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SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

For the Fiscal year ended December 31, 2002

OR

Commission File Number 1-13884

COOPER CAMERON CORPORATION

(Exact name of Registrant as specified in its charter)

Registrant’s telephone number, including area code (713) 513-3300

SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

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 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 the Registrant’s knowledge, in a definitive proxy or information statement incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Act) Yes x    No ¨

The aggregate market value of the Common Stock, par value $0.01 per share, held by non-affiliates of Registrant as of June 30, 2002, our most recently completed second fiscal quarter, was approximately $1,727,207,881. For the purposes of the determination of the above statement amount only, all directors and executive officers of the Registrant are presumed to be affiliates. The number of shares of Common Stock, par value $.01 per share, outstanding as of March 14, 2003 was 54,645,343.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of Registrant’s Annual Report to Stockholders for 2002 are incorporated by reference into Part II.

Portions of Registrant’s 2003 Proxy Statement for the Annual Meeting of Stockholders to be held

May 8, 2003 are incorporated by reference into Part III.

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TABLE OF CONTENTS

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PART I

ITEM 1.    BUSINESS.

Cooper Cameron Corporation (“Cooper Cameron” or the “Company”) is a leading international manufacturer of oil and gas pressure control equipment, including valves, wellheads, controls, chokes, blowout preventers and assembled systems for oil and gas drilling, production and transmission used in onshore, offshore and subsea applications. Cooper Cameron is also a leading manufacturer of centrifugal air compressors, integral and separable gas compressors and turbochargers.

Cooper Cameron’s business of manufacturing petroleum production equipment and compression and power equipment began in the mid-1800s with the manufacture of steam engines that provided power for plants and textile or rolling mills. By 1900, with the discovery of oil and gas, Cooper Cameron’s predecessors moved into the production of natural gas internal combustion engines and gas compressors. Product offerings were added by the Company’s predecessors through various acquisitions, in particular the acquisitions of The Bessemer Gas Engine Company (gas engines and compressors); Pennsylvania Pump and Compressor (reciprocating air and gas compressors); Ajax Iron Works (compressors); Superior (engines and compressors); Joy Petroleum Equipment Group (valves, couplings and wellheads); Joy Industrial Compressor Group (compressors); and Cameron Iron Works (blowout preventers, ball valves, control equipment and McEvoy-Willis wellhead equipment and choke valves).

Cooper Cameron, a Delaware corporation, was incorporated on November 10, 1994. The Company operated as a wholly-owned subsidiary of Cooper Industries, Inc. (“Cooper”) until June 30, 1995, the effective date of the completion of an exchange offer with Cooper’s stockholders resulting in the Company becoming a separate stand-alone company. The common stock of Cooper Cameron trades on the New York Stock Exchange under the symbol “CAM”.

In 1998, the Company acquired Orbit Valve International, Inc. (“Orbit^®”). Orbit became part of the Cooper Cameron Valves organization. Orbit manufactures and sells high-performance valves and actuators for the oil and gas and petrochemical industries. Orbit’s primary manufacturing facility is located in Little Rock, Arkansas with a sales, marketing, assembly, test and warehousing base at Livingston, Scotland in the United Kingdom.

During 1999, the Company sold its rotating compressor product line business to Rolls-Royce plc for approximately $200 million. The operations that were sold had primary facilities in Liverpool, United Kingdom, Hengelo in the Netherlands and Mt. Vernon, Ohio.

In January 2001, the Company decided to exit the market for new Superior brand natural gas engines and close its Springfield, Ohio manufacturing facility. Manufacturing operations at this facility were discontinued in the first half of 2001.

In September 2002, the Company acquired certain assets of Stewart and Stevenson’s Petroleum Equipment Segment, providing a combination of product line additions and cost savings opportunities within the Cameron division. In December 2002, the Company acquired Nutron Industries, a valve manufacturer based in Edmonton, Canada. This acquisition expands the product offerings of the Cooper Cameron Valves division, and provides opportunities to grow sales outside the United States, particularly in Canada.

Business Segments

Markets and Products

The Company’s operations are organized into three separate business segments, which are Cameron, Cooper Cameron Valves and Cooper Compression, each of which conducts business as a division of the Company. For

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additional business segment information for each of the three years in the period ended December 31, 2002, see Note 13 of the Notes to Consolidated Financial Statements, which Notes are incorporated herein by reference in Part II, Item 8 hereof (“Notes to Consolidated Financial Statements”).

Cameron Division

Cameron is a leading provider of systems and equipment used to control pressures and direct flows of oil and gas wells. Its products are employed in a wide variety of operating environments including basic onshore fields, highly complex onshore and offshore environments, deepwater subsea applications and ultra-high temperature geothermal operations.

Cameron is a global supplier of integrated drilling systems for land, offshore platform and subsea applications. Cameron’s products include surface and subsea production systems, blowout preventers, drilling and production control systems, gate valves, actuators, chokes, wellheads, drilling riser and aftermarket parts and services. Cameron’s products are marketed under the brand names Cameron^®, W-K-M^®, McEvoy^® and Willis^®. Additionally, Cameron manufacturers elastomers, which are used in pressure and flow control equipment, other petroleum industry applications as well as in the petroleum, petrochemical, rubber molding and plastics industries.

Cameron’s aftermarket program, CAMSERV^™, combines traditional aftermarket services and products, such as equipment maintenance and reconditioning, with Cameron’s information technology toolset. CAMSERV’s services are designed to provide flexible, cost-effective solutions to customer aftermarket needs throughout the world. Cameron also provides an inventory of repair parts, service personnel, planning services and inventory and storage of customers’ idle equipment. During the last couple of years, Cameron has continued to enhance its aftermarket presence worldwide with new facilities in Saudi Arabia, Macae, Brazil and Malabo, Equatorial Guinea along with a world-class CAMSERV facility scheduled for completion in early 2003 in Luanda, Angola.

As petroleum exploration activities have increasingly focused on subsea locations, Cameron directed much of its new product development efforts toward this market. Cameron’s patented SpoolTree^™ horizontal subsea production system, which was introduced in 1993, is used in oil and gas fields with subsea completions that require frequent retrieval of downhole equipment. With the SpoolTree system, well completion and workover activities can be performed without a workover riser or removal of the Christmas tree and under conventional blowout preventer control, thereby reducing the time, equipment and expense needed to perform such activities.

The Cameron Willis Chokes business unit was formed to focus resources on the choke product line with the goal of enhancing Cameron’s performance in this product line. Cameron Willis manufactures Cameron and Willis brand chokes and Cameron brand actuators for the surface and subsea production markets. The Company’s primary choke manufacturing operations have now been consolidated into its Longford, Ireland facility with surface gate valve actuator manufacturing primarily performed at the Cameron Willis plant in Houston, Texas, which commenced operations in an expanded facility in March 2002.

In 1998, Cameron opened a new research center in Houston, Texas that has ten specially designed test bays to test and evaluate Cameron’s products under realistic conditions. These include environmental test chambers to simulate extreme pressures and temperatures, high-strength fixtures for the application of multi-million pound tensile and bending loads, high pressure gas compressors and test enclosures, a hyperbaric chamber to simulate the external pressures of deep water environments, and two circulation loops for erosion and flow testing.

During 2001, Cameron reorganized to address the growing market for system-level subsea projects, in which clients entrust their suppliers with more responsibility to deliver complete systems. The Offshore Systems organization was created expressly for such projects and provides concept design, systems engineering, and project management for offshore projects.

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During 2002, Cameron introduced a new Environmental Safe Guard (ESG^™) system which combines a traditional surface blowout preventer with a subsea device (the ESG unit) at the bottom of the drilling string. This allows operators to use the less expensive second- or third-generation semisubmersible rigs, instead of fourth- or fifth-generation units, to drill in deepwater locales.

Also in 2002, Cameron Controls was reorganized, with drilling controls merging with Cameron’s Drilling organization, and production and workover controls merging with the Offshore Systems organization. Cameron’s two primary controls manufacturing assembly and testing facilities are located in Celle, Germany and Houston, Texas.

Cameron primarily markets its products directly to end-users through a worldwide network of sales and marketing employees, supported by agents in some international locations. Due to the technical nature of many of the products, the marketing effort is further supported by a staff of engineering employees. The balance of Cameron’s products are sold through established independent distributors.

Cameron’s primary customers include oil and gas majors, independent producers, engineering and construction companies, drilling contractors, rental companies and geothermal energy producers.

Cooper Cameron Valves Division

Cooper Cameron Valves (CCV) is a leading provider of valves and related systems primarily used to control pressures and direct the flow of oil and gas as they are moved from individual wellheads through flow lines, gathering lines and transmission systems to refineries, petrochemical plants and industrial centers for processing. Large diameter valves are used primarily in natural gas transmission lines. Smaller valves are used in oil and gas gathering and processing systems and in various types of industrial processes in refineries and petrochemical plants. Equipment used in these environments is generally required to meet demanding API 6D and American National Standards Institute (ANSI) standards.

CCV’s products include gate valves, ball valves, butterfly valves, Orbit valves, rotary process valves, block & bleed valves, plug valves, globe valves, check valves, actuators, chokes and aftermarket parts and services. These products are marketed under the brand names Cameron^®, W-K-M^®, Orbit^®, Demco^®, Foster^®, Thornhill Craver^™, TriAx^® and TruSeal^®. During the first quarter of 2000, CCV expanded its field service capabilities with the acquisition of Valve Sales Inc., a Houston-based valve repair and manufacturing company. CCV’s aftermarket business is known as VALVSERV. As described previously, Nutron, a Canadian valve manufacturer was acquired in December 2002 in order to further expand CCV’s product offerings, particularly in Canada.

CCV markets its equipment and services through a worldwide network of combined sales and marketing employees, distributors and agents in selected international locations. Due to the technical nature of many of the products, the marketing effort is further supported by a staff of engineering employees.

CCV’s primary customers include oil and gas majors, independent producers, engineering and construction companies, pipeline operators, drilling contractors and major chemical, petrochemical and refining companies.

Cooper Compression Division

Cooper Compression was created in 2002 through the combination of Cooper Energy Services (CES) and Cooper Turbocompressor (CTC). The business is divided into Reciprocating Technology, which encompasses the products and services historically provided by CES, and Centrifugal Technology, which encompasses the air compression markets traditionally served by CTC.

Cooper Compression is a leading provider of reciprocating and centrifugal technology, including reciprocating compression equipment and related aftermarket parts and services for the energy industry. Cooper

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Compression’s products include aftermarket parts and services, integral reciprocating engine-compressors, reciprocating compressors, turbochargers, control systems, integrally geared centrifugal compressors, compressor systems and controls. Its aftermarket services include spare parts, technical services, repairs, overhauls and upgrades. Its Compression Solutions^™ services include rental compressors, air-over-the-fence (long-term contracts to purchase compressed air) and air system audits.

Cooper Compression’s products and services are marketed under the Ajax^®, Superior^®, Cooper-Bessemer^® (Reciprocating Products), Penn^™, PPC^®, Enterprise^™, Texcentric^®, Nickles Industrial^™, Turbine Specialties^™, Turbo Air^®, Genuine Joy^® (aftermarket parts only), Dry Pak^™, Turboblend^®, TA^™ and MSG^® (centrifugal products) brand names. Cooper Compression provides global support for its products and maintains sales and/or service offices in key international locations.

Reciprocating Technology

Cooper Compression provides Ajax integral engine-compressors (140 to 880 horsepower), which combine the engine and compressor on a single drive shaft and are used for gas re-injection and storage, as well as smaller gathering and transmission lines. In addition, a line of rotary screw compressors powered by natural gas engines and electric motor drives was added in 1997. A proprietary 1,150 psi high-pressure rotary screw system was introduced in 1999.

Superior reciprocating compressors (200 to 9,000 horsepower) are used primarily for natural gas applications, including production, storage, withdrawal, processing and transmission, as well as petrochemical processing. The Superior WG compressor series was introduced in 2000 for large project applications up to 9,000 horsepower. These high-speed separable compressor units can be matched with either natural gas engine drivers or electric motors and provide a cost advantage over competitive equipment in the same power range.

There is an installed base of Cooper-Bessemer, Penn, Enterprise, Superior, Ajax and Joy engines and compressors (up to 30,000 horsepower) for which Cooper Compression provides replacement parts and service on a worldwide basis.

In 1999, sales of new compression equipment domestically was begun through a network of independent distributors rather than on a direct basis to the end user. These distributors have to date been offered varying levels of pricing and support depending on their volume of purchases and whether the products purchased are for their own rental fleets or for resale. The network of distributors for domestic compression equipment was completed in mid-2000. Cooper Compression continues to sell its compression equipment internationally directly to end users through a network of sales and marketing employees supported by agents in some locations.

In addition to the previously described sale of the rotating business, Cooper Compression has undergone a significant level of restructuring to enhance the productivity of its manufacturing processes. The closing of the Grove City, Pennsylvania plant and foundry was completed in 2000. Most of the activity previously conducted at that location was outsourced to third parties or relocated to other facilities. In 2001, the relocation of the central warehouse from Mt. Vernon, Ohio to Houston, Texas was completed. The 2001 acquisitions of Nickles Industrial and Turbine Specialties Inc. allowed Cooper Compression to expand its aftermarket business into servicing compression and power equipment from other manufacturers.

As part of its restructuring, Cooper Compression has constructed the new Superior separable compressor plant and research and development center in Waller, Texas. Each manufacturing station in the new plant is designed for short cycle, just-in-time machining and assembly to reduce inventory requirements and product lead times. The plant is designed to manufacture the division’s complete line of Superior compressor units to serve the natural gas market. The relocation of the existing compressor plant in Mt. Vernon, Ohio to the new Waller facility was completed in the first half of 2001.

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In January 2001, the decision to exit the market for new Superior brand natural gas engines, including its 2400 engine line, and to close the Springfield, Ohio engine plant was announced. This shutdown was substantially completed by the end of the second quarter of 2001.

Cooper Compression continued its restructuring efforts in 2002 with the fourth quarter decision to close an additional 13 facilities worldwide in order to properly size the business with respect to current market conditions.

Cooper Compression’s primary customers in reciprocating technology include gas transmission companies, compression leasing companies, oil and gas producers and processors and independent power producers.

Centrifugal Technology

Cooper Compression also manufactures and supplies integrally geared centrifugal compressors, compressor systems and controls to customers around the world. Additionally, it offers complete aftermarket services and Compression Solutions, including rental compressors, air-over-the-fence and air system audits. Centrifugal air compressors, used primarily in manufacturing processes, are sold under the trade name of Turbo Air, with specific models including the TA-2000, TAC-2000, TA-3000, TA-6000, TA-11000 and TA-20000. Engineered Compressors are used in the process air and gas markets and are identified by the trade names of TA and MSG.

The process and plant air centrifugal compressors deliver oil-free compressed gas to the customer, thus preventing oil contamination of the finished products. Worldwide customers increasingly prefer oil-free air for quality, safety, operational and environmental reasons.

Cooper Compression provides installation and maintenance service, labor, parts, repairs, overhauls and upgrades to its worldwide customers for plant air and process gas compressors. It also provides aftermarket service and repairs on all equipment it produces through a worldwide network of distributors, service centers and field service technicians utilizing an extensive inventory of parts, including Genuine Joy parts.

Cooper Compression’s customers in centrifugal technology are petrochemical and refining companies, natural gas processing companies, durable goods manufacturers, utilities, air separation and chemical companies and industrial manufacturing companies with a specific focus on automotive, glass, textile, electronics, food, container, beverage, pharmaceutical and other companies that require reliable air compressors.

Market Issues

Cooper Cameron, through its segments, is a leader in the global market for petroleum production equipment. Cooper Cameron believes that it is well positioned to serve these markets. Plant and service center facilities around the world in major oil-producing regions provide a broad, global breadth of market coverage.

The international market continues to be a source of growth for Cooper Cameron. The desire to expand oil and gas resources and transmission capacity in developed and developing countries, for both economic and political reasons, continues to be a major factor affecting market demand. Additionally, establishment of industrial infrastructure in the developing countries will necessitate the growth of basic industries that require plant air and process compression equipment. Production and service facilities in North and South America, Europe, the Far East and West Africa provide the Company with the ability to serve the global marketplace.

In each of Cooper Cameron’s business segments, a large population of installed engines, compression equipment, and oil and gas production equipment exists in both the U.S. and international market segments. The rugged, long-lived nature of the equipment that exists in the field provides a relatively stable repair parts and service business. The Company expects that as increasing quantities of new units are sold into the international markets, there will be a continuing growth opportunity in market demand for aftermarket parts and service.

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G eographic Breakdown of Revenues

Revenues for the year ended December 31, 2002 were generated from shipments to the following regions of the world (dollars in thousands):

New Product Development

Several new drilling products have been introduced by Cameron since 1998. These new products include the 3.5 million-pound load capacity LoadKing^™ riser system, used for drilling in up to 10,000-foot water depths; a new lightweight and lower-cost locking mechanism for subsea BOPs; and a new generation of variable-bore ram packers. Additionally, Cameron’s Freestanding Drilling Riser, introduced in 1999, was a winner of the Petroleum Engineer International Special Meritorious Award for Engineering Innovation. During 2002, Cameron’s new Environmental Safe Guard system received World Oil^® magazine’s prestigious “Next Generation” award as “Best Drilling/Completion Solution.”

During 2002, Cameron marked the tenth anniversary of its introduction of the patented SpoolTree^™ subsea production system, a tree design referred to generically as a horizontal subsea tree. The SpoolTree has received numerous awards for its advanced technology and innovation, was recognized for its contributions to the industry at the Offshore Technology Conference in Houston during May 2002, and resulted in Cameron receiving the prestigious Queen’s Award for Enterprise in the U.K. A Cameron SpoolTree was installed in 2002 at a new world record depth of 7,209 feet in Marathon’s Camden Hill field in the Gulf of Mexico.

Several new controls products have been added since 1997. Cameron launched a new electro-hydraulic drilling control system in 1997 and a new subsea production control system in 1998. In 2001, the Company expanded the CAMTROL system to include all of Cameron’s controls capabilities, including production, drilling and workover. In May 2002, Cameron enhanced its production controls offering by upgrading the controllers and software. These improvements follow the CAMTROL design philosophies of modularity and redundancy.

In 2000, CCV completed the development of a range of 2” to 16” ball valves capable of performing at pressures of 10,000 psi and in water depths of 10,000 feet.

Cooper Compression has focused product development resources to further expand its high efficiency plant air compressor line and to provide engineered compressors matched to the requirements of its customers. The latter is being achieved by advances in aerodynamic and rotor dynamic analytical design capability. The year 2001 saw the addition of centrifugal gas applications.

Through the introduction of its new compressor frames, Cooper Compression’s standard product range was extended up to 2,500 horsepower, positioning itself as a viable supplier of turbo plant air compressors in a wide range of horsepowers. One of the new products, the TAC-2000, for which patents have been applied, is the only air-cooled, packaged centrifugal compressor on the market today. This compressor won 2001’s Silver Award for Product of the Year from Plant Engineering magazine. In 2001, remote monitoring was added to the control system capabilities. The new Vantage Controller is available as an upgrade kit for both proprietary and competitor compressors.

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Since 2000, Cooper Compression’s product range has been expanded through the addition of new compressor frames (TA-6000, TAC-2000, TA-11000 and TA-20000) and the addition of trademarked accessories such as Dry Pak heat of compression dryers and Turboblend, a hydro-cracked turbomachinery lubricating oil. In 2001, an active aftermarket effort was begun, leveraging off of the significant base of installed equipment, the Engineered Compressor product line was redefined and the MSG Renaissance program was introduced to update the MSG product line. Also in 2001, a rental fleet, consisting of air-cooled, trailer-mounted TAC-2000 compressors was introduced and European packaging capability was established to better serve customers in the region. During 2002, Cooper Compression continued to penetrate the large markets in Western and Eastern Europe via a newly established regional office in Milan, Italy.

Competition

Cooper Cameron competes in all areas of its operations with a number of other companies, some of which have financial and other resources comparable to or greater than those of Cooper Cameron.

Cooper Cameron has a leading position in the petroleum production equipment markets, particularly with respect to its high-pressure products. In these markets, Cooper Cameron competes principally with Balon Corporation, Circor, Dril-Quip, Inc., Dresser Valve, FMC Technologies, Inc., Hydril Company, Aker Kvaerner, Masterflo, Neles-Jamesbury, Varco International, Inc., Wood Group, ABB (Offshore Systems division) and Vetco Gray Inc. (a subsidiary of ABB). The principal competitive factors in the petroleum production equipment markets are technology, quality, service and price. Cooper Cameron believes several factors give it a strong competitive position in these markets. Most significant are Cooper Cameron’s broad product offering, its worldwide presence and reputation, its service and repair capabilities, its expertise in high pressure technology and its experience in alliance and partnership arrangements with customers and other suppliers.

Cooper Cameron also has a leading position in the compression equipment markets. In these markets, Cooper Cameron competes principally with the Dresser Rand Division of Ingersoll-Rand Company, Ingersoll-Rand Air Solutions Group, Demag, GHH/Borsig, Elliott Company, a division of Ebara, Ariel Corporation and Atlas-Copco AB. The principal competitive factors in the compression equipment markets are engineering and design capabilities, product performance, reliability and quality, service and price. Cooper Cameron has a very competent engineering staff and skilled technical and service representatives, with service centers located throughout the world.

Man ufacturing

Cooper Cameron has manufacturing facilities worldwide that conduct a broad variety of processes, including machining, fabrication, assembly and testing using a variety of forged and cast alloyed steels and stainless steel as the primary raw materials. In recent years, Cooper Cameron has rationalized plants and products, closed various manufacturing facilities, moved product lines to achieve economies of scale, and upgraded the remaining facilities. Such rationalization steps are continuing to take place in 2003. Cooper Cameron maintains advanced manufacturing, quality assurance and testing equipment geared to the specific products that it manufactures and uses extensive process automation in its manufacturing