Attached files
| file | filename |
|---|---|
| 10-K - FORM 10-K - Oasis Petroleum Inc. | h80310e10vk.htm |
| EX-23.1 - EX-23.1 - Oasis Petroleum Inc. | h80310exv23w1.htm |
| EX-23.3 - EX-23.3 - Oasis Petroleum Inc. | h80310exv23w3.htm |
| EX-31.2 - EX-31.2 - Oasis Petroleum Inc. | h80310exv31w2.htm |
| EX-32.1 - EX-32.1 - Oasis Petroleum Inc. | h80310exv32w1.htm |
| EX-32.2 - EX-32.2 - Oasis Petroleum Inc. | h80310exv32w2.htm |
| EX-23.2 - EX-23.2 - Oasis Petroleum Inc. | h80310exv23w2.htm |
| EX-21.1 - EX-21.1 - Oasis Petroleum Inc. | h80310exv21w1.htm |
| EX-31.1 - EX-31.1 - Oasis Petroleum Inc. | h80310exv31w1.htm |
| EX-10.12 - EX-10.12 - Oasis Petroleum Inc. | h80310exv10w12.htm |
Exhibit 99.1
| degolyer and macnaughton 5OO I spring valley road suite 8OO east dallas, texas 75244 This is a digital representation of a DeGolyer and MacNaughton report. Each file contained herein is intended to be a manifestation of certain data in the subject report and as such is subject to the definitions, qualifications, explanations, conclusions, and other conditions thereof. The information and data contained in each file may be subject to misinterpretation; therefore, the signed and bound copy of this report should be considered the only authoritative source of such information. |
| Degolyer and Macnaughton 5OO 1 Spring Valley Road Suite 8OO East Dallas, Texas 75244 January 19, 2011 Oasis Petroleum Inc. First City Tower 1001 Fannin, Suite 1500 Houston, Texas 77002 Gentlemen: Pursuant to your request, we have prepared estimates of the extent and value of the net proved crude oil, condensate, and natural gas reserves, as of December 31, 2010, of certain selected properties owned by Oasis Petroleum Inc. (Oasis). Oasis has represented that these properties account for 100 percent on a million cubic feet net equivalent basis of Oasis’s net proved reserves as of December 31, 2010. The net proved reserves estimates prepared by us have been prepared in accordance with the reserves definitions of Rules 4-10(a) (l)-(32) of Regulation S-X of the Securities and Exchange Commission (SEC) of the United States. Reserves included herein are expressed as net reserves. Gross reserves are defined as the total estimated petroleum to be produced from these properties after December 31, 2010. Net reserves are defined as that portion of the gross reserves attributable to the interests owned by Oasis after deducting all interests owned by others. Data used in this evaluation were obtained from reviews with Oasis personnel, Oasis files, from records on file with the appropriate regulatory agencies, and from public sources. In the preparation of this report we have relied, without independent verification, upon such information furnished by Oasis with respect to property interests, production from such properties, current costs of operation and development, current prices for production, agreements relating to current and future operations and sale of production, and various other information and data that were accepted as represented. A field examination of the properties was not considered necessary for the purposes of this report. |
| 2 Degolyer and Macnaughton Methodology and Procedures Estimates of reserves were prepared by the use of appropriate geologic, petroleum engineering, and evaluation principals and techniques that are in accordance with practices generally recognized by the petroleum industry as presented in the publication of the Society of Petroleum Engineers entitled “Standa rds Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information (Revision as of February 19, 2007).” The method or combination of methods used in the analysis of each reservoir was tempered by experience with similar reservoirs, stage of development, quality and completeness of basic data, and production history. When applicable, the volumetric method was used to estimate the original gas in place (OGIP) and original oil in place (OOIP). Structure and isopach maps were const ructed to estimate reservoir volume. Electrical logs, radioactivity logs, core analyses, and other available data were used to prepare these maps as well as to estimate representative values for porosity and water saturation. When adequate data were available and when circumstances justified, material balance and other engineering methods were used to OGIP or OOIP. Estimates of ultimate recovery were obtained after applying recovery factors to OGIP or OOIP. These recovery factors were based on consideration of the type of energy inherent in the reservoirs, analyses of the petroleum, the structural positions of the properties, and the production histories. When applicable, material balance and other engineering methods were used to estimate recovery factors. An analysis of reservoir performance, including production rate, reservoir pressure, and gas-oil ratio behavior, was used in the estimation of reserves. For depletion-type reservoirs or those whose performance disclosed a reliable decline in producing-rate trends or other diagnostic characteristics, reserves were estimated by the application of appropriate decline curves or other performance relationships. In the analyses of production-decline curves, reserves were estimated only to the limits of economic production or to the limit of the production licenses as appropriate. |
