted-average cost of
borrowing on December 31, 2002 was 6.3 percent compared to 5.9 percent on
December 31, 2001. The rate is higher at year-end 2002 as a lower percentage of
our debt is at floating rates, which carry a lower rate than fixed-rate debt.

OIL AND GAS CAPITAL EXPENDITURES

In 2002, Apache added 172.1 MMboe of proved reserves through acquisitions,
drilling and revisions, replacing 138 percent of production.

The preliminary capital expenditure budget for 2003 is approximately $1.3
billion (excluding acquisitions), including $850 million for North America.
Preliminary North American capital expenditures include $350 million in the Gulf
Coast region, $100 million in the Central region and $400 million in Canada. The
Company has estimated its international capital expenditures in 2003 at $400
million. Capital expenditures will be reviewed periodically, and possibly
adjusted throughout the year in light of changing industry conditions.

CASH DIVIDEND PAYMENTS

Apache paid a total of $13 million in dividends during 2002 on its Series B
Preferred Stock issued in August 1998 and its Series C Preferred Stock issued in
May 1999. Dividends on the Series C Preferred Stock were paid through May 15,
2002, when the shares automatically converted to common stock (see Note 9 under
Item 15 of this Form 10-K). Common dividends paid during 2002 rose 61 percent to
$56 million, reflecting the increase in common shares outstanding and the higher
common stock dividend rate. The Company has paid cash dividends on its common
stock for 36 consecutive years through 2002. Future

25

dividend payments will depend on the Company's level of earnings, financial
requirements and other relevant factors.

CAPITAL RESOURCES

Apache's primary needs for cash are for exploration, development and
acquisition of oil and gas properties, repayment of principal and interest on
outstanding debt and payment of dividends. The Company funds its exploration and
development activities primarily through internally generated cash flows and
budgets capital expenditures based on projected cash flows. Apache routinely
adjusts capital expenditures in response to changes in oil and natural gas
prices, drilling and acquisition costs, and cash flow. The Company has
historically utilized net cash provided by operating activities, debt, preferred
interests of subsidiaries and equity as capital resources to obtain necessary
funding for all other cash needs.

Net Cash Provided by Operating Activities

Apache's net cash provided by operating activities during 2002 totaled $1.4
billion, a decrease of 28 percent from 2001 driven by lower oil and gas
production revenues and slightly higher operating expenses. Oil and gas
production revenues fell with a 22 percent decline in gas prices, which was
partially offset by a seven percent improvement in oil prices. The impact of
lower gas production was partially offset by rising oil production. Net cash
provided by operating activities during 2001 increased 26 percent to a record
$1.9 billion from $1.5 billion in 2000. The primary reason for the increase is
attributed to the additional oil and gas revenues from production on properties
acquired during 2000 and 2001.

Debt

At December 31, 2002, Apache had outstanding debt of $280 million under its
commercial paper program and uncommitted lines of credit and a total of $1.9
billion of other debt. This other debt included notes and debentures maturing in
the years 2003 through 2096. Based on our current plan for capital spending and
projections of debt and interest rates, interest payments on the Company's debt
for 2003 are projected to be $157 million (using weighted-average balances for
floating rate obligations).

On June 3, 2002, Apache entered into a new $1.5 billion global credit
facility to replace its existing global and 364-day credit facilities. The new
global credit facility consists of four separate bank facilities: a $750 million
364-day facility in the United States; a $450 million five-year facility in the
United States; a $150 million five-year facility in Australia; and a $150
million five-year facility in Canada. Loans under the global credit facility do
not require the Company to maintain a minimum credit rating.

The five-year facilities are scheduled to mature on June 3, 2007 and the
364-day facility is scheduled to mature on June 1, 2003. The 364-day facility
allows the Company the option to convert outstanding revolving loans at maturity
into one-year term loans. The Company may request extensions of the maturity
dates subject to approval of the lenders.

The Company has a $1.2 billion commercial paper program which enables
Apache to borrow funds for up to 270 days at competitive interest rates. The
commercial paper balances at December 31, 2002 and 2001 were classified as
long-term debt in the accompanying consolidated balance sheet as the Company has
the ability and intent to refinance such amounts on a long-term basis through
either the rollover of commercial paper or available borrowing capacity under
the U.S. five-year facility and the 364-day facility. If the Company is unable
to issue commercial paper following a significant credit downgrade or
dislocation in the market, the Company's U.S. five-year credit facility and
364-day credit facility are available as a 100 percent backstop. The
weighted-average interest rate for commercial paper was 1.85 percent in 2002 and
4.10 percent in 2001.

Preferred Interests of Subsidiaries

During 2001, several of our subsidiaries issued a total of $443 million
($441 million, net of issuance costs) of preferred stock and limited partner
interests to unrelated institutional investors, adding to the Company's
financial liquidity. We pay a weighted-average return to the investors of 123
basis points above the

26

prevailing LIBOR interest rate. These subsidiaries are consolidated in the
accompanying financial statements with the $437 million and $441 million at
December 31, 2002 and 2001, respectively, reflected as preferred interests of
subsidiaries on the balance sheet.

Stock Transactions

In December 2002, our board of directors declared a five percent stock
dividend, payable on April 2, 2003, to shareholders of record on March 12, 2003.
No fractional shares will be issued and cash payments will be made in lieu of
fractional shares. In connection with the declaration of this stock dividend, a
reclassification was made to transfer $396 million from retained earnings to
common stock and additional paid-in-capital in the accompanying consolidated
balance sheet.

On May 15, 2002, we completed the mandatory conversion of our Series C
Preferred Stock into approximately 6.6 million common shares.

In September 2001, our Board of Directors declared a 10 percent stock
dividend, which was paid on January 21, 2002, to shareholders of record on
December 31, 2001. No fractional shares were issued and cash payments were made
in lieu of fractional shares. In connection with the declaration of this stock
dividend, a reclassification was made to transfer $545 million from retained
earnings to common stock and additional paid-in-capital in the accompanying
consolidated balance sheet.

On January 22, 2003, we completed a public offering of approximately 9.9
million shares of common stock, including 1.3 million shares for the
underwriters' over-allotment option, for net proceeds of $554 million.

LIQUIDITY

During 2002, we strengthened our financial flexibility and continued to
build upon the solid financial performances of previous years. We believe that
cash on hand, net cash generated from operating activities, and unused committed
borrowing capacity under our global credit facility will be adequate to satisfy
future financial obligations and liquidity needs.

As of December 31, 2002, available borrowing capacity under our global
credit facility was $1.2 billion. We had $52 million in cash and cash
equivalents on hand at December 31, 2002, an increase from $36 million at the
prior year-end. In addition, the ratio of current assets to current liabilities
increased from 1.34 at the end of last year to 1.44 at December 31, 2002.

In August 2001, we purchased $116 million in U.S. Government Agency Notes
and subsequently sold $13 million of the notes in 2001. Of the remaining
balance, $17 million were designated as "available for sale" securities and were
sold for approximately $17 million in January 2002. The remaining $86 million
were designated as "held to maturity" and carried at amortized cost until they
matured on October 15, 2002. The sales proceeds were used to pay down on our
commercial paper balance.

We have assumed various financial obligations and commitments in the normal
course of operations. These contractual obligations represent known future cash
payments that we are required to make and relate primarily to long-term debt,
preferred interests of subsidiaries, operating leases, pipeline transportation
commitments and international commitments. The Company expects to fund these
contractual obligations with cash generated from operating activities. The
following table summarizes the Company's contractual

27

obligations as of December 31, 2002. Refer to the indicated footnote to the
Company's consolidated financial statements under Item 15 of this Form 10-K for
further information regarding these obligations.

- ---------------

(a) Note that this table does not include the liability for dismantlement,
abandonment and restoration costs of oil and gas properties. The Company
currently includes such costs in the amortizable base of its oil and gas
properties. Effective with adoption of SFAS No. 143, "Accounting for Asset
Retirement Obligations" on January 1, 2003, the Company recorded a separate
liability for the fair value of this asset retirement obligation. See Note
2 under Item 15 of this Form 10-K for further discussion.

Apache is also subject to various contingent obligations that become
payable only if certain events or rulings were to occur. The inherent
uncertainty surrounding the timing of and monetary impact associated with these
events or rulings prevents any meaningful accurate measurement, which is
necessary to assess any impact on future liquidity. Such obligations include
environmental contingencies and potential settlements resulting from litigation.
As discussed in more detail in Footnote 11 under Item 15 of this Form 10-K,
Apache's management feels that it has adequately reserved for its contingent
obligations.

Upon closing of our acquisition of the North Sea properties, Apache will
assume BP's abandonment obligation for those properties and such costs were
considered in determining the purchase price. The purchase of the properties,
however, does not relieve BP of its liabilities if Apache does not satisfy the
abandonment obligation. Although not currently required, to ensure Apache's
payments of these costs, Apache agreed to deliver a letter of credit to BP if
the rating of our senior unsecured debt is lowered by both Moody's and Standard
and Poor's from the Company's current ratings of A3 and A-, respectively. Any
such letter of credit would be in an amount equal to the net present value of
future abandonment costs of the North Sea properties as of the date of any such
ratings change. If Apache is obligated to provide a letter of credit, it will
expire if either rating agency restores its rating to the present level. The
initial letter of credit amount would be $282 million. This amount represents
the letter of credit requirement through March 2004, and will be negotiated
annually based on Apache's future abandonment obligation estimates. In addition,
under Apache's long-term oil physical sales contract with BP, related to the BP
acquisition, Apache may be required to post margin if the mark-to-market
exposure, as defined, exceeds the credit threshold limits.

In addition to the letter of credit requirements covering BP's abandonment
obligations, our liquidity could be further impacted by a downgrade of the
credit rating for our senior unsecured long-term debt by Standard and Poor's to
BBB- or lower and by Moody's to Baa3 or lower; however, we do not believe that
such a sharp downgrade is reasonably likely. If our debt were to receive such a
downgrade, our subsidiaries that issued the preferred interests described in
Note 12 under Item 15 of this Form 10-K could be in violation of their covenants
which may require them to redeem some of the preferred interests as noted. In
addition, generally under our commodity hedge agreements, Apache may be required
to post margin or terminate outstanding positions if the Company's credit
ratings decline significantly.

28

OFF-BALANCE SHEET ARRANGEMENTS

Apache does not currently utilize any off-balance sheet arrangements with
unconsolidated entities to enhance liquidity and capital resource positions, or
any other purpose. Any future transactions involving off-balance sheet
arrangements will be scrutinized and disclosed by the Company's management.

FUTURE TRENDS

Apache's strategy is to increase its oil and gas reserves, production, cash
flow and earnings through a balanced growth program that involves:

- exploiting our existing asset base;

- acquiring properties to which we can add incremental value; and

- investing in high-potential exploration prospects.

Apache's present plans are to increase 2003 worldwide capital expenditures
for exploratory and development drilling to approximately $1.3 billion from $860
million in 2002. We will continue to monitor commodity prices and adjust our
capital expenditures accordingly. We will also continue to evaluate and pursue
acquisition opportunities should they become available at reasonable prices.

Exploiting Existing Asset Base

Apache seeks to maximize the value of our existing asset base by increasing
production and reserves while reducing operating costs per unit. In order to
achieve these objectives, we rigorously pursue production enhancement
opportunities such as workovers, recompletions and moderate-risk drilling, while
divesting marginal and non-strategic properties and identifying other activities
to reduce costs. We expended a lot of effort in 2002 identifying exploitation
opportunities which, when combined with our South Louisiana property purchase
and our acquisition from BP, give us a large inventory at a time of high
commodity prices.

Acquiring Properties to Which We Can Add Incremental Value

Apache seeks to purchase reserves at appropriate prices by generally
avoiding auction processes where we are competing against other buyers. Our aim
is to follow each acquisition with a cycle of reserve enhancement, property
consolidation and cash flow acceleration, facilitating asset growth and debt
reduction. Exorbitant acquisition prices caused Apache to sideline its 2002
acquisition activities early in the year until appropriate opportunities arose
at reasonable prices, which began at the end of the year.

Investing in High-Potential Exploration Prospects

Apache seeks to concentrate its exploratory investments in a select number
of international areas and to become the dominant operator in those regions. We
believe that these investments, although generally higher-risk, offer potential
for attractive investment returns and significant reserve additions. Our
international investments and exploration activities are a significant component
of our long-term growth strategy. They complement our North American operations,
which are more development oriented.

A critical component in implementing our three-pronged growth strategy is
maintenance of significant financial flexibility. All three rating agencies
recently reaffirmed "A-credit ratings" on Apache's senior unsecured long-term
debt, a testament to our conservative financial structure and commitment to
preserving a strong balance sheet while building a solid foundation and
competitive advantage with which to pursue our growth initiatives.

ITEM 7A.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

COMMODITY RISK

The major market risk exposure is in the pricing applicable to our oil and
gas production. Realized pricing is primarily driven by the prevailing worldwide
price for crude oil and spot prices applicable to our United
29

States and Canadian natural gas production. Prices received for oil and gas
production have been and remain volatile and unpredictable. Monthly oil price
realizations ranged from a low of $18.85 per barrel to a high of $28.79 per
barrel during 2002. Average gas price realizations ranged from a monthly low of
$2.11 per Mcf to a monthly high of $3.62 per Mcf during the same period. Based
on the Company's 2002 worldwide oil production levels, a $1.00 per barrel change
in the weighted-average realized price of oil would increase or decrease
revenues by $56 million. Based on the Company's 2002 worldwide gas production
levels, a $.10 per Mcf change in the weighted-average realized price of gas
would increase or decrease revenues by $39 million.

If oil and gas prices decline significantly, even if only for a short
period of time, it is possible that non-cash write-downs of our oil and gas
properties could occur under the full-cost accounting rules of the Securities
Exchange Commission (SEC). Under these rules, we review the carrying value of
our proved oil and gas properties each quarter on a country-by-country basis to
ensure that capitalized costs of proved oil and gas properties, net of
accumulated depreciation, depletion and amortization, and deferred income taxes,
do not exceed the "ceiling." This ceiling is the present value of estimated
future net cash flows from proved oil and gas reserves, discounted at 10
percent, plus the lower of cost or fair value of unproved properties included in
the costs being amortized, net of related tax effects. If capitalized costs
exceed this limit, the excess is charged to additional DD&A expense. The
calculation of estimated future net cash flows is based on the prices for crude
oil and natural gas in effect on the last day of each fiscal quarter except for
volumes sold under long-term contracts. Write-downs required by these rules do
not impact cash flow from operating activities.

While we agree that costs on our balance sheet should be written down if
they exceed the value of our reserves, the valuation methodology currently
prescribed is, in the Company's opinion, flawed. For purposes of the test,
except where there are long-term contracts, the price used to calculate the
present value of reserves is that price in effect on the last day of the
quarter. As earlier indicated, this is a highly volatile price and one that
often has little to do with long-term value. We have pointed this out in
discussions with the SEC and will continue to work to resolve this important
issue.

We periodically enter into hedging activities on a portion of our projected
oil and natural gas production through a variety of financial and physical
arrangements intended to support oil and natural gas prices at targeted levels
and to manage our overall exposure to oil and gas price fluctuations. Apache may
use futures contracts, swaps, options and fixed-price physical contracts to
hedge its commodity prices. Realized gains or losses from the Company's price
risk management activities are recognized in oil and gas production revenues
when the associated production occurs. Apache does not generally hold or issue
derivative instruments for trading purposes. As indicated in Notes 3 and 4 under
Item 15 of this Form 10-K, the Company entered into several derivative positions
in conjunction with the South Louisiana acquisition in December 2002 and
following year-end, with the acquisition from BP. These positions were entered
into to preserve our strong financial position in a period of cyclically high
gas and oil prices and were designated as cash flow hedged at anticipated
production.

At December 31, 2002, the Company had natural gas commodity collars with a
negative fair value of $4 million. A 10 percent increase in gas prices would
change the fair values of the gas collars by $(5) million. A 10 percent decrease
in gas prices would change the fair values of the gas collars by $5 million. The
model used to arrive at the fair values for the commodity collars is based on a
third-party option pricing model. Changes in fair value, assuming 10 percent
price changes, assume non-constant volatility with volatility based on
prevailing market parameters at December 31, 2002. The natural gas and crude oil
fixed-price swaps and crude oil fixed-price physical contracts entered into
during the first quarter 2003 involved substantially more oil and gas volumes
than the 2002 collars. For additional detail on our 2003 derivative positions,
refer to Notes 3 and 4 of Item 15 of this Form 10-K.

We sell all of our Egyptian crude oil and natural gas to the EGPC for U.S.
dollars. Deteriorating economic conditions in Egypt during 2001 and 2002 have
lessened the availability of U.S. dollars resulting in a one to two month delay
in receipts from EGPC. Continuation of the hard currency shortage in Egypt could
lead to further delays, deferrals of payment or non-payment in the future.

30

INTEREST RATE RISK

Approximately 85 percent of the Company's debt is issued at fixed interest
rates, minimizing the Company's exposure to fluctuations in short-term interest
rates. At December 31, 2002, the Company had $317 million of floating-rate debt
and $437 million of preferred interests of subsidiaries, both of which are
subject to fluctuations in short-term interest rates. A 10 percent change in the
floating interest rate (approximately 22 basis points) on these year-end
balances, would be approximately $2 million. The Company did not have any open
derivative contracts relating to interest rates at December 31, 2002 or 2001.

FOREIGN CURRENCY RISK

The Company's cash flow stream relating to certain international operations
is based on the U.S. dollar equivalent of cash flows measured in foreign
currencies. Australian gas production is sold under fixed-price Australian
dollar contracts and over half the costs incurred are paid in Australian
dollars. Revenue and disbursement transactions denominated in Australian dollars
are converted to U.S. dollar equivalents based on the exchange rate as of the
transaction date. Prior to October 1, 2002, reported cash flow from Canadian
operations was measured in Canadian dollars and converted to the U.S. dollar
equivalent based on the average of the Canadian and U.S. dollar exchange rates
for the period reported. The majority of Apache's debt in Canada is denominated
in U.S. dollars and, as such, was adjusted for differences in exchange rates at
each period end. This unrealized adjustment was recorded as other revenues
(losses). In light of the continuing transformation of the U.S. and Canadian
energy markets into a single energy market, we adopted the U.S. dollar as our
functional currency in Canada, effective October 1, 2002. A 10 percent
strengthening of the Australian and Canadian dollar will result in a foreign
currency net loss of approximately $31 million. The Company did not have any
open derivative contracts relating to foreign currencies at December 31, 2002,
or 2001.

FORWARD-LOOKING STATEMENTS AND RISK

Certain statements in this report, including statements of the future
plans, objectives, and expected performance of the Company, are forward-looking
statements that are dependent upon certain events, risks and uncertainties that
may be outside the Company's control, and which could cause actual results to
differ materially from those anticipated. Some of these include, but are not
limited to, the market prices of oil and gas, economic and competitive
conditions, inflation rates, legislative and regulatory changes, financial
market conditions, political and economic uncertainties of foreign governments,
future business decisions and other uncertainties, all of which are difficult to
predict.

There are numerous uncertainties inherent in estimating quantities of
proved oil and gas reserves and in projecting future rates of production and the
timing of development expenditures. The total amount or timing of actual future
production may vary significantly from reserve and production estimates. The
drilling of exploratory wells can involve significant risks, including those
related to timing, success rates and cost overruns. Lease and rig availability,
complex geology and other factors can affect these risks. Although Apache makes
use of futures contracts, swaps, options and fixed-price physical contracts to
mitigate risk, fluctuations in oil and gas prices, or a prolonged continuation
of low prices, may substantially adversely affect the Company's financial
position, results of operations and cash flows.

ITEM 8.FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The financial statements and supplementary financial information required
to be filed under this item are presented on pages F-1 through F-54 of this Form
10-K, and are incorporated herein by reference.

31

ITEM 9.CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL
DISCLOSURE

The financial statements for the fiscal year ended December 31, 2002,
included in this report, have been audited by Ernst & Young LLP, independent
public auditors, as stated in their audit report appearing herein. The financial
statements for the fiscal years ended December 31, 2001, and December 31, 2000,
included in this report, have been audited by Arthur Andersen LLP, independent
public accountants, as stated in their audit report appearing herein. Arthur
Andersen has not consented to the inclusion of their audit report in this
report. For a discussion of the risks relating to Arthur Andersen's audit of our
financial statements, please see "Risks relating to Arthur Andersen LLP" in Item
1.

Arthur Andersen's audit reports on our consolidated financial statements
for each of the fiscal years ended December 31, 2001, and December 31, 2000,
included elsewhere in this report, did not contain an adverse opinion or
disclaimer of opinion, nor were they qualified or modified as to uncertainty,
audit scope or accounting principles.

During the years ended December 31, 2001 and December 31, 2000, and through
the date we dismissed Arthur Andersen LLP, there were no disagreements with
Arthur Andersen on any matter of accounting principle or practice, financial
statement disclosure, or auditing scope or procedure which, if not resolved by
Arthur Andersen's satisfaction, would have caused them to make reference to the
subject matter in connection with their report on our consolidated financial
statements for such years; and there were no reportable events as set forth in
applicable SEC regulations.

We provided Arthur Andersen LLP with a copy of the above disclosures on
April 2, 2002. In a letter dated April 2, 2002, Arthur Andersen confirmed its
agreement with these statements.

PART III

ITEM 10.DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

The information set forth under the captions "Nominees for Election as
Directors", "Continuing Directors", "Executive Officers of the Company", and
"Securities Ownership and Principal Holders" in the proxy statement relating to
the Company's 2003 annual meeting of stockholders (the Proxy Statement) is
incorporated herein by reference.

ITEM 11.EXECUTIVE COMPENSATION

The information set forth under the captions "Summary Compensation Table",
"Option/SAR Exercises and Year-End Value Table", "Employment Contracts and
Termination of Employment and Change-in-Control Arrangements" and "Director
Compensation" in the Proxy Statement is incorporated herein by reference.

ITEM 12.SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The information set forth under the captions "Securities Ownership and
Principal Holders" and "Equity Compensation Plan Information" in the Proxy
Statement is incorporated herein by reference.

ITEM 13.CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

The information set forth under the caption "Certain Business Relationships
and Transactions" in the Proxy Statement is incorporated herein by reference.

ITEM 14.CONTROLS AND PROCEDURES

Apache's certifying officers evaluated the effectiveness of our disclosure
controls and procedures within the last 90 days preceding the date of this
report. Based on that review and as of the date of that evaluation, these
officers found the company's disclosure controls to be adequate, providing
effective means to insure that

32

we timely and accurately disclose the information we are required to disclose
under applicable laws and regulations. We also made no significant changes in
internal controls or any other factors that could affect our internal controls
since our most recent internal controls evaluation.

We periodically review the design and effectiveness of our disclosure
controls, including compliance with various laws and regulations that apply to
our operations both inside and outside the United States. We make modifications
to improve the design and effectiveness of our disclosure controls, and may take
other corrective action, if our reviews identify deficiencies or weaknesses in
our controls.

PART IV

ITEM 15.EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

(a) Documents included in this report:

1. Financial Statements

Report of management........................................ F-1
Report of Independent Auditors.............................. F-2
Reports of independent public accountants................... F-3
Statement of consolidated operations for each of the three
years in the period ended December 31, 2002............... F-4
Statement of consolidated cash flows for each of the three
years in the period ended December 31, 2002............... F-5
Consolidated balance sheet as of December 31, 2002 and
2001...................................................... F-6
Statement of consolidated shareholders' equity for each of
the three years in the period ended December 31, 2002..... F-7
Notes to consolidated financial statements.................. F-8

2. Financial Statement Schedules

Financial statement schedules have been omitted because they are either
not required, not applicable or the information required to be presented
is included in the Company's financial statements and related notes.

3. Exhibits

- ---------------

* Filed herewith.

+ Management contracts or compensatory plans or arrangements required to be
filed herewith pursuant to Item 15 hereof.

NOTE: Debt instruments of the Registrant defining the rights of long-term
debt holders in principal amounts not exceeding 10 percent of the Registrant's
consolidated assets have been omitted and will be provided to the Commission
upon request.

(b) Reports on Form 8-K

There were no current reports on Form 8-K filed by Apache during the fiscal
quarter ended December 31, 2002.

38

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

APACHE CORPORATION

/s/ G. STEVEN FARRIS
--------------------------------------
G. Steven Farris
President, Chief Executive Officer and
Chief Operating Officer

Dated: March 21, 2003

POWER OF ATTORNEY

The officers and directors of Apache Corporation, whose signatures appear
below, hereby constitute and appoint G. Steven Farris, Roger B. Plank, P.
Anthony Lannie and Eric L. Harry each of them (with full power to each of them
to act alone), the true and lawful attorney-in-fact to sign and execute, on
behalf of the undersigned, any amendment(s) to this report and each of the
undersigned does hereby ratify and confirm all that said attorneys shall do or
cause to be done by virtue thereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.

CERTIFICATIONS

I, Roger B. Plank, certify that:

1. I have reviewed this annual report on Form 10-K of Apache Corporation;

2. Based on my knowledge, this annual report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this annual
report;

3. Based on my knowledge, the financial statements, and other financial
information included in this annual report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this annual report;

4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

(a) designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities,
particularly during the period in which this annual report is being
prepared;

(b) evaluated the effectiveness of the registrant's disclosure
controls and procedures as of a date within 90 days prior to the filing
date of this annual report (the "Evaluation Date"); and

(c) presented in this annual report our conclusions about the
effectiveness of the disclosure controls and procedures based on our
evaluation as of the Evaluation Date;

5. The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of registrant's board of directors (or persons performing the
equivalent function):

(a) all significant deficiencies in the design or operation of
internal controls which could adversely affect the registrant's ability to
record, process, summarize and report financial data and have identified
for the registrant's auditors any material weaknesses in internal controls;
and

(b) any fraud, whether or not material, that involves management or
other employees who have a significant role in the registrant's internal
controls; and

6. The registrant's other certifying officers and I have indicated in this
annual report whether or not there were significant changes in internal controls
or in other factors that could significantly affect internal controls subsequent
to the date of our most recent evaluation, including any corrective actions with
regard to significant deficiencies and material weaknesses.

/s/ ROGER B. PLANK
--------------------------------------
Roger B. Plank
Executive Vice President and
Chief Financial Officer

Date: March 14, 2003

CERTIFICATIONS

I, G. Steven Farris, certify that:

1. I have reviewed this annual report on Form 10-K of Apache Corporation;

2. Based on my knowledge, this annual report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements made, in light of the circumstances under which such statements
were made, not misleading with respect to the period covered by this annual
report;

3. Based on my knowledge, the financial statements, and other financial
information included in this annual report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this annual report;

4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

(a) designed such disclosure controls and procedures to ensure that
material information relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities,
particularly during the period in which this annual report is being
prepared;

(b) evaluated the effectiveness of the registrant's disclosure
controls and procedures as of a date within 90 days prior to the filing
date of this annual report (the "Evaluation Date"); and

(c) presented in this annual report our conclusions about the
effectiveness of the disclosure controls and procedures based on our
evaluation as of the Evaluation Date;

5. The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of registrant's board of directors (or persons performing the
equivalent function):

(a) all significant deficiencies in the design or operation of
internal controls which could adversely affect the registrant's ability to
record, process, summarize and report financial data and have identified
for the registrant's auditors any material weaknesses in internal controls;
and

(b) any fraud, whether or not material, that involves management or
other employees who have a significant role in the registrant's internal
controls; and

6. The registrant's other certifying officers and I have indicated in this
annual report whether or not there were significant changes in internal controls
or in other factors that could significantly affect internal controls subsequent
to the date of our most recent evaluation, including any corrective actions with
regard to significant deficiencies and material weaknesses.

/s/ G. STEVEN FARRIS
--------------------------------------
G. Steven Farris
President, Chief Executive Officer and
Chief Operating Officer

Date: March 14, 2003

REPORT OF MANAGEMENT

The financial statements and related financial information of Apache
Corporation and subsidiaries were prepared by and are the responsibility of
management. The statements have been prepared in conformity with accounting
principles generally accepted in the United States and include amounts that are
based on management's best estimates and judgments.

Management maintains and places reliance on systems of internal control
designed to provide reasonable assurance, weighing the costs with the benefits
sought, that all transactions are properly recorded in the Company's books and
records, that policies and procedures are adhered to, and that assets are
safeguarded. The systems of internal controls are supported by written policies
and guidelines, internal audits and the selection and training of qualified
personnel.

The consolidated financial statements of Apache Corporation and
subsidiaries have been audited by the independent auditors, Ernst & Young LLP
for 2002 and Arthur Andersen LLP for 2001 and 2000. Their audits included
developing an overall understanding of the Company's accounting systems,
procedures and internal controls and conducting tests and other auditing
procedures sufficient to support their opinion on the fairness of the
consolidated financial statements.

The Apache Corporation Board of Directors exercises its oversight
responsibility for the financial statements through its Audit Committee,
composed solely of outside directors who are not current employees of Apache or
who have not been employees of Apache within the past ten years. The Audit
Committee meets periodically with management, internal auditors and the
independent auditors to ensure that they are successfully completing designated
responsibilities. The internal auditors and independent auditors have open
access to the Audit Committee to discuss auditing and financial reporting
issues.

G. Steven Farris
President, Chief Executive Officer
and Chief Operating Officer

Roger B. Plank
Executive Vice President and Chief
Financial Officer

Thomas L. Mitchell
Vice President and Controller
(Chief Accounting Officer)

Houston, Texas
March 14, 2003

F-1

REPORT OF INDEPENDENT AUDITORS

To the Shareholders of Apache Corporation:

We have audited the accompanying consolidated balance sheet of Apache
Corporation (a Delaware corporation) and subsidiaries as of December 31, 2002
and the related consolidated statements of operations, shareholders' equity, and
cash flows for the year then ended. These financial statements are the
responsibility of the Company's management. Our responsibility is to express an
opinion on these financial statements based on our audit. The financial
statements of Apache Corporation as of December 31, 2001, and for each of the
two years in the period then ended, were audited by other auditors who have
ceased operations and whose report dated March 12, 2002 expressed an unqualified
opinion on those financial statements before the adjustments described in Note
1. Their report, however, had an explanatory paragraph indicating that the
Company, as described in Note 1 to the consolidated financial statements,
changed its method of accounting for crude oil inventories effective January 1,
2000, and as discussed in Notes 1 and 4 to the consolidated financial statements
changed its method of accounting for derivative instruments effective January 1,
2001.

We conducted our audit in accordance with auditing standards generally
accepted in the United States. Those standards require that we plan and perform
the audit to obtain reasonable assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. An
audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audit provides a reasonable basis
for our opinion.

In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Apache
Corporation and subsidiaries as of December 31, 2002 and the results of their
operations and their cash flows for the year then ended in conformity with
accounting principles generally accepted in the United States.

As discussed above, the financial statements of Apache Corporation as of
December 31, 2001, and for each of the two years in the period then ended, were
audited by other auditors who have ceased operations. As described in Note 1,
these financial statements have been revised to reflect third party gathering
and transportation costs as an operating cost instead of a reduction of revenues
as previously reported. We audited the adjustments described in Note 1 that were
applied to revise the 2001 and 2000 consolidated statement of operations. As
described in Note 1, in 2002 the Company's Board of Directors approved a five
percent stock dividend, and all references to number of shares and per share
information in the financial statements have been adjusted to reflect the stock
dividend on a retroactive basis. We audited the adjustments that were applied to
restate the number of shares and per share information reflected in the 2002
financial statements. Our procedures included (a) agreeing the authorization for
the five percent stock dividend to the Company's underlying records obtained
from management, and (b) testing the mathematical accuracy of the restated
number of shares, basic and diluted earnings per share. In our opinion, such
adjustments are appropriate and have been properly applied. However, we were not
engaged to audit, review, or apply any procedures to the 2001 and 2000 financial
statements of Apache Corporation other than with respect to such adjustments
and, accordingly, we do not express an opinion or any other form of assurance on
the 2001 and 2000 financial statements taken as a whole.

ERNST & YOUNG LLP

Houston, Texas
March 14, 2003

F-2

REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Shareholders of Apache Corporation:

We have audited the accompanying consolidated balance sheet of Apache
Corporation (a Delaware corporation) and subsidiaries as of December 31, 2001
and 2000, and the related consolidated statements of operations, shareholders'
equity, and cash flows for each of the three years in the period ended December
31, 2001. These financial statements are the responsibility of the Company's
management. Our responsibility is to express an opinion on these financial
statements based on our audits.

We conducted our audits in accordance with auditing standards generally
accepted in the United States. Those standards require that we plan and perform
the audit to obtain reasonable assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. An
audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.

In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Apache
Corporation and subsidiaries as of December 31, 2001 and 2000, and the results
of their operations and their cash flows for each of the three years in the
period ended December 31, 2001 in conformity with accounting principles
generally accepted in the United States.

As discussed in Note 1 to the consolidated financial statements, effective
January 1, 2000, the Company changed its method of accounting for crude oil
inventories. In addition, as discussed in Notes 1 and 4 to the consolidated
financial statements, effective January 1, 2001, the Company changed its method
of accounting for derivative instruments.

ARTHUR ANDERSEN LLP

Houston, Texas
March 12, 2002

THIS IS A COPY OF AN ACCOUNTANTS' REPORT PREVIOUSLY ISSUED BY ARTHUR ANDERSEN
LLP, AND HAS NOT BEEN REISSUED BY ARTHUR ANDERSEN. SEE ITEM 9 OF THIS FORM 10-K
FOR FURTHER INFORMATION.
F-3

APACHE CORPORATION AND SUBSIDIARIES

STATEMENT OF CONSOLIDATED OPERATIONS

The accompanying notes to consolidated financial statements are an integral part
of this statement.
F-4

APACHE CORPORATION AND SUBSIDIARIES

STATEMENT OF CONSOLIDATED CASH FLOWS

The accompanying notes to consolidated financial statements are an integral part
of this statement.
F-5

APACHE CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEET

The accompanying notes to consolidated financial statements are an integral part
of this statement.
F-6

APACHE CORPORATION AND SUBSIDIARIES

STATEMENT OF CONSOLIDATED SHAREHOLDERS' EQUITY

The accompanying notes to consolidated financial statements are an integral part
of this statement.

F-7

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Nature of Operations -- Apache Corporation (Apache or the Company) is an
independent energy company that explores for, develops and produces natural gas,
crude oil and natural gas liquids. The Company's North American exploration and
production activities are divided into two U.S. operating regions (Central and
Gulf Coast) and a Canadian region. Approximately 78 percent of the Company's
proved reserves are located in North America. Internationally, Apache has
exploration and production interests in Egypt, offshore Western Australia and in
Argentina, a development project underway offshore The People's Republic of
China (China) that is expected to commence production in 2003 and exploration
interests in Poland.

The Company's future financial condition and results of operations will
depend upon prices received for its oil and natural gas production and the costs
of finding, acquiring, developing and producing reserves. A substantial portion
of the Company's production is sold under market-sensitive contracts. Prices for
oil and natural gas are subject to fluctuations in response to changes in
supply, market uncertainty and a variety of other factors beyond the Company's
control. These factors include worldwide political instability (especially in
the Middle East), the foreign supply of oil and natural gas, the price of
foreign imports, the level of consumer demand, and the price and availability of
alternative fuels.

Stock Dividends -- On September 13, 2001, the Company's Board of Directors
declared a 10 percent stock dividend payable on January 21, 2002 to shareholders
of record on December 31, 2001. As a result, the Company reclassified
approximately $545 million from retained earnings to common stock and paid-in
capital, which represents the fair market value at the date of declaration of
the shares distributed. No fractional shares were issued and cash payments
totaling $891,000 were made in lieu of fractional shares.

On December 18, 2002, the Company's Board of Directors declared a five
percent stock dividend payable on April 2, 2003 to shareholders of record on
March 12, 2003. As a result, in December 2002, the Company reclassified
approximately $396 million from retained earnings to common stock and paid-in
capital, which represents the fair market value at the date of declaration of
the shares distributed. No fractional shares will be issued and cash payments
will be made in lieu of fractional shares.

All share and per share information in these financial statements and notes
thereto have been restated to reflect both the 10 percent and five percent stock
dividends.

Principles of Consolidation -- The accompanying consolidated financial
statements include the accounts of Apache and its subsidiaries after elimination
of intercompany balances and transactions. The Company's interests in oil and
gas exploration and production ventures and partnerships are proportionately
consolidated.

Cash Equivalents -- The Company considers all highly liquid debt
instruments purchased with an original maturity of three months or less to be
cash equivalents. These investments are carried at cost, which approximates fair
value.

Allowance for Doubtful Accounts -- The Company routinely assesses the
recoverability of all material trade and other receivables to determine their
collectibility. Many of Apache's receivables are from joint interest owners on
properties of which the Company is the operator. Thus, Apache may have the
ability to withhold future revenue disbursements to recover any non-payment of
joint interest billings. Generally, the Company's crude oil and natural gas
receivables are typically collected within two months. In Egypt, however, the
Company has experienced a gradual decline in the timeliness of receipts from the
Egyptian General Petroleum Corporation (EGPC). Deteriorating economic conditions
during 2001 and 2002 in Egypt have lessened the availability of U.S. dollars,
resulting in an additional one to two month delay in receipts from EGPC.
Continuation of the hard currency shortage in Egypt could lead to further
delays, deferrals of payment or non-payment in the future. The Company accrues a
reserve on a receivable when, based on the judgment of management, it is
probable that a receivable will not be collected and the amount of any reserve
may be

F-8

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

reasonably estimated. As of December 31, 2002 and 2001, the Company had an
allowance for doubtful accounts of $31 million and $24 million, respectively.

Marketable Securities -- The Company accounts for investments in debt and
equity securities in accordance with Statement of Financial Accounting Standards
(SFAS) No. 115, "Accounting for Certain Investments in Debt and Equity
Securities." Investments in debt securities classified as "held to maturity" are
recorded at amortized cost. Investments in debt and equity securities classified
as "available for sale" are recorded at fair value with unrealized gains and
losses recognized in other comprehensive income, net of income taxes. The
Company utilizes the average-cost method in computing realized gains and losses,
which are included in other revenues in the consolidated statements of
operations.

Inventories -- Inventories consist principally of tubular goods and
production equipment, stated at the lower of weighted-average cost or market,
and oil produced but not sold, stated at the lower of cost (a combination of
production costs and depreciation, depletion and amortization (DD&A) expense) or
market.

Property and Equipment -- The Company uses the full-cost method of
accounting for its investment in oil and gas properties. Under this method, the
Company capitalizes all acquisition, exploration and development costs incurred
for the purpose of finding oil and gas reserves, including salaries, benefits
and other internal costs directly attributable to these activities. Exclusive of
field-level costs, Apache capitalized $22 million, $20 million and $23 million
of these internal costs in 2002, 2001 and 2000, respectively. Costs associated
with production and general corporate activities, however, are expensed in the
period incurred. Interest costs related to unproved properties and properties
under development are also capitalized to oil and gas properties. Unless a
significant portion of the Company's proved reserve quantities in a particular
country are sold (greater than 25 percent), proceeds from the sale of oil and
gas properties are accounted for as a reduction to capitalized costs, and gains
and losses are not recognized.

Apache computes the DD&A of oil and gas properties on a quarterly basis
using the unit-of-production method based upon production and estimates of
proved reserve quantities. Unproved properties are excluded from the amortizable
base until evaluated. Future development costs and dismantlement, restoration
and abandonment costs, net of estimated salvage values, are added to the
amortizable base. These future costs are generally estimated by engineers
employed by Apache. Beginning in 2003, Apache changed its method of accounting
for dismantlement, restoration and abandonment costs as described in Note 2.

Apache limits, on a country-by-country basis, the capitalized costs of
proved oil and gas properties, net of accumulated DD&A and deferred income
taxes, to the estimated future net cash flows from proved oil and gas reserves
discounted at 10 percent, net of related tax effects, plus the lower of cost or
fair value of unproved properties included in the costs being amortized. If
capitalized costs exceed this limit, the excess is charged to additional DD&A
expense. Included in the estimated future net cash flows are Canadian provincial
tax credits expected to be realized beyond the date at which the legislation,
under its provisions, could be repealed. To date, the Canadian provincial
governments have not indicated an intention to repeal this legislation.

Given the volatility of oil and gas prices, it is reasonably possible that
the Company's estimate of discounted future net cash flows from proved oil and
gas reserves could change in the near term. If oil and gas prices decline
significantly, even if only for a short period of time, it is possible that
write-downs of oil and gas properties could occur.

While Apache agrees that costs on its balance sheet should be written down
if they exceed the value of its reserves, the valuation methodology currently
prescribed is, in the Company's opinion, flawed. For purposes of the test,
except where there are long-term contracts, the price used to calculate the
present value of reserves is that price in effect on the last day of the
quarter. This is a highly volatile price and one that often has little to do
with long-term value. The Company has pointed this out in discussions with the
Securities and Exchange Commission (SEC) and will continue to work to resolve
this important issue.

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APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Significant unproved properties are periodically assessed for possible
impairments or reductions in value. If a reduction in value has occurred, the
impairment is transferred to proved properties. Unproved properties that are
individually insignificant are generally amortized over an average holding
period. For international operations where a reserve base has not yet been
established, the impairment is charged to earnings. During 2002, the Company
recorded approximately $20 million ($12 million after tax) in impairments of
unproved property costs in Poland. The Company will continue to evaluate its
operations in Poland, which may result in additional impairments in 2003. During
2001, the Company recorded a $65 million ($41 million after tax) impairment of
unproved property costs in China and Poland.

Buildings, equipment and gas gathering, transmission and processing
facilities are depreciated on a straight-line basis over the estimated useful
lives of the assets, which range from three to 20 years. Accumulated
depreciation for these assets totaled $240 million and $182 million at December
31, 2002 and 2001, respectively.

Goodwill -- The Company adopted SFAS No. 142 "Goodwill and Other Intangible
Assets" effective January 1, 2002. SFAS No. 142 addresses financial accounting
and reporting for acquired goodwill and other intangible assets and supersedes
Accounting Principles Board (APB) Opinion No. 17 "Intangible Assets." As a
result of this pronouncement, goodwill is no longer subject to amortization.
Rather, goodwill is subject to at least an annual assessment for impairment by
applying a fair-value-based test. Goodwill totaled $189 million at December 31,
2002, representing the excess of the purchase price over the estimated fair
value of the assets acquired and liabilities assumed in the Fletcher Challenge
Energy (Fletcher) and Repsol YPF (Repsol) acquisitions, adjusted for currency
fluctuations. Apache has recognized no impairment of goodwill as of December 31,
2002. Had the principles of SFAS No. 142 been applied to prior years, goodwill
amortization of $7 million ($4 million after tax) expensed during 2001 would not
have been incurred. Income attributable to common stock for the comparative
period, adjusted to exclude the effect of goodwill amortization, would have
increased diluted earnings per share by $.03.

Accounts Payable -- Included in accounts payable at both December 31, 2002
and 2001, are liabilities of approximately $37 million representing the amount
by which checks issued, but not presented to the Company's banks for collection,
exceeded balances in applicable bank accounts.

Revenue Recognition -- Apache uses the sales method of accounting for
natural gas revenues. Under this method, revenues are recognized based on actual
volumes of gas sold to purchasers. The volumes of gas sold may differ from the
volumes to which Apache is entitled based on its interests in the properties.
These differences create imbalances that are recognized as a liability only when
the estimated remaining reserves will not be sufficient to enable the
underproduced owner to recoup its entitled share through production. In both
years ended December 31, 2002 and 2001, the Company recorded liabilities of $4
million for gas imbalances, which are reflected in other non-current
liabilities. No receivables are recorded for those wells where Apache has taken
less than its share of production. Gas imbalances are reflected as adjustments
to proved gas reserves and future cash flows in the unaudited supplemental oil
and gas disclosures. Adjustments for gas imbalances totaled less than one
percent of Apache's proved gas reserves at December 31, 2002, 2001 and 2000.

The Company's Egyptian operations are conducted pursuant to production
sharing contracts under which contractor partners pay all operating and capital
costs for exploring and developing the concessions. A percentage of the
production, usually up to 40 percent, is available to the contractor partners to
recover all operating and capital costs. The balance of the production is split
among the contractor partners and EGPC on a contractually defined basis.

Derivative Instruments and Hedging Activities -- Apache periodically enters
into commodity derivative contracts to manage its exposure to oil and gas price
volatility. Commodity derivative contracts, which are usually placed with major
financial institutions that the Company believes are minimal credit risks, may
take the form of futures contracts, swaps or options. The oil and gas reference
prices upon which these commodity

F-10

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

derivative contracts are based, reflect various market indices that have a high
degree of historical correlation with actual prices received by the Company for
its oil and gas production.

Effective January 1, 2001, Apache adopted SFAS No. 133, "Accounting for
Derivative Instruments and Hedging Activities," as amended. SFAS No. 133, as
amended, establishes accounting and reporting standards requiring that all
derivative instruments be recorded in the balance sheet as either an asset or
liability measured at fair value (which is generally based on information
obtained from independent parties) and requires that changes in fair value be
recognized currently in earnings unless specific hedge accounting criteria are
met. Hedge accounting treatment allows unrealized gains and losses on cash flow
hedges to be deferred in other comprehensive income. Realized gains and losses
from the Company's cash flow hedges, including terminated contracts, are
generally recognized in oil and gas production revenues when the forecasted
transaction occurs. If at any time the likelihood of occurrence of a hedged
forecasted transaction ceases to be "probable," hedge accounting under SFAS No.
133 will cease on a prospective basis and all future changes in the fair value
of the derivative will be recognized directly in earnings. Amounts recorded in
other comprehensive income prior to the change in the likelihood of occurrence
of the forecasted transaction will remain in other comprehensive income until
such time the forecasted transaction impacts earnings. If it becomes probable
that the original forecasted production will not occur, then the derivative gain
or loss would be reclassified from accumulated other comprehensive income into
earnings immediately. Hedge effectiveness is measured at least quarterly based
on the relative changes in fair value between the derivative contract and the
hedged item over time and any ineffectiveness is immediately reported in other
revenue (losses) in the statement of consolidated operations.

Upon adoption, Apache formally documented and designated all hedging
relationships and verified that its hedging instruments were effective in
offsetting changes in actual prices received by the Company. Prior to the
adoption of SFAS No. 133, as amended, derivative instruments were not reflected
as derivative assets and liabilities and, therefore, had no carrying value.
Derivative instruments documented and treated as normal purchases or sales will
continue to be recorded and recognized in income using accrual accounting.

Income Taxes -- Oil and gas exploration and production is a global
business. As a result, Apache is subject to taxation on our income in numerous
jurisdictions. The Company records deferred tax assets and liabilities to
account for the expected future tax consequences of events that have been
recognized in its financial statements and tax returns. Apache routinely
assesses the realizability of its deferred tax assets. If the Company concludes
that it is more likely than not that some portion or all of the deferred tax
assets will not be realized under accounting standards, the tax asset would be
reduced by a valuation allowance. The Company considers future taxable income in
making such assessments. Numerous judgments and assumptions are inherent in the
determination of future taxable income, including factors such as future
operating conditions (particularly as related to prevailing oil and gas prices).

Earnings from Apache's international operations are permanently reinvested;
therefore, the Company does not recognize deferred taxes on the unremitted
earnings of its international subsidiaries. If it becomes apparent that some or
all of the unremitted earnings will be remitted, the Company would then reflect
taxes on those earnings.

Foreign Currency Translation -- The U.S. dollar is considered the
functional currency for each of Apache's international operations. In light of
the continuing transformation of the U.S. and Canadian energy markets into a
single energy market, the Company adopted the U.S. dollar as the functional
currency in Canada, effective October 1, 2002. Prior to this, the Canadian
subsidiaries' functional currency was the Canadian dollar. Translation
adjustments resulting from translating the Canadian subsidiaries' foreign
currency financial statements into U.S. dollar equivalents were reported
separately and accumulated in other comprehensive income. Some of the Company's
Canadian subsidiaries had intercompany debt denominated in U.S. dollars. Prior
to conversion, these transactions were long-term investments, and therefore,
foreign currency gains and losses were recognized in other comprehensive income.
Transaction gains and losses are
F-11

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

recognized in other revenues (losses). Currency translation adjustments held in
other comprehensive income on the balance sheet will remain there indefinitely
unless there is a substantially complete liquidation of the Company's Canadian
operations.

Net Income Per Common Share -- Basic net income per common share is
computed by dividing income attributable to common stock by the weighted-average
number of common shares outstanding during the period. Diluted net income per
common share reflects the potential dilution that could occur if the Company's
dilutive outstanding stock options were exercised using the average common stock
price for the period and if the Company's 6.5% Automatically Convertible Equity
Securities, Conversion Preferred Stock, Series C (Series C Preferred Stock) was
converted to common stock using the conversion rate in effect during the period.
The Series C Preferred Stock converted to Apache common stock on May 15, 2002.
These potentially dilutive securities are excluded from the computation of
dilutive earnings per share when their effect is antidilutive. Contingently
issuable shares under the 2000 Share Appreciation Plan (Share Appreciation Plan)
will be excluded from the calculation of income per common share until the
stated goals are met (see Note 9).

Stock-Based Compensation -- At December 31, 2002, the Company had several
stock-based employee compensation plans, which are defined and described more
fully in Note 9. The Company accounts for those plans under the recognition and
measurement principles of APB Opinion No. 25, "Accounting for Stock Issued to
Employees," and related interpretations. Under this method, the Company records
no compensation expense for stock options granted when the exercise price of
those options is equal to or greater than the market price of the Company's
common stock on the date of grant, unless the awards are subsequently modified.
The following table illustrates the effect on income attributable to common
stock and earnings per share if the Company had applied the fair value
recognition provisions of SFAS No. 123, "Accounting for Stock-Based
Compensation," as amended, to stock-based employee compensation for the Stock
Option Plans, the Performance Plan, and the Share Appreciation Plan.

The effects of applying SFAS No. 123, as amended, in this pro forma
disclosure should not be interpreted as being indicative of future effects. SFAS
No. 123, as amended, does not apply to awards prior to 1995, and the extent and
timing of additional future awards cannot be predicted.

Use of Estimates -- The preparation of financial statements in conformity
with accounting principles generally accepted in the U.S. requires management to
make estimates and assumptions that affect the reported amounts of assets and
liabilities and related disclosure of contingent assets and liabilities at the
date

F-12

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

of the financial statements and the reported amounts of revenues and expenses
during the reporting period. Certain accounting policies involve judgments and
uncertainties to such an extent that there is reasonable likelihood that
materially different amounts could have been reported under different
conditions, or if different assumptions had been used. Apache evaluates its
estimates and assumptions on a regular basis. The Company bases its estimates on
historical experience and various other assumptions that are believed to be
reasonable under the circumstances, the results of which form the basis for
making judgments about carrying values of assets and liabilities that are not
readily apparent from other sources. Actual results may differ from these
estimates and assumptions used in preparation of its financial statements.
Significant estimates with regard to these financial statements include the
estimate of proved oil and gas reserve quantities and the related present value
of estimated future net cash flows therefrom (see Note 15).

Treasury Stock -- The Company follows the weighted-average-cost method of
accounting for treasury stock transactions.

Change in Accounting Principle -- In December 2000, the staff of the
Securities and Exchange Commission (SEC) announced that commodity inventories
should be carried at cost, not market value. As a result, Apache changed its
accounting for crude oil inventories in the fourth quarter of 2000, retroactive
to the beginning of the year, and recognized a non-cash cumulative-effect charge
to earnings effective January 1, 2000 of $8 million, net of income tax, to value
crude oil inventory at cost.

Reclassifications -- To comply with the consensus reached on Emerging
Issues Task Force Issue 00-10, "Accounting for Shipping and Handling Fees and
Costs," third party gathering and transportation costs have been reported as an
operating cost instead of a reduction of revenues as previously reported.
Reclassifications have been made to reflect this change in prior period
statements of consolidated operations.

2. NEW ACCOUNTING PRONOUNCEMENTS

In 2001, the Financial Accounting Standards Board (FASB) issued SFAS No.
143, "Accounting for Asset Retirement Obligations." SFAS No. 143 addresses
financial accounting and reporting for obligations associated with the
retirement of tangible long-lived assets and the associated asset retirement
costs. This statement requires companies to record the present value of
obligations associated with the retirement of tangible long-lived assets in the
period in which it is incurred. The liability is capitalized as part of the
related long-lived asset's carrying amount. Over time, accretion of the
liability is recognized as an operating expense and the capitalized cost is
depreciated over the expected useful life of the related asset. The Company's
asset retirement obligations relate primarily to the plugging dismantlement,
removal, site reclamation and similar activities of its oil and gas properties.
Prior to adoption of this statement, such obligations were accrued ratably over
the productive lives of the assets through its depreciation, depletion and
amortization for oil and gas properties without recording a separate liability
for such amounts.

Effective January 1, 2003, the Company adopted SFAS No. 143 which will
result in an increase to net oil and gas properties of $410 million and
additional liabilities related to asset retirement obligations of $369 million.
These entries reflect the asset retirement obligation of Apache had the
provisions of SFAS No. 143 been applied since inception. This will result in a
non-cash cumulative-effect increase to earnings of $27 million ($41 million
pretax).

In November 2002, the FASB issued Interpretation No. 45 "Guarantor's
Accounting and Disclosure Requirements for Guarantees, Including Indirect
Guarantees of Indebtedness of Others." This Interpretation elaborates on the
disclosures to be made by a guarantor in its interim and annual financial
statements about its obligations under certain guarantees that it has issued. It
also clarifies that a guarantor is required to recognize, at the inception of a
guarantee, a liability for the fair value of the obligation undertaken in
issuing the guarantee. The initial recognition and initial measurement
provisions of this Interpretation are applicable on a prospective basis to
guarantees issued or modified after December 31, 2002, irrespective of the
guarantor's

F-13

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

fiscal year-end. The Company adopted this pronouncement upon the FASB's issuance
and the implementation had no current impact on the consolidated financial
statements.

3. ACQUISITIONS AND DIVESTITURES

Acquisitions

On December 17, 2002, Apache announced the acquisition of certain South
Louisiana properties comprising 234,000 net acres (366 square miles) with net
proved reserves of approximately 29.8 million barrels of oil equivalent (MMboe),
88 percent of which is natural gas, from a private company. The acquisition
includes 135 producing wells, access to 849 square miles of 3-D seismic covering
the relatively contiguous acreage position and ownership of the surface and
mineral rights on most of the acreage, for approximately $259 million, subject
to post-closing adjustments. Apache also entered into a separate exploration
joint venture with the seller whereby the seller will actively generate
prospects on certain South Louisiana acreage for a total cost of $25 million
over a two-year period. (See Note 11.)

In 2002, the Company also completed other acquisitions for cash
consideration totaling $95 million. These acquisitions added approximately 19.5
MMboe to the Company's proved reserves.

In March 2001, Apache completed the acquisition of substantially all of
Repsol's oil and gas concession interests in Egypt for approximately $447
million in cash, subject to normal post closing adjustments. The properties
included interests in seven Western Desert concessions and had estimated proved
reserves of 66 MMboe as of the acquisition date. The Company already held
interests in five of the seven concessions.

In March 2001, Apache completed the acquisition of subsidiaries of Fletcher
for approximately $465 million in cash and 1.9 million restricted shares of
Apache common stock issued to Shell Overseas Holdings (valued at $52.85 per
share), subject to normal post closing adjustments. The transaction included
properties located primarily in Canada's Western Sedimentary Basin. Estimated
proved reserves totaled 120.8 MMboe as of the acquisition date. Apache assumed a
liability of $103 million representing the fair value of derivative instruments
and fixed-price commodity contracts entered into by Fletcher.

The Fletcher and Repsol purchase prices were allocated to the assets
acquired and liabilities assumed based upon their estimated fair values as of
the date of acquisition, as follows:

In August 2001, Apache completed the acquisition of properties located in
Texas, Oklahoma and New Mexico with estimated proved reserves of 9.2 MMboe as of
the acquisition date for approximately $53 million in cash and the assumption of
certain liabilities, representing the fair value of derivative instruments of $9
million, subject to normal post-closing adjustments.

In November 2001, Apache completed the acquisition of all of Novus Bukha
Limited's (Novus) oil and gas concession interests in Egypt for approximately
$66 million in cash. The acquisition included estimated

F-14

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

proved reserves of approximately 11.7 MMboe as of the acquisition date. The
properties included interests in three Western Desert concessions, in which
Apache previously held an interest.

In 2001, the Company also completed other acquisitions for cash
consideration totaling $44 million. These acquisitions added approximately 4.9
MMboe to the Company's proved reserves.

In January 2000, Apache completed the acquisition of producing properties
in Western Oklahoma and the Texas Panhandle, formerly owned by a subsidiary of
Repsol, for approximately $119 million, plus assumed liabilities of
approximately $30 million. The properties were subject to an existing volumetric
production payment, which burdens future production from the acquired
properties. The $30 million assumed liability represents the estimated operating
costs associated with the volumetric production payment. The acquisition
included estimated proved reserves of approximately 28.7 MMboe, which was net of
the 8.4 MMboe production payment as of the acquisition date.

In June 2000, Apache completed the acquisition of long-lived producing
properties in the Permian Basin and South Texas from Collins & Ware, Inc.
(Collins & Ware) for approximately $321 million. The acquisition included
estimated proved reserves of approximately 83.7 MMboe as of the acquisition
date. One-third of the reserves were liquid hydrocarbons.

In August 2000, Apache completed the acquisition of a Delaware limited
liability company (LLC) owned by subsidiaries of Occidental Petroleum
Corporation (Occidental) and related natural gas production for approximately
$321 million including a discounted liability of $37 million, as of the
acquisition date, representing the present value of future payments of
approximately $44 million over four years. The remaining discounted liability at
December 31, 2002 was $20 million. The Occidental properties are located in 32
fields on 93 blocks on the Outer Continental Shelf of the Gulf of Mexico. The
acquisition included estimated proved reserves of approximately 53.1 MMboe as of
the acquisition date.

In December 2000, Apache completed the acquisition of Canadian properties
from Canadian affiliates of Phillips Petroleum Company (Phillips) for
approximately $490 million. The acquisition included estimated proved reserves
of approximately 70.0 MMboe as of the acquisition date. The properties comprise
approximately 212,000 net developed acres and 275,000 net undeveloped acres, 786
square miles of 3-D seismic and 4,155 miles of 2-D seismic located in the Zama
area of Northwest Alberta. The assets also include three sour gas plants with a
total capacity of 150 million cubic feet per day (MMcf/d), 13 compressor
stations and 150 miles of owned and operated gas gathering lines.

In 2000, the Company also completed other acquisitions for cash
consideration totaling $104 million. These acquisitions added approximately 18.3
MMboe to the Company's proved reserves.

The following unaudited pro forma information shows the effect on the
Company's consolidated results of operations as if the Fletcher and Repsol
acquisitions occurred on January 1, 2000. The pro forma information

F-15

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

includes only significant acquisitions and numerous assumptions, and is not
necessarily indicative of future results of operations.

Each transaction described above has been accounted for using the purchase
method of accounting and has been included in the consolidated financial
statements of Apache since the date of acquisition.

Pending Acquisitions

On January 13, 2003, Apache announced the acquisition of producing
properties in the U.K. North Sea and the Gulf of Mexico, with estimated proved
reserves of 233.2 MMboe, from BP p.l.c. (BP), for $1.3 billion, subject to
normal closing adjustments, with an effective date of January 1, 2003.
Approximately two-thirds of the reserves are in the North Sea's Forties oil
field, establishing a new international operating region for the Company. Apache
will become field operator with a 97 percent working interest. In conjunction
with the Forties acquisition, Apache may be required to issue a letter of credit
to BP to cover the present value of related asset retirement obligations if the
rating of our senior unsecured debt is lowered by both Moody's and Standard and
Poor's from the Company's current ratings of A- and A3, respectively.
Additionally, Apache has hedged a portion of Forties production at fixed prices
(see Note 4) and will create a defined benefit pension plan for certain
employees (see Note 11). The Gulf of Mexico properties are located offshore
Texas and Louisiana, where the Company has substantial existing operations. The
assets comprise 113 total blocks and 61 fields and 70 percent of the production
is operated. Apache will acquire a 100 percent working interest in 19 of the
fields. The Gulf of Mexico segment of the transaction closed March 13, 2003 and
the North Sea segment is expected to close early in the second quarter. The
Company is financing the acquisition with a combination of internally generated
funds, previously issued equity and debt.

Divestitures

In 2002, Apache sold marginal properties containing 1.8 MMboe of proved
reserves, for $7 million. Apache used the sales proceeds to reduce bank debt.

During 2001, Apache sold marginal properties, primarily in North America,
containing 88 MMboe of proved reserves, for $348 million. Apache used the
proceeds to reduce bank debt.

During 2000, Apache sold proprietary rights to certain Canadian seismic
data and various non-strategic oil and gas properties, collecting cash of $26
million.

4. DERIVATIVE INSTRUMENTS AND FIXED-PRICE PHYSICAL CONTRACTS

Apache uses a variety of strategies to manage its exposure to fluctuations
in commodity prices. Primarily, the company enters into cash flow hedges in
connection with certain acquisitions. The success of these

F-16

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

acquisitions is significantly influenced by Apache's ability to achieve targeted
production at forecasted prices. These hedges effectively reduce price risk on a
portion of the production from the acquisitions.

Apache 2002 Derivative Activity -- As part of the South Louisiana
properties acquired in December 2002, Apache entered into, and designated as a
cash flow hedge, natural gas option agreements to establish floor and ceiling
prices on anticipated future natural gas production. As of December 31, 2002,
the Company had the following natural gas volumes hedged through natural gas
options:

The fair value of derivative assets and liabilities recorded for the
Company's hedging activity represents the market value of the natural gas
options as of December 31, 2002. The hedging activity had no impact on natural
gas revenues during 2002. There was no material ineffectiveness associated with
the cash flow hedges during the period the options were outstanding.

2001 Unwind -- Prior to Apache's derivative activity during 2002, the
Company had historically entered into derivative positions divided into three
general categories: (1) Apache's hedging activity, (2) derivatives assumed in
acquisitions (Acquired Contracts), and (3) advances from gas purchasers. Driven
by the uncertainty of how the collapse of Enron Corp. could have impacted the
derivative markets, Apache closed all of its derivative positions and certain
fixed-price physical contracts during October and November 2001, receiving
proceeds of approximately $62 million (referred to as the "Unwind")

Upon adoption of SFAS No. 133 on January 1, 2001, or as of the acquisition
date in the case of the Acquired Contracts, the fair value of Apache's
derivative instruments was:

At the time SFAS 133 was implemented, natural gas prices were approaching
record highs. Although Apache was realizing higher prices on its unhedged
production, the fair value of the Company's cash flow hedges was
out-of-the-money by approximately $116 million ($71 million, net of income tax).
This unrealized loss was reflected as a charge to other comprehensive income.
Throughout the year, commodity prices were trending downward. As a result,
Apache realized only $40 million of this loss during the year. In connection
with the Unwind, the Company closed out the rest of these open positions and
received cash proceeds of $8 million. These proceeds will be recognized in
earnings as the original hedged production occurs. As of December 31, 2002, $3
million remains to be recognized in 2003.

The Company also uses long-term, fixed-price physical contracts to lock in
a portion of its natural gas production at a given price. In the Unwind, the
Company received approximately $13 million to terminate contracts with certain
counterparties. Since the Company has no continuing performance obligations
under the contracts, the amount was recognized as a gain in other revenues
(losses) in 2001.

In addition to the cash flow hedges the Company entered into, Apache
assumed $113 million of derivative and physical contracts in connection with two
acquisitions. Because these derivatives were out-of-
F-17

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

the-money when the Company acquired them, the liability was factored into the
consideration paid to the sellers (see Note 3). Since commodity prices generally
decreased after the acquisitions, Apache was able to settle this liability in
the Unwind for only $67 million, including $37 million paid to terminate the
remaining open positions. As a result, Apache recognized a gain of $32 million
during 2001, and $14 million during 2002. As of December 31, 2002, a loss of
$527,000 remains and will be recognized in 2003 and 2004.

Effective January 1, 2001, Apache recognized a derivative asset of $121
million reflecting the fair value of gas price swaps entered into in connection
with certain advance payments received from gas purchasers in 1998 and 1997.
Apache also recognized a derivative liability of $121 million reflecting the
fair value of an embedded fixed price physical contract. The net effect of these
transactions resulted in Apache delivering natural gas to the advance purchasers
at prevailing market prices. Apache terminated the gas price swaps in the
Unwind, receiving proceeds of $78 million. These proceeds will be recognized
into earnings over the remaining life of the contracts and effectively increase
the original contract's fixed prices by approximately 51 percent. Upon
termination, Apache designated the remaining contractual volumes of gas that
will be delivered to the purchaser as a normal, fixed-price physical contract.
See Note 8 for additional information on the advances from gas purchasers.

Apache 2003 Derivative Activity -- Subsequent to year end and in
conjunction with the BP acquisition, Apache entered into several derivative
transactions in order to preserve the Company's financial position in a period
of cyclically high gas and oil prices. The Company entered into the following
natural gas and crude oil fixed-price swaps:

Although the fixed-price swaps are settled at NYMEX, the Company's hedged
forecasted sales are based on pricing at different locations. The Company
believes the hedging relationships are highly effective; however, Apache entered
into separate natural gas basis swap contracts to fix a portion of the sales
price differential. Apache designated all of the natural gas and crude oil
fixed-price swaps and basis swaps as cash flow hedges of anticipated sales.

In addition to the fixed-price swaps, Apache entered into a separate crude
oil physical sales contract with BP.

5. SHORT-TERM INVESTMENTS

In August 2001, Apache purchased $116 million in U.S. Government Agency
Notes. The Company subsequently sold $13 million of the notes in 2001. Of the
remaining balance, $17 million were designated as "available for sale"
securities and were sold for approximately $17 million in January 2002.
Approximately $86 million were designated as "held to maturity" and carried at
amortized cost. These notes paid interest at rates from 6.25 percent to 6.375
percent and matured on October 15, 2002.

F-18

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

6. DEBT

Long-Term Debt

In April 2002, the Company issued $400 million principal amount, $397
million net of discount, of senior unsecured 6.25-percent notes maturing on
April 15, 2012. The notes are redeemable, as a whole or in part, at Apache's
option, subject to a make-whole premium. The proceeds were used to repay a
portion of the Company's outstanding commercial paper and for general corporate
purposes.

On June 3, 2002, Apache entered into a new $1.5 billion global credit
facility to replace its existing global and 364-day credit facilities. The new
global credit facility consists of four separate bank facilities: a $750 million
364-day facility in the United States (364-day facility); a $450 million
five-year facility in the United States (U.S. five-year facility); a $150
million five-year facility in Australia; and a $150 million five-year facility
in Canada. The financial covenants of the global credit facility require the
Company to: (i) maintain a consolidated tangible net worth, plus the aggregate
amount of any non-cash write-downs, of at least $2.3 billion as of December 31,
2002, adjusted for subsequent earnings, (ii) maintain an aggregate book-value
for assets of Apache and certain subsidiaries, as defined, on an unconsolidated
basis of at least $2 billion as of December 31, 2002, and (iii) maintain a ratio
of debt to capitalization of not greater than 60 percent at the end of any
fiscal quarter. The Company was in compliance with all financial covenants at
December 31, 2002.

F-19

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

The five-year facilities are scheduled to mature on June 3, 2007 and the
364-day facility is scheduled to mature on June 1, 2003. The 364-day facility
allows the Company the option to convert outstanding revolving loans at maturity
into one-year term loans. The Company may request extensions of the maturity
dates subject to approval of the lenders. At the Company's option, the interest
rate is based on (i) the greater of (a) The JP Morgan Chase Bank prime rate or
(b) the federal funds rate plus one-half of one percent or (ii) the London
Interbank Offered Rate (LIBOR) plus a margin determined by the Company's senior
long-term debt rating. In addition, the U.S. five-year facility allows the
Company the option to borrow under competitive auctions. At December 31, 2002,
the margin over LIBOR for committed loans was .30 percent on the five-year
facilities and .32 percent on the 364-day facility. If the total amount of the
loans borrowed under all of the facilities equals or exceeds 33 percent of the
total facility commitments, then an additional .125 percent will be added to the
margins over LIBOR. The Company also pays a quarterly facility fee of .10
percent on the total amount of each of the five-year facilities and .08 percent
on the total amount of the 364-day facility. The facility fees vary based upon
the Company's senior long-term debt rating. The U.S. five-year facility and the
364-day facility are used to support Apache's commercial paper program. The
available borrowing capacity under the global credit facility at December 31,
2002 was $1.2 billion.

At December 31, 2002, the Company also had certain uncommitted money market
lines of credit which are used from time to time for working capital purposes,
under which an aggregate of $9 million was outstanding as of December 31, 2002.
Such borrowings are classified as long-term debt in the accompanying
consolidated balance sheet as the Company has the ability and intent to
refinance such amounts on a long-term basis through available borrowing capacity
under the U.S. five-year facility and the 364-day facility.

The Company has a $1.2 billion commercial paper program which enables
Apache to borrow funds for up to 270 days at competitive interest rates. The
commercial paper balances at December 31, 2002 and 2001 were classified as
long-term debt in the accompanying consolidated balance sheet as the Company has
the ability and intent to refinance such amounts on a long-term basis through
either the rollover of commercial paper or available borrowing capacity under
the U.S. five-year facility and the 364-day facility. The weighted average
interest rate for commercial paper was 1.85 percent in 2002 and 4.10 percent in
2001.

The 9.25-percent notes matured June 1, 2002 and were repaid using
commercial paper. These notes were classified as long-term debt at December 31,
2001, in the accompanying consolidated balance sheet as the Company had the
ability and intent to refinance such amount on a long-term basis through
available borrowing capacity under the global credit facility and 364-day
facility.

The Company does not have the right to redeem any of its notes or
debentures (other than the Apache Corporation 6.25-percent notes due April 15,
2012 and the Apache Finance Australia 6.5-percent notes due 2007, mentioned
below) prior to maturity. Under certain conditions, the Company has the right to
advance maturity on the 7.7-percent notes, 7.95-percent notes, 7.375-percent
debentures and 7.625-percent debentures.

The notes issued by Apache Finance Pty Ltd (Apache Finance Australia) and
Apache Finance Canada Corporation (Apache Finance Canada) are irrevocably and
unconditionally guaranteed by Apache and, in the case of Apache Finance
Australia, by Apache North America, Inc., an indirect wholly-owned subsidiary of
the Company. Under certain conditions related to changes in relevant tax laws,
Apache Finance Australia and Apache Finance Canada have the right to redeem the
notes prior to maturity. In the case of the 6.5-percent notes, Apache Finance
Australia may also redeem the notes at its option subject to a make-whole
premium (see Note 17).

In August 2001, Apache Clearwater, Inc. (Apache Clearwater), a subsidiary
of Apache, issued $37 million of senior floating rate notes, which mature August
9, 2003. The notes bear interest at a rate equal to three-month LIBOR plus 1.05
percent and are redeemable at the Company's discretion. The balance is
classified as long-term debt in the accompanying consolidated balance sheet as
the Company has the ability

F-20

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

and intent to refinance such amounts on a long-term basis through available
borrowing capacity under the U.S. five-year facility and the 364-day facility.

The $14 million of discounts on the Company's debt at December 31, 2002, is
being amortized over the life of the debt issuances as additional interest
expense.

As of December 31, 2002 and 2001, the Company had approximately $19 million
and $14 million, respectively, of unamortized deferred loan costs associated
with its various debt obligations. These costs are included in deferred charges
and other in the accompanying consolidated balance sheet and are being amortized
to expense over the life of the related debt.

The indentures for the notes described above place certain restrictions on
the Company, including limits on Apache's ability to incur debt secured by
certain liens and its ability to enter into certain sale and leaseback
transactions. Upon certain change in control, all of these debt instruments
would be subject to mandatory repurchase, at the option of the holders.

Aggregate Maturities of Debt

The Company made cash payments for interest, net of amounts capitalized, of
$99 million, $105 million and $93 million for the years ended December 31, 2002,
2001 and 2000, respectively.

7. INCOME TAXES

Income before income taxes is composed of the following:

F-21

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

The total provision for income taxes consists of the following:

A reconciliation of the U.S. federal statutory income tax amounts to the
effective amounts is shown below:

The net deferred tax liability is comprised of the following:

F-22

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

The Company has not recorded deferred income taxes on the undistributed
earnings of its foreign subsidiaries as management intends to permanently
reinvest such earnings. As of December 31, 2002, the undistributed earnings of
the foreign subsidiaries amounted to approximately $2.1 billion. Upon
distribution of these earnings in the form of dividends or otherwise, the
Company may be subject to U.S. income taxes and foreign withholding taxes. It is
not practical, however, to estimate the amount of taxes that may be payable on
the eventual remittance of these earnings after consideration of available
foreign tax credits. Presently, limited foreign tax credits are available to
reduce the U.S. taxes on such amounts if repatriated.

At December 31, 2002, the Company had federal net operating loss
carryforwards of $116 million, state net operating loss carryforwards of $317
million and foreign net operating loss carryforwards of $10 million. The state
and federal net operating losses will expire over the next 15 and 20 years,
respectively, if they are not otherwise utilized. The foreign net operating loss
carryforwards relate to foreign pre-production expenditures which will not be
deductible for foreign income tax purposes until production begins, which is
expected to be in 2003. Once these expenditures are deducted for foreign income
tax purposes, any net operating loss has a five-year carryforward period. A full
valuation allowance has been provided on these foreign losses. The Company has
alternative minimum tax (AMT) credit carryforwards of $14 million that can be
carried forward indefinitely, but which can be used only to reduce regular tax
liabilities in excess of AMT liabilities.

The Company made cash payments for income and other taxes, net of refunds,
of $171 million, $172 million and $123 million for the years ended December 31,
2002, 2001 and 2000, respectively.

8. ADVANCES FROM GAS PURCHASERS

In July 1998, Apache received $72 million from a purchaser as an advance
payment for future natural gas deliveries ranging from 6,726 MMBtu per day to
24,669 MMBtu per day, for a total of 45,330,949 MMBtu, over a ten-year period
commencing August 1998. In addition, the purchaser pays Apache a monthly fee of
$.08 per MMBtu on the contracted volumes. Concurrent with this arrangement,
Apache entered into three gas price swap contracts with a third party under
which Apache became a fixed price payor for identical volumes at prices ranging
from $2.34 per MMBtu to $2.56 per MMBtu. The net result of these related
transactions was that gas delivered to the purchaser was reported as revenue at
prevailing spot prices with Apache realizing a premium associated with the
monthly fee paid by the purchaser.

In August 1997, Apache received $115 million from a purchaser as an advance
payment for future natural gas deliveries of 20,000 MMBtu per day over a
ten-year period commencing September 1997. In addition, the purchaser pays
Apache a monthly fee of $.07 per MMBtu on the contracted volumes. Concurrent
with this arrangement, Apache entered into two gas price swap contracts with a
third party under which Apache became a fixed price payor for identical volumes
at average prices starting at $2.19 per MMBtu in 1997 and escalating to $2.59
per MMBtu in 2007. The net result of these related transactions was that gas
delivered to the purchaser was reported as revenue at prevailing spot prices
with Apache realizing a premium associated with the monthly fee paid by the
purchaser.

Contracted volumes relating to these arrangements are included in the
Company's unaudited supplemental oil and gas disclosures.

These advance payments have been classified as advances from gas purchasers
and are being recognized in oil and gas production revenues as gas is delivered
to the purchasers under the terms of the contracts. At December 31, 2002 and
2001, advances of $125 and $140 million, respectively, were outstanding. Gas
volumes delivered to the purchaser are reported as revenue at prices used to
calculate the amount advanced, before imputed interest, plus or minus amounts
paid or received by Apache applicable to the price swap agreements. Interest
expense is recorded based on a rate of eight percent.

In October and November 2001, Apache terminated the gas price swap
contracts associated with these advances and received proceeds of $78 million.
The effect of terminating these derivative instruments reduces
F-23

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

future price risk exposure to natural gas price volatility by establishing a
fixed price for the remaining quantities of gas to be delivered under the terms
of the contracts. Upon termination, Apache designated the remaining contractual
volumes of gas that will be delivered to the purchasers as a normal fixed-price
physical sale. The prices used in settling the derivatives represented an
average 51 percent increase over the prices reflected in the original contracts.
No gain or loss was recognized at termination. The settlement is carried as
advances from gas purchases on the consolidated balance sheet and will be
recognized in monthly sales based on the portion of the proceeds applicable to
each production month over the remaining life of the contracts.

9. CAPITAL STOCK

The following shares have been restated to reflect the 10 percent and five
percent stock dividends as discussed in Note 1 of these financial statements.

Common Stock Outstanding

- ---------------

(1) In August 2000, Apache completed a public offering of 10.6 million shares of
common stock, including 1.4 million shares for the underwriters'
over-allotment option, for net proceeds of $434 million.

(2) In March 2001, Apache issued to Shell Overseas Holdings 1.9 million
restricted shares for net proceeds of $100 million in connection with the
Fletcher acquisition.

(3) On May 15, 2002, we completed the mandatory conversion of our Series C
preferred stock into approximately 6.5 million common shares.

(4) On January 22, 2003, in conjunction with the BP transaction, we completed a
public offering of 9.9 million shares of common stock, including 1.3 million
shares for the underwriters' over-allotment option, raising net proceeds of
$554 million.
F-24

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Net Income Per Common Share -- A reconciliation of the components of basic
and diluted net income per common share for the years ended December 31, 2002,
2001 and 2000 is presented in the table below:

Stock Option Plans -- At December 31, 2002, officers and employees had
options to purchase shares of the Company's common stock under one or more
employee stock option plans adopted in 1990, 1995, 1998 and 2000 (collectively,
the Stock Option Plans). Under the Stock Option Plans, the exercise price of
each option equals the market price of Apache's common stock on the date of
grant. Options generally become exercisable ratably over a four-year period and
expire after 10 years.

The 2000 Stock Option Plan also permits the company to issue options with a
reload provision, which has been included in certain options granted to officers
and certain key employees of the Company. Options with reload provisions vest
over two years, in equal installments every six months. The reload provision
permits the granting of new options for shares with a current market value equal
to any portion of the original option exercise price, or withholding taxes due
on the exercise of the original option, paid by the optionee by means of the
transfer or attestation of ownership of shares of the company's common stock or
units in the company's Deferred Delivery Plan (if the income from the exercise
is to be deferred into that plan). The Deferred Delivery Plan allows the
executive officers and certain key employees of the company to defer the receipt
of income from equity compensation plans such as the Company's Stock Option
Plans. The new option granted as a reload vests after six months, expiring on
the same date as the original option

1996 Performance Stock Option Plan -- On October 31, 1996, the Company
established the 1996 Performance Stock Option Plan (the Performance Plan) for
substantially all full-time employees, excluding officers and certain key
employees. Under the Performance Plan, the exercise price of each option equals
the market price of Apache common stock on the date of grant. All options become
exercisable after nine and one-half years and expire 10 years from the date of
grant. Under the terms of the Performance Plan, no grants were made after
December 31, 1998.

F-25

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

A summary of the status of the plans described above as of December 31,
2002, 2001 and 2000, and changes during the years then ended, is presented in
the table and narrative below (shares in thousands):

The Black-Scholes model used by Apache to calculate option fair values was
originally developed to estimate the fair value of freely tradable, fully
transferable options without vesting and/or trading restrictions, which
significantly differs from Apache's stock option awards. These models also
require highly subjective assumptions, including future stock price volatility
and expected time until exercise, which significantly affect the calculated
values. Accordingly, management does not believe that this model provides a
reliable single measure of the fair value of Apache's stock option awards, but
in the absence of a better prescribed methodology, utilizes it to "value"
options in accordance with SEC guidelines.

The following table summarizes information about stock options covered by
the plans described above that are outstanding at December 31, 2002 (shares in
thousands):

- ---------------

(1) Excludes 133,701, 142,931 and 164,588 shares as of December 31, 2002, 2001
and 2000, respectively, issuable under stock options assumed by Apache in
connection with the 1996 acquisition of The Phoenix Resource Companies, Inc.

(2) The fair value of each option is estimated as of the date of grant using the
Black-Scholes option-pricing model with the following weighted-average
assumptions used for grants in 2002, 2001 and 2000, respectively: (i)
risk-free interest rates of 4.87, 4.95 and 6.74 percent; (ii) expected lives
of 4.5 years for 2002 and five years for 2001 and 2000 for the Stock Option
Plans; (iii) expected volatility of 37.17, 41.39 and 37.42 percent; and (iv)
expected dividend yields of .68, .51 and .57 percent.

F-26

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Share Appreciation Plan -- In October 2000, the Company adopted the Share
Appreciation Plan under which grants were made to the Company's officers and
substantially all full-time employees. The Share Appreciation Plan provides for
issuance of up to an aggregate of 4.04 million shares of Apache common stock,
based on attainment of one or more of three share price goals (the Share Price
Goals) and/or a separate production goal (the Production Goal). Generally,
shares will be issued in three installments over 24 months after achievement of
each goal. When and if the goals are achieved, the Company will recognize
compensation expense over the 24-month vesting period equal to the value of the
stock on the date the particular goal is achieved. The shares of Apache common
stock contingently issuable under the Share Appreciation Plan will be excluded
from the computation of income per common share until the stated goals are met.

The Share Price Goals are based on achieving a share price of $87, $104 and
$156 per share before January 1, 2005. A summary of the number of shares
contingently issuable under the Share Price Goals as of December 31, 2002, 2001
and 2000 is presented in the table below (shares in thousands):

The Production Goal will be attained if and when the Company's average
daily production equals or exceeds 1.33 barrels of oil equivalent per diluted
share (calculated on an annualized basis) during any fiscal quarter ending
before January 1, 2005. Such level of production was approximately twice the
Company's level of production at the time the Share Appreciation Plan was
adopted. Shares issuable in connection with the Production Goal will be a number
of shares of the Company's common stock equal to (a) 37.5 percent, 75 percent or
150 percent of a participant's annual base salary (at the time of attainment),
as applicable, divided by (b) the average daily per share closing price of the
Company's common stock for the fiscal quarter during which the Production Goal
is attained.

In 2001, the Company modified the Stock Option Plans, 1996 Performance
Stock Option Plan and 2000 Share Appreciation Plan to allow for immediate
vesting upon a change in control of ownership. This modification did not require
recognition of any compensation expense.

- ---------------

(1) Represents shares issuable upon attainment of $87, $104 and $156 per share
price goals of 675,896 shares, 1,690,525 shares and 750,699 shares,
respectively, in 2002 and 693,134 shares, 1,732,394 shares and 769,897
shares, respectively, in 2001 and 626,010 shares, 1,562,715 shares and
694,155 shares, respectively, in 2000.

(2) The fair value of each Share Price Goal conditional grant is estimated as of
the date of grant using a Monte Carlo simulation with the following
weighted-average assumptions used for grants in 2002, 2001 and 2000,
respectively: (i) risk-free interest rate of 2.90, 4.16 and 5.95 percent;
(ii) expected volatility of 38.77, 46.27 and 44.69 percent; and (iii)
expected dividend yield of .70, .77 and .44 percent.
F-27

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

In December 1998, the Company entered into a conditional stock grant
agreement with an executive of the Company which would award up to 115,496
shares of the Company's common stock in five annual installments. Each
installment has a five-year vesting period, 40 percent of the conditional grants
will be paid in cash at the market value of the stock on the date of payment and
the balance (69,297 shares) will be issued in Apache common stock. In 2001, the
Company modified the conditional stock grant agreement to allow for immediate
vesting upon a change in control of ownership. This modification did not require
recognition of any compensation expense.

In May 2002, Apache's board of directors approved an executive restricted
stock plan for all executive officers and certain key employees in lieu of stock
options. During the year, the Company awarded 114,975 restricted shares that are
subject to ratable vesting over four years. The value of the stock issued was
established by the market price on the date of grant and will be recorded as
compensation expense over the vesting terms. During 2002, $538 thousand was
charged to expense.

Preferred Stock

The Company has five million shares of no par preferred stock authorized,
of which 25,000 shares have been designated as Series A Junior Participating
Preferred Stock (the Series A Preferred Stock), 100,000 shares have been
designated as the 5.68 percent Series B Cumulative Preferred Stock (the Series B
Preferred Stock) and 140,000 shares have been designated as Series C Preferred
Stock. The shares of Series A Preferred Stock are authorized for issuance
pursuant to certain rights that trade with Apache common stock outstanding and
are reserved for issuance upon the exercise of the Rights as defined and
discussed below.

Rights to Purchase Series A Preferred Stock -- In December 1995, the
Company declared a dividend of one right (a Right) for each 1.155 shares
(adjusted for the 10 percent and five percent stock dividends) of Apache common
stock outstanding on January 31, 1996. Each full Right entitles the registered
holder to purchase from the Company one ten-thousandth (1/10,000) of a share of
Series A Preferred Stock at a price of $100 per one ten-thousandth of a share,
subject to adjustment. The Rights are exercisable 10 calendar days following a
public announcement that certain persons or groups have acquired 20 percent or
more of the outstanding shares of Apache common stock or 10 business days
following commencement of an offer for 30 percent or more of the outstanding
shares of Apache common stock. In addition, if a person or group becomes the
beneficial owner of 20 percent or more of Apache's outstanding common stock
(flip in event), each Right will become exercisable for shares of Apache's
common stock at 50 percent of the then market price of the common stock. If a 20
percent shareholder of Apache acquires Apache, by merger or otherwise, in a
transaction where Apache does not survive or in which Apache's common stock is
changed or exchanged (flip over event), the Rights become exercisable for shares
of the common stock of the company acquiring Apache at 50 percent of the then
market price for Apache common stock. Any Rights that are or were beneficially
owned by a person who has acquired 20 percent or more of the outstanding shares
of Apache common stock and who engages in certain transactions or realizes the
benefits of certain transactions with the Company will become void. If an offer
to acquire all of the Company's outstanding shares of common stock is determined
to be fair by Apache's board of directors, the transaction will not trigger a
flip in event or a flip over event. The Company may also redeem the Rights at
$.01 per Right at any time until 10 business days after public announcement of a
flip in event. The Rights will expire on January 31, 2006, unless earlier
redeemed by the Company. Unless the Rights have been previously redeemed, all
shares of Apache common stock issued by the Company after January 31, 1996 will
include Rights. Unless and until the Rights become exercisable, they will be
transferred with and only with the shares of Apache common stock.

Series B Preferred Stock -- In August 1998, Apache issued 100,000 shares
($100 million) of Series B Preferred Stock in the form of one million depositary
shares, each representing one-tenth (1/10) of a share of Series B Preferred
Stock, for net proceeds of $98 million. The Series B Preferred Stock has no
stated maturity,

F-28

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

is not subject to a sinking fund and is not convertible into Apache common stock
or any other securities of the Company. Apache has the option to redeem the
Series B Preferred Stock at $1,000 per preferred share on or after August 25,
2008. Holders of the shares are entitled to receive cumulative cash dividends at
an annual rate of $5.68 per depositary share when, and if, declared by Apache's
board of directors.

Series C Preferred Stock -- In May 1999, Apache issued 140,000 shares ($217
million) of Series C Preferred Stock in the form of seven million depositary
shares each representing one-fiftieth (1/50) of a share of Series C Preferred
Stock, for net proceeds of $211 million. Holders of the shares were entitled to
receive cumulative cash dividends at an annual rate of 6.5 percent, or $2.015
per depositary share when, and if, declared by Apache's board of directors.

In 2000, Apache bought back 75,900 depositary shares at an average price of
$34.42 per share. The excess of the purchase price to reacquire the depositary
shares over the original issuance price is reflected as a preferred stock
dividend in the accompanying statement of consolidated operations. The remaining
depositary shares converted into 6,554,865 shares of Apache common stock in
2002.

Comprehensive Income -- Components of accumulated other comprehensive
income (loss) consist of the following:

The unrealized gain (loss) on available for sale securities at December 31,
2001 and 2000 is net of income tax expense (benefit) of $67,000 and $(94,000),
respectively. The currency translation adjustments are not adjusted for income
taxes as they relate to a permanent investment in non-U.S. subsidiaries.

A rollforward of the unrealized gain on derivatives is presented in the
table below:

Based on commodity prices as of December 31, 2002, the Company expects to
reclassify losses of $5 million ($3 million after tax) to earnings from the
balance in accumulated other comprehensive income during the next twelve months.
The remaining balance in other comprehensive income is expected to be
reclassified to future earnings, contemporaneously with the related sales of
natural gas production as applicable to specific hedges. The actual amounts that
will be reclassified to earnings over the next year and beyond could vary
materially from this estimated amount as a result of changes in market
conditions.

F-29

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

10. FINANCIAL INSTRUMENTS

The following table presents the carrying amounts and estimated fair values
of the Company's financial instruments at December 31, 2002 and 2001. See Note 4
for a discussion of the Company's derivative instruments.

The following methods and assumptions were used to estimate the fair value
of the financial instruments summarized in the table above. The Company's trade
receivables and trade payables are by their very nature short-term. The carrying
values included in the accompanying consolidated balance sheet approximate fair
value at December 31, 2002 and December 31, 2001.

Short-Term Investments -- The fair value of the Company's short-term
investments are estimates provided to the Company by independent investment
banking firms.

Long-Term Debt -- The 2002 fair value of the notes and debentures is based
upon an estimate provided to the Company by an independent investment banking
firm. The fair value of the notes and debentures for 2001 is based on quoted
market prices and in the case of the 7.625-percent debentures, an estimate
provided by an independent banking firm. The carrying amount of the global
credit facility, commercial paper, money market lines of credit and Apache
Clearwater notes approximated fair value because the interest rates are variable
and reflective of market rates.

F-30

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

11. COMMITMENTS AND CONTINGENCIES

Litigation

China -- Apache China Corporation LDC was sued in an arbitration by Texaco
China, B.V. in September 2001. Texaco China later added Apache Bohai Corporation
LDC to the arbitration. The arbitration covers Texaco's claims for damages
arising out of Apache Bohai's alleged failure to drill three wells, prior to
re-assignment of the interest to Texaco. Apache China and Apache Bohai deny any
liability. Apache Bohai filed suit in federal district court, contending there
is no right to arbitration. The district court denied Apache's claim. Apache has
filed with the federal court of appeals to have the trial court's opinion
reviewed and reversed. That matter is currently pending, as is the arbitration,
with a hearing date expected during 2003.

On February 5, 2003, the Bankruptcy Court for the Western District of
Louisiana entered an order confirming Debtor XCL-China Ltd.'s most recently
filed plan of arrangement. XCL-China is a participant in certain of our
concessions in the Zhao Dong Block in the Bohai Bay of China. We understand that
XCL Ltd. will now have one percent or less ownership interest, if any, in
XCL-China with any remaining ownership interest being held by the bondholders of
XCL Ltd. In connection with the order, Apache China has agreed to waive its
approval and preferential purchase rights of the XCL-China interest in the Zhao
Dong Block for the event of the confirmation and reorganization of the Debtor
only, without waiver of any rights concerning future events. All agreements
approved in 2001 by Apache China, XCL-China and the various Chinese parties,
which resolved the funding and subsequent repayment of XCL-China's share of
development costs, remain in place.

Canada -- In December 2000, certain subsidiaries of the Company and Murphy
Oil Corporation (Murphy) filed a lawsuit in Canada charging The Predator
Corporation Ltd. (Predator) and others with misappropriation and misuse of
confidential well data to obtain acreage offsetting a significant natural gas
discovery made by Apache and Murphy during 2000 in the Ladyfern area of
northeast British Columbia. In February 2001, Predator filed a counterclaim
seeking more than C$6 billion and has since reduced this amount to no more than
C$4 billion. Management believes that the counterclaim is without merit and that
the amount claimed by Predator is frivolous.

Cinergy -- As described in Note 13 Transactions with Related Parties and
Major Customers, Cinergy Marketing & Trading, LLC (Cinergy) purchases most of
the Company's United States natural gas production. Disputes have arisen between
Cinergy and Apache concerning various matters, including Cinergy's claim to
market Apache's Canadian gas production. In response to these disputes, Cinergy
commenced an arbitration proceeding in September 2001 seeking, among other
things, specific performance to require the Company to sell its Canadian gas
production to Cinergy or pay damages. The Company is disputing Cinergy's
assertions (including their claim to market our Canadian production), filing a
general denial and counterclaim against Cinergy for amounts arising from, among
other things, an audit commenced in 2001. Management does not believe the
outcome of the arbitration will be material to our financial position or results
of operations. The Company continues to market most of its U.S. gas production
through Cinergy, although the Company is actively discussing its gas marketing
arrangements and a resolution of the disputes with Cinergy.

The Company is involved in litigation and is subject to governmental and
regulatory controls arising in the ordinary course of business. It is
management's opinion that all claims and litigation involving the Company are
not likely to have a material adverse effect on its financial position or
results of operations.

Environmental -- The Company, as an owner or lessee and operator of oil and
gas properties, is subject to various federal, provincial, state, local and
foreign country laws and regulations relating to discharge of materials into,
and protection of, the environment. These laws and regulations may, among other
things, impose liability on the lessee under an oil and gas lease for the cost
of pollution clean-up resulting from
F-31

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

operations and subject the lessee to liability for pollution damages. In some
instances, the Company may be directed to suspend or cease operations in the
affected area. We maintain insurance coverage, which we believe is customary in
the industry, although we are not fully insured against all environmental risks.

Apache manages its exposure to environmental liabilities on properties to
be acquired by identifying existing problems and assessing the potential
liability. The Company also conducts periodic reviews, on a company-wide basis,
to identify changes in its environmental risk profile. These reviews evaluate
whether there is a probable liability, its amount, and the likelihood that the
liability will be incurred. The amount of any potential liability is determined
by considering, among other matters, incremental direct costs of any likely
remediation and the proportionate cost of employees who are expected to devote a
significant amount of time directly to any possible remediation effort. As it
relates to evaluations of purchased properties, depending on the extent of an
identified environmental problem, the Company may exclude a property from the
acquisition, require the seller to remediate the property to Apache's
satisfaction, or agree to assume liability for the remediation of the property.
The Company's general policy is to limit any reserve additions to any incidents
or sites that are considered likely to result in an expected remediation cost
exceeding $100,000. Any environmental costs and liabilities that are not
reserved for are treated as an expense when actually incurred. In our
estimation, neither these expenses nor expenses related to training and
compliance programs, are likely to have a material impact on our financial
condition. As of December 31, 2002, the Company had an undiscounted reserve for
environmental remediation of approximately $10 million. Apache is not aware of
any environmental claims existing as of December 31, 2002, which have not been
provided for or would otherwise have a material impact on its financial position
or results of operations. There can be no assurance, however, that current
regulatory requirements will not change, or past non-compliance with
environmental laws will not be discovered on the Company's properties.

Exploration Agreement -- In conjunction with the purchase of oil and gas
properties in December 2002, Apache entered into a separate exploration joint
venture with the seller whereby the seller will actively generate prospects on
certain South Louisiana acreage through December 31, 2004. Under the terms of
the agreement, Apache will pay up to $25 million for the seller's share of
seismic, lease acquisition and drilling and completion cost on covered
prospects, with no more than $13 million of carried cost required to be paid on
behalf of the seller through December 31, 2003. Apache has the option, but not
the obligation, to participate in any individual prospect proposed by the
seller. If Apache does not pay a total of $25 million of covered cost through
December 31, 2004, it is obligated to pay the difference to the seller within 90
days of the expiration of the agreement.

International Lease Concessions -- The Company, through its subsidiaries,
has acquired or has been conditionally or unconditionally granted exploration
rights in Australia, Egypt, China and Poland. In order to comply with the
contracts and agreements granting these rights, the Company, through various
wholly-owned subsidiaries, is committed to expend approximately $71 million
through 2006.

Retirement and Deferred Compensation Plans -- The Company provides a 401(k)
savings plan for employees which allows participating employees to elect to
contribute up to 25 percent of their salaries, with Apache making matching
contributions up to a maximum of six percent of each employee's salary. In
addition, the Company annually contributes six percent of each participating
employee's compensation, as defined, to a money purchase retirement plan. The
401(k) plan and the money purchase retirement plan are subject to certain
annually-adjusted, government-mandated restrictions which limit the amount of
each employee's contributions.

For certain eligible employees, the Company also provides a non-qualified
retirement/savings plan which allows the deferral of up to 50 percent of each
such employee's salary, and which accepts employee contributions and the
Company's matching contributions in excess of the above-referenced restrictions
on the 401(k) savings plan and money purchase retirement plan. Additionally,
Apache Energy Limited and Apache

F-32

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Canada Ltd. maintain separate retirement plans, as required under the laws of
Australia and Canada, respectively.

Vesting in the Company's contributions to the 401(k) savings plan, the
money purchase retirement plan and the non-qualified retirement/savings plan
occurs at the rate of 20 percent per year. Upon a change in control of
ownership, vesting is immediate. Total costs under all plans were $18 million,
$16 million and $9 million for 2002, 2001 and 2000, respectively. The unfunded
liability for all plans as of December 31, 2002 and 2001 has been recorded in
other accrued expenses.

In connection with the pending acquisition of U.K. North Sea assets from
BP, Apache will establish a defined benefit pension plan for certain employees
acquired in the transaction. BP will contribute amounts to the new plan related
to past service for the transferred employees.

Operating Lease and Other Commitments -- The Company has leases for
buildings, facilities and equipment with varying expiration dates through 2008.
Net rental expense was $16 million, $18 million and $16 million for 2002, 2001
and 2000, respectively.

As of December 31, 2002, minimum rental commitments under long-term
operating leases, net of sublease rentals; and long-term pipeline transportation
commitments, ranging from one to 21 years, are as follows:

12. PREFERRED INTERESTS OF SUBSIDIARIES

In August 2001, Apache entered into a series of financing transactions,
described below, to pay down existing debt and increase financial flexibility.

Apache contributed interests in various fields valued at $923 million to
new subsidiaries in connection with the financing transactions. Additionally,
Apache contributed $116 million in U.S. Government Agency Notes, as discussed in
Note 5. Unrelated institutional investors contributed $443 million ($441
million, net of issuance costs) to the various subsidiaries in exchange for
preferred stock ($82 million) of the subsidiaries and a limited partner interest
($361 million) in one of the entities. The third party investors are entitled to
receive a weighted average return of 123 basis points above the prevailing LIBOR
interest rate. The preferred stock and limited partner interests are repayable
from the assets of the subsidiaries. Apache retains credit risks related to
collection of proceeds from product sales and intercompany loans. Apache also
has an obligation to contribute an aggregate amount not to exceed $250 million
to fund present and future business operations of the subsidiaries. However, the
investors are not entitled to receive more than their $443 million original
investment, plus the agreed-upon return. One of the subsidiaries also issued $37
million of senior floating rate notes as discussed in Note 6.

F-33

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

The limited partnership is scheduled to terminate as of August 9, 2021.
However, the general partner, an Apache subsidiary, may elect to retire all or
part of the limited partner's interest at any time without penalty. In addition,
the limited partnership agreement requires that the limited and general partners
reset the partners' rate of return over LIBOR every five years beginning in
2006. If the partners fail to mutually agree on new rates of return, the general
partner must either dissolve the partnership or purchase the limited partner's
interest. Upon dissolution of the partnership, retirement of the limited
partner's interest, or purchase of the limited partner's interest by the general
partner, the limited partner will receive the unrecouped balance of its initial
$361 million capital investment.

If Apache's senior unsecured long-term debt ratings from Standard & Poor's
and Moody's fall to BBB- or lower and Baa3 or lower, respectively, or if either
rating is withdrawn, our subsidiaries that issued the preferred stock and
limited partnership interests may need to obtain additional cash or cash
equivalents or redeem part of the preferred interests to remain in compliance
with certain covenants. Also, if Apache's rating falls to BB or lower or Ba2 or
lower, the limited partner has the right to cause the dissolution of the
partnership, though Apache can avoid this by exercising its right to retire the
limited partnership interests without penalty.

The preferred stock certificates require that the Apache subsidiaries and
their preferred shareholders reset the preferred stock dividend rate every five
years beginning in 2006. If they fail to mutually agree on a new rate, the
Apache subsidiaries must either register the stock for public sale, or redeem
all of the outstanding preferred stock. The Apache subsidiaries may elect to
redeem all or part of the preferred stock at any time without penalty.

The assets and liabilities of the subsidiaries are included in Apache's
consolidated financial statements at historical costs, with the preferred stock
and limited partner interests of the subsidiaries reflected as a preferred
interests of subsidiaries in the consolidated balance sheet. The dividends paid
on the preferred stock and distributions paid on the limited partner interests
are reflected as preferred interests of subsidiaries in the statement of
consolidated operations.

13. TRANSACTIONS WITH RELATED PARTIES AND MAJOR CUSTOMERS

Cinergy Corp. - In June 1998, Apache contracted with Cinergy Corp. to
market substantially all the Company's natural gas production from the United
States and agreed to develop terms for the marketing of most of Apache's
Canadian production under an amended and restated gas purchase agreement
effective July 1, 1998. Apache sold its 57 percent interest in ProEnergy for
771,258 shares of Cinergy Corp. common stock, which the Company subsequently
sold for $26 million. In December 1998, Apache and Cinergy Corp. agreed to
postpone the negotiation of terms to market most of Apache's Canadian
production. Pursuant to the gas purchase agreement, ProEnergy, renamed Cinergy
Marketing and Trading LLC (Cinergy), will continue to market Apache's North
American natural gas production until June 30, 2008, with an option, following
prior notice, to terminate on June 30, 2004. During this period, Apache is
generally obligated to deliver most of its United States gas production to
Cinergy and, under certain circumstances, reimburse Cinergy if certain gas
throughput thresholds are not met. All throughput thresholds have been met. The
prices received for its gas production under this agreement approximate market
prices. As described in Note 11, Commitments and Contingencies, Apache and
Cinergy are parties to arbitration. Apache continues to market most of its U.S.
gas production through Cinergy, although the Company is actively discussing with
Cinergy its gas marketing arrangements and a resolution of its disputes.

Related Parties -- In the ordinary course of business, Apache paid to
Maralo, LLC or related entities ("Maralo") during 2002 approximately $9,000 in
revenues relating to four oil and gas wells in which Maralo owns an interest and
of which Apache is operator. Maralo paid Apache approximately $1,000 in 2002 for
Maralo's share of routine expenses relating to such wells. Also during 2002,
Maralo sub-leased certain office space from Apache, for which Maralo paid Apache
approximately $95,000. Mary Ralph Lowe, a member of

F-34

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Apache's board of directors through December 19, 2003, is president, chief
executive officer and the sole stockholder of Maralo.

In the ordinary course of business, Cimarex Energy, Co. ("Cimarex"),
formerly Key Production Company, Inc., paid to Apache during 2002 approximately
$2 million for Cimarex's proportionate share of drilling and workover costs,
mineral interests and routine expenses relating to oil and gas wells in which
Cimarex owns interests and of which Apache is the operator. Cimarex was paid
approximately $4 million directly by Apache or related entities for its
proportionate share of revenues from wells in which Cimarex marketed its
revenues with Apache as operator. Apache paid to Cimarex during 2002
approximately $217,000 for Apache's proportionate share of drilling and workover
costs, mineral interests and routine expenses relating to oil and gas wells in
which Apache owns interests and of which Cimarex is the operator. Apache was
paid approximately $785,000 directly by Cimarex for its proportionate share of
revenues from wells in which Apache marketed its revenues with Cimarex as
operator. F. H. Merelli, a member of the Apache's board of directors, is
chairman of the board and chief executive officer of Cimarex.

In the ordinary course of business, Matador Petroleum Corporation
("Matador") paid to Apache during 2002 approximately $708,000 for Matador's
proportionate share of drilling and workover costs, mineral interests and
routine expenses relating to oil and gas wells in which Matador owns interests
and of which Apache is the operator. Matador was paid approximately $1 million
directly by Apache for its proportionate share of revenues from wells in which
Matador marketed its revenues with Apache as operator. Apache paid to Matador
during 2002 approximately $2 million for Apache's proportionate share of
drilling and workover costs, mineral interests and routine expenses relating to
oil and gas wells in which Apache owns interests and of which Matador is the
operator. Apache was paid approximately $621,000 directly by Matador for its
proportionate share of revenues from wells in which Apache marketed its revenues
with Matador as operator. Eugene C. Fiedorek, a member of the Apache's board of
directors, is a member of the board of directors of Matador.

During 2002, in the ordinary course of business, Aquila, Inc. ("Aquila")
and related companies paid to Apache approximately $33 million for natural gas
produced by Apache, primarily in Canada. Aquila was paid approximately $348,000
by Apache for gathering, transportation and compression services provided by
Aquila. Janine McArdle, Vice-President -- Oil and Gas Marketing of Apache since
October 2002, previously was employed by Aquila Europe.

Major Customers -- In 2002, purchases by Cinergy and EGPC accounted for 19
percent and 22 percent of the Company's oil and gas production revenues,
respectively. In 2001, purchases by Cinergy and EGPC accounted for 35 percent
and 17 percent of the Company's oil and gas production revenues, respectively.
In 2000, purchases by Cinergy and EGPC accounted for 26 percent and 16 percent
of the Company's oil and gas production revenues, respectively. No other
purchaser has accounted for more than 10 percent of revenues for 2002, 2001 or
2000.

Concentration of Credit Risk -- The Company's revenues are derived
principally from uncollateralized sales to customers in the oil and gas
industry; therefore, customers may be similarly affected by changes in economic
and other conditions within the industry. Apache has not experienced significant
credit losses on such sales. Sales of natural gas by Apache to Cinergy are
similarly uncollateralized. Apache sells all of its Egyptian crude oil and
natural gas to the EGPC for U.S. dollars. Deteriorating economic conditions
during 2001 and 2002 in Egypt have lessened the availability of U.S. dollars,
resulting in a one to two month delay in receipts from EGPC. Continuation of the
hard currency shortage in Egypt could lead to further delays, deferrals of
payment or non-payment in the future.

F-35

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

14. BUSINESS SEGMENT INFORMATION

Apache has five reportable segments which are primarily in the business of
crude oil and natural gas exploration and production. The accounting policies of
the segments are the same as those described in the summary of significant
accounting policies. The Company evaluates performance based on profit or loss
from oil and gas operations before income and expense items incidental to oil
and gas operations and income taxes. Apache's reportable segments are managed
separately based on their geographic locations. Financial information by
operating segment is presented below:

F-36

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

F-37

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

15. SUPPLEMENTAL OIL AND GAS DISCLOSURES (UNAUDITED)

Oil and Gas Operations -- The following table sets forth revenue and direct
cost information relating to the Company's oil and gas exploration and
production activities. Apache has no long-term agreements to purchase oil or gas
production from foreign governments or authorities.

F-38

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

- ---------------

(1) This amount reflects DD&A of capitalized costs of oil and gas proved
properties only and, therefore, does not agree with DD&A reflected on Note
14, Business Segment Information.

(2) This amount reflects amounts directly related to oil and gas producing
properties and, therefore, does not agree with severance and other taxes
reflected on Note 14, Business Segment Information.
F-39

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Costs Not Being Amortized -- The following table sets forth a summary of
oil and gas property costs not being amortized at December 31, 2002, by the year
in which such costs were incurred:

Capitalized Costs Incurred -- The following table sets forth the
capitalized costs incurred in oil and gas producing activities:

- ---------------

(1) Acquisitions include unproved costs of $70 million, $77 million and $125
million for transactions completed in 2002, 2001 and 2000, respectively.
F-40

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Capitalized Costs -- The following table sets forth the capitalized costs
and associated accumulated depreciation, depletion and amortization, including
impairments, relating to the Company's oil and gas production, exploration and
development activities:

F-41

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Oil and Gas Reserve Information -- Proved oil and gas reserve quantities
are based on estimates prepared by the Company's engineers in accordance with
guidelines established by the SEC. The Company's estimates of proved reserve
quantities of its U.S., Canadian and international properties are subject to
review by Ryder Scott Company, L.P. Petroleum Consultants, independent petroleum
engineers. Their review concentrated on those reserves that constitute a
substantial percentage of the SEC value. During 2002, 2001 and 2000, their
review covered 68 percent, 61 percent and 72 percent of the SEC value,
respectively.

There are numerous uncertainties inherent in estimating quantities of
proved reserves and projecting future rates of production and timing of
development expenditures. The following reserve data represents estimates only
and should not be construed as being exact.

As of December 31, 2002, 2001 and 2000, on a barrel of equivalent basis 28,
25 and 27 percent of our worldwide reserves, respectively, were classified as
proved undeveloped.

F-42

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Future Net Cash Flows -- Future cash inflows are based on year-end oil and
gas prices except in those instances where future natural gas or oil sales are
covered by physical contract terms providing for higher or lower amounts.
Operating costs, production and ad valorem taxes and future development costs
are based on current costs with no escalation.

The following table sets forth unaudited information concerning future net
cash flows for oil and gas reserves, net of income tax expense. Income tax
expense has been computed using expected future tax rates and giving effect to
tax deductions and credits available, under current laws, and which relate to
oil and gas producing activities. This information does not purport to present
the fair market value of the Company's oil and gas assets, but does present a
standardized disclosure concerning possible future net cash flows that would
result under the assumptions used.

- ---------------

(1) Included in the estimated future net cash flows are Canadian provincial tax
credits expected to be realized beyond the date at which the legislation,
under its provisions, could be repealed. To date, the Canadian provincial
government has not indicated an intention to repeal this legislation.

(2) Estimated future net cash flows before income tax expense, discounted at 10
percent per annum, totaled approximately $13.2 billion, $7.4 billion and
$17.7 billion as of December 31, 2002, 2001 and 2000, respectively.
F-43

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

The following table sets forth the principal sources of change in the
discounted future net cash flows:

Impact of Pricing -- The estimates of cash flows and reserve quantities
shown above are based on year-end oil and gas prices, except in those cases
where future natural gas or oil sales are covered by physical contracts at
specified prices. Price fluctuations are largely attributable to supply and
demand perceptions for natural gas and volatility in oil prices.

Under the full-cost accounting rules of the SEC, the Company reviews the
carrying value of its proved oil and gas properties each quarter on a
country-by-country basis. Under these rules, capitalized costs of proved oil and
gas properties, net of accumulated DD&A and deferred income taxes, may not
exceed the present value of estimated future net cash flows from proved oil and
gas reserves, discounted at 10 percent, plus the lower of cost or fair value of
unproved properties included in the costs being amortized, net of related tax
effects (the "ceiling"). These rules generally require pricing future oil and
gas production at the unescalated oil and gas prices at the end of each fiscal
quarter and require a write-down if the "ceiling" is exceeded. Given the
volatility of oil and gas prices, it is reasonably possible that the Company's
estimate of discounted future net cash flows from proved oil and gas reserves
could change in the near term. If oil and gas prices decline significantly, even
if only for a short period of time, it is possible that write-downs of oil and
gas properties could occur in the future.

F-44

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

16. SUPPLEMENTAL QUARTERLY FINANCIAL DATA (UNAUDITED)

- ---------------

(1) The sum of the individual quarterly net income per common share amounts may
not agree with year-to-date net income per common share as each quarterly
computation is based on the weighted average number of common shares
outstanding during that period. In addition, certain potentially dilutive
securities were not included in certain of the quarterly computations of
diluted net income per common share because to do so would have been
antidilutive.

(2) Earnings per share have been restated to reflect the 10 percent stock
dividend declared September 13, 2001, paid January 21, 2002 to shareholders
of record on December 31, 2001 and the five percent stock dividend declared
December 18, 2002, payable April 2, 2003 to shareholders of record on March
12, 2003.
F-45

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

17. SUPPLEMENTAL GUARANTOR INFORMATION

Prior to 2001, Apache Finance Australia was a finance subsidiary of Apache
with no independent operations. In this capacity, it issued approximately $270
million of publicly traded notes that are fully and unconditionally guaranteed
by Apache and, beginning in 2001, Apache North America, Inc. The guarantors of
Apache Finance Australia have joint and several liability. Similarly, Apache
Finance Canada was also a finance subsidiary of Apache and had issued
approximately $300 million of publicly traded notes that were fully and
unconditionally guaranteed by Apache.

Generally, the issuance of publicly traded securities would subject those
subsidiaries to the reporting requirements of the SEC. Since these subsidiaries
had no independent operations and qualified as "finance subsidiaries", they were
exempted from these requirements.

During 2001, Apache contributed stock of its Australian and Canadian
operating subsidiaries to Apache Finance Australia and Apache Finance Canada,
respectively. As a result of these contributions, they no longer qualify as
finance subsidiaries. As allowed by the SEC rules, the following condensed
consolidating financial statements are provided as an alternative to filing
separate financial statements.

Each of the companies presented in the condensed consolidating financial
statements is wholly owned and has been consolidated in Apache Corporation's
consolidated financial statements for all periods presented. As such, the
condensed consolidating financial statements should be read in conjunction with
the financial statements of Apache Corporation and subsidiaries and notes
thereto of which this note is an integral part.

F-46

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
FOR THE YEAR ENDED DECEMBER 31, 2002

F-47

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
FOR THE YEAR ENDED DECEMBER 31, 2001

F-48

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
FOR THE YEAR ENDED DECEMBER 31, 2000

F-49

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2002

F-50

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2001

F-51

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
FOR THE YEAR ENDED DECEMBER 31, 2000

F-52

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

CONDENSED CONSOLIDATING BALANCE SHEET
FOR THE YEAR ENDED DECEMBER 31, 2002

F-53

APACHE CORPORATION AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

CONDENSED CONSOLIDATING BALANCE SHEET
FOR THE YEAR ENDED DECEMBER 31, 2001

F-54

BOARD OF DIRECTORS

FREDERICK M. BOHEN(3)(5)
Acting Executive Vice President and
Chief Operating Officer,
The Rockefeller University

G. STEVEN FARRIS(1)
President, Chief Executive Officer and
Chief Operating Officer,
Apache Corporation

RANDOLPH M. FERLIC, M.D.(1)(2)
Founder and Former President,
Surgical Services of the Great Plains, P.C.

EUGENE C. FIEDOREK(2)
Private Investor, Former Managing Director,
EnCap Investments L.C.

A. D. FRAZIER, JR.(3)(5)
President and Chief Executive Officer,
Caremark Rx, Inc.

PATRICIA ALBJERG GRAHAM(4)
Charles Warren Research Professor
of the History of American Education,
Harvard University

JOHN A. KOCUR(1)(3)
Attorney at Law; Former Vice Chairman of the Board,
Apache Corporation

GEORGE D. LAWRENCE(1)(3)
Private Investor; Former Chief Executive Officer,
The Phoenix Resource Companies, Inc.

F. H. MERELLI(1)(2)
Chairman of the Board, Chief Executive Officer
and President
Cimarex Energy Co. (formerly Key Production Company, Inc.)

RODMAN D. PATTON(2)
Former Managing Director,
Merrill Lynch Energy Group

CHARLES J. PITMAN(4)
Former Regional President - Middle East/Caspian/ Egypt/India, BP Amoco plc;
Sole Member, Shaker Mountain Energy Associates, LLC

RAYMOND PLANK(1)
Chairman of the Board, Apache Corporation

JAY A. PRECOURT(4)
Chairman of the Board and Chief Executive Officer,
Scissor Tail Energy LLC
Chairman of the Board, Hermes Consolidated, Inc.

OFFICERS

RAYMOND PLANK
Chairman of the Board

G. STEVEN FARRIS
President, Chief Executive Officer and
Chief Operating Officer

MICHAEL S. BAHORICH
Executive Vice President -- Exploration and Production Technology

JOHN A. CRUM
Executive Vice President -- Eurasia and New Ventures

RODNEY J. EICHLER
Executive Vice President

ROGER B. PLANK
Executive Vice President and Chief Financial Officer

FLOYD R. PRICE
Executive Vice President and
President, Apache Canada Ltd.

LISA A. STEWART
Executive Vice President
Business Development and E&P Services

JON A. JEPPESEN
Senior Vice President

JEFFREY M. BENDER
Vice President -- Human Resources

MICHAEL J. BENSON
Vice President -- Security

THOMAS P. CHAMBERS
Vice President -- Corporate Planning

MATTHEW W. DUNDREA
Vice President and Treasurer

ROBERT J. DYE
Vice President -- Investor Relations

ERIC L. HARRY
Vice President and Associate General Counsel

P. ANTHONY LANNIE
Vice President and General Counsel

ANTHONY R. LENTINI, JR.
Vice President -- Public and International Affairs

JANINE J. MCARDLE
Vice President -- Oil and Gas Marketing

THOMAS L. MITCHELL
Vice President and Controller

JON W. SAUER
Vice President -- Tax

CHERI L. PEPER
Corporate Secretary

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(1) Executive Committee

(2) Audit Committee

(3) Management, Development & Compensation Committee

(4) Nominating Committee

(5) Stock Option Plan Committee

SHAREHOLDER INFORMATION

Stock Data

* Per share prices have been adjusted to reflect the effects of the ten percent
stock dividend in 2001 and the five percent stock dividend in 2002.

** The amounts in the chart have been adjusted to reflect the ten percent stock
dividend in 2001 and the five percent stock dividend in 2002.

The Company has paid cash dividends on its common stock for 36 consecutive years
through December 31, 2002. During 2000, the Company changed the dividend payment
schedule on its common stock from a quarterly basis to an annual basis; however,
during 2001, the Company implemented a return to a quarterly dividend payment
schedule beginning in 2002. Future dividend payments will depend upon the
Company's level of earnings, financial requirements and other relevant factors.

Apache common stock is listed on the New York and Chicago stock exchanges
(symbol APA). At December 31, 2002, the Company's shares of common stock
outstanding were held by approximately 8,000 shareholders of record and 104,000
beneficial owners. Also listed on the New York Stock Exchange are:

o the Company's 9.25% notes, due 2002
(symbol APA 02)

o Apache Finance Canada's 7.75% notes, due 2029 (symbol APA 29)

CORPORATE OFFICES
One Post Oak Central
2000 Post Oak Boulevard
Suite 100
Houston, Texas 77056-4400
(713) 296-6000

INDEPENDENT PUBLIC ACCOUNTANTS
Ernst & Young LLP
Five Houston Center
1401 McKinney Street, Suite 1200
Houston, Texas 77010-2007

STOCK TRANSFER AGENT AND REGISTRAR
Wells Fargo Bank Minnesota, N.A.
Attn: Shareowner Services
P.O. Box 64854
South St. Paul, Minnesota 55164-0854
(651) 450-4064 or (800) 468-9716

Communications concerning the transfer of shares, lost certificates, dividend
checks, duplicate mailings or change of address should be directed to the stock
transfer agent.

DIVIDEND REINVESTMENT PLAN
Shareholders of record may invest their dividends automatically in additional
shares of Apache common stock at the market price. Participants may also invest
up to an additional $5,000 in Apache shares each quarter through this service.
All bank service fees and brokerage commissions on purchases are paid by Apache.
A prospectus describing the terms of the Plan and an authorization form may be
obtained from the Company's stock transfer agent, Wells Fargo Bank Minnesota,
N.A.

ANNUAL MEETING
Apache will hold its annual meeting of shareholders on Thursday, May 1, 2003, at
10 a.m. in the Ballroom, Doubletree Hotel at Post Oak, 2001 Post Oak Boulevard,
Houston, Texas. Apache plans to web cast the annual meeting live; connect
through the Apache web site: http://www.apachecorp.com.

STOCK HELD IN "STREET NAME"
The Company maintains a direct mailing list to ensure that shareholders with
stock held in brokerage accounts receive information on a timely basis.
Shareholders wanting to be added to this list should direct their requests to
Apache's Public and International Affairs Department, 2000 Post Oak Boulevard,
Suite 100, Houston, Texas, 77056-4400, by calling (713) 296-6157 or by
registering on Apache's web site: http://www.apachecorp.com.

FORM 10-K REQUEST
Shareholders and other persons interested in obtaining, without cost, a copy of
the Company's Form 10-K filed with the Securities and Exchange Commission may do
so by writing to Cheri L. Peper, Corporate Secretary, 2000 Post Oak Boulevard,
Suite 100, Houston, Texas, 77056-4400.

INVESTOR RELATIONS
Shareholders, brokers, securities analysts or portfolio managers seeking
information about the Company are welcome to contact Robert J. Dye, Vice
President of Investor Relations, at (713) 296-6662.

Members of the news media and others seeking information about the Company
should contact Apache's Public and International Affairs Department at (713)
296-6107.

WEB SITE: http://www.apachecorp.com

INDEX TO EXHIBITS

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* Filed herewith.

+ Management contracts or compensatory plans or arrangements required to be
filed herewith pursuant to Item 15 hereof.