| Degolyer and Macnaughton Definition of Reserves Petroleum reserves estimated by us included in this report are classified as proved. Only proved reserves have been evaluated for this report. Reserves classifications used by us in this report are in accordance with the reserves definitions of Rules 4-10(a) (l)-(32) of Regulation S-X of the SEC. Reserves a re judged to be economically producible in future years from known reservoirs under existing economic and operating conditions and assuming continuation of current regulatory practices using conventional production methods and equipment. In the analyses of production-decline curves, reserves were estimated only to the limit of economic rates of production under existing economic and operating conditions using prices and costs consistent with the effective date of this report, including consideration of chan ges in existing prices provided only by contractual arrangements but not including escalations based upon future conditions. The petroleum reserves are classified as follows: Proved oil and gas reserves ~ Proved oil and gas reserves are those quantities of oil and gas, which, by analysis of geoscience and engineering data, can be estimated with reasonable certainty to be economically producible—from a given date forward, from known reservoirs, and under existing economic conditions, operating methods, and government regulations—prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain, regardless of whether deterministic or probabilistic methods are used for the estimation. The project to extract the hydrocarbons must have commenced or the operator must be reasonably certain that it will commence the project within a reasonable time. (i) The area of the reservoir considered as proved includes: (A) The area ident ified by drilling and limited by fluid contacts, if any, and (B) Adjacent undrilled portions of the reservoir that can, with reasonable certainty, be judged to be continuous with it and to contain economically producible oil or gas on the basis of available geoscience and engineering data. (ii) In the absence of data on fluid contacts, proved quantities in a reservoir are limited by the lowest known hydrocarbons (LKH) as seen in a well penetration unless geoscience, |
| Degolyer and Macnaughton engineering, or performance data and reliable technology establishes a lower contact with reasonable certainty. (iii) Where direct observation from well penetrations has defined a highest known oil (HKO) elevation and the potential exists for an associated gas cap, proved oil reserves may be assigned in the structurally higher portions of the reservoir only if geoscience, engineering, or performance data and reliable technology establish the higher contact with reasonable certainty. (iv) Reserves which can be produced economically through application of improved recovery techniques (including, but not limited to, fluid injection) are included in the proved classification when: (A) Successful testing by a pilot project in an area of the reservoir with properties no more favorable than in the reservoir as a whole, the operation of an installed program in the reservoir or an analogous reservoir, or other evidence using reliable technology establishes the reasonable certainty of the engineering analysis on which the project or program was based; and (B) The project has been approved for development by all necessary parties and entities, including governmental entities. (v) Existing economic conditions include prices and costs at which economic producibility from a reservoir is to be determined. The price shall be the average price during the 12-month period prior to the ending date of the period covered by the report, determined as an unweighted arithmetic average of the first-day-of-the-month price for each month within such period, unless prices are defined by contractual arrangements, excluding escalations based upon future conditions. Developed oil and gas reserves — Developed oil and gas reserves are reserves of any category that can be expected to be recovered: (i) Through existing wells with existing equipment and operating methods or in which the cost of the required |
| Degolyer and Macnaughton equipment is relatively minor compared to the cost of a new well; and (ii) Through installed extraction equipment and infrastructure operational at the time of the reserves estimate if the extraction is by means not involving a well. Undeveloped oil and gas reserves — Undeveloped oil and gas reserves are reserves of any category that ar e expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion. (i) Reserves on undrilled acreage shall be limited to those directly offsetting development spacing areas that are reasonably certain of production when drilled, unless evidence using reliable technology exists that establishes reasonable certainty of economic producibility at greater distances. (ii) Undrilled locations can be classified as havin g undeveloped reserves only if a development plan has been adopted indicating that they are scheduled to be drilled within five years, unless the specific circumstances justify a longer time. (iii) Under no circumstances shall estimates for undeveloped reserves be attributable to any acreage for which an application of fluid injection or other improved recovery technique is contemplated, unless such techniques have been proved effective by actual projects in the same reservoir or an analogous reservoir , as defined in [section 210.4-10 (a) Definitions], or by other evidence using reliable technology establishing reasonable certainty. The development status shown herein represents the status applicable on December 31, 2010. In the preparation of this study, data available from wells drilled on the appraised properties through December 31, 2010, were used in estimating gross ultimate recovery. When applicable, gross production estimated to December 31, 2010, was deducted from g ross ultimate recovery to arrive at the estimates of gross reserves as of December 31, 2010. Production data through December 2010 were available for most properties. |
| Degolyer and Macnaughton Our estimates of Oasis’s net proved reserves attributable to the reviewed properties are based on the definitions of proved reserves of the SEC and are as follows, expressed in thousands of barrels (Mbbl), millions of cubic feet (MMcf), and thousands of barrels of oil equivalent (Mboe): | | | { Estimated by DeGolyer and MacNaughton } { Net P roved Reserves } { as of } { December 31, 2010 } Oil and Natural Condensate Gas Oil Equivalent (Mbbl) (MMcf) (Mboe) | | | Properties reviewed by DeGolyer and MacNaughton Proved Producing 15,650 8,208 17,018 Proved Undeveloped 20,900 11,171 22,762 —— —— —— Total Proved 36,550 19,379 39,780 Note: Gas is converted to oil equivalent using a factor of 6,000 cubic feet of gas per 1 barrel of oil equivalent. Primary Economic Assumptions Revenue values in this report are e xpressed in terms of estimated future gross revenue, future net revenue, and present worth of future net revenue. These values are based on the continuation of prices in effect on December 31, 2010. Future gross revenue is defined as that revenue to be realized from the production and sale of the estimated net reserves. Future net revenue is calculated by deducting estimated production taxes, ad valorem taxes, operating, gathering, processing expenses, and capital costs from the future gross revenue. P resent worth of future net revenue is calculated by discounting the future net revenue at the arbitrary rate of 10 percent per year compounded monthly over the expected period of realization. Revenue values in this report were estimated using the initial prices and expenses provided by Oasis. Future prices were estimated using guidelines established by the SEC and the Financial Accounting Standards Board (FASB). The prices used in this report are based on SEC guidelines. The assumptions used for estima ting future prices and expenses are as follows: |
| Degolyer and Macnaughton Oil and Condensate Prices Oasis has represented that the oil and condensate prices were based on a 12-month average price (reference price), calculated as the unweighted arithmetic average of the first-day-of-the-month price for each month within the 12-month period prior to the end of the reporting period, unless prices are defined by contractua l arrangements. Oasis supplied differentials by field to a West Texas Intermediate reference price of $79.40 per barrel and the prices were held constant thereafter. The volume-weighted average price was $69,10 per barrel. Natural Gas Prices Oasis has represented that the natural gas prices were based on a reference price, calculated as the unweighted arithmetic average of the first-day-of-the-month price for each month within the 12-month period prior to the end of the reporting period, unless prices are d efined by contractual arrangements. The gas prices were calculated for each property using differentials to the Henry Hub reference price of $4.38 per Mcf furnished by Oasis and held constant thereafter. The volume-weighted average price was $4.90 per Mcf. Operating Expenses and Capital Costs Operating expenses and capital costs, based on information provided by Oasis, were used in estimating future costs required to operate the properties. In certain cases, future costs, either higher or lower than existin g costs, may have been used because of anticipated changes in operating conditions. These costs were not escalated for inflation. |
| Degolyer and Macnaughton The estimated future revenue and expenditures attributable to the production and sale Oasis’s net proved reserves of the properties appraised, as of December 31, 2010, are as follows, expressed in thousands of dollars (M$): | | | | { Proved } Developed Developed Total Producing Nonproducing Undeveloped Proved | | | | Future Gross Revenu e, M$ 1,121,121 0 1,499,409 2,620,530 Production Tax, M$ 121,489 0 164,600 286,089 Ad Valorem Tax, M$ 5,285 0 4,156 9,441 Operating Expenses, M$ 232,233 0 169,127 401,360 Investment Costs, M$ 0 0 349,083 349,083 Abandonment Costs, M$ 8,605 0 4,640 13,245 Future Net Revenue, M$ 753,509 0 807,803 1,561,312 Present Worth at 10 Percent, M$ 412,466 0 285,354 697,820 Note: Future income taxes have not been taken into account in the preparation of these estimates. Estimates of natural gas reserves and future net r evenue should be regarded only as estimates that may change as further production history and additional information become available. Not only are such reserves and revenue estimates based on that information which is currently available, but such estimates are also subject to the uncertainties inherent in the application of judgmental factors in interpreting such information. While the oil and gas industry may be subject to regulatory changes from time to time that could affect an industry participant 6;s ability to recover its oil and gas reserves, we are not aware of any such governmental actions which would restrict the recovery of the December 31, 2010, estimated oil and gas volumes. The reserves estimated in this report can be produced under current regulatory guidelines. In our opinion, the information relating to estimated proved reserves, estimated future net revenue from proved reserves, and present worth of estimated future net revenue from proved reserves of oil, condensate, natural gas l iquids, and gas contained in this report has been prepared in accordance with Paragraphs 932-235-50-4, 932-235-50-6 through 932-235-50-9, 932-235-50-30, and 932-235-50-31(a), (b), and (e) of the Accounting Standards Update 932-235-50, Extractive Industries — Oil and Gas (Topic 932): Oil and Gas Reserve Estimation and Disclosures (January 2010) of the Financial Accounting Standards Board and Rules 4-10(a) (l}-(32) of Regulation S-X and Rules 302{b), 1201, 1202(a) (1), (2), (3), (4), (8), and 1203(a) of Regulation S-K of the Securities |
| 9
DeGolyer and MacNaughton
and Exchange Commission; provided, however, future income tax expenses have not been
taken into account in estimating the future net revenue and present worth values set forth
herein.
To the extent the above-enumerated rules, regulations, and statements require
determinations of an accounting or legal nature, we, as engineers, are necessarily unable
to express an opinion as to whether the above-described information is in accordance
therewith or sufficient therefor,
DeGolyer and MacNaughton is an independent petroleum engineering consulting firm that
has been providing petroleum consulting services throughout the world for over 70 years.
DeGolyer and MacNaughton does not have any financial interest, including stock ownership, in
Oasis. Our fees were not contingent on the results of our evaluation. This letter report has
been prepared at the request of Oasis. DeGolyer and MacNaughton has used all assumptions,
data, procedures, and methods that it considers necessary and appropriate to prepare this
report.
Submitted,
DeGOLYER and MacNAUGHTON
Texas Registered Engineering Firm F-716
Paul J. Szatkowski, P.E. Senior Vice President DeGolyer and MacNaughton |
| DeGolyer and MacNaughton
CERTIFICATE of QUALIFICATION
I, Paul J. Szatkowski, Petroleum Engineer with DeGolyer and MacNaughton, 5001 Spring Valley
Road, Suite 800 East, Dallas, Texas, 75244 U.S.A., hereby certify:
1. That I am a Senior Vice President with DeGolyer and MacNaughton, which
company did prepare the letter report addressed to Oasis dated January 19,
2011, and that I, as Senior Vice President, was responsible for the
preparation of this report.
2. That I attended Texas A&M University, and that I graduated with a
Bachelor of Science degree in Petroleum Engineering in the year 1974; that I
am a Registered Professional Engineer in the State of Texas; that I am a
member of the International Society of Petroleum Engineers and the
American Association of Petroleum Geologists; and that I have in excess of
36 years of experience in oil and gas reservoir studies and reserves
evaluations.
Paul J. Szatkowski, P.E. Senior Vice President DeGolyer and MacNaughton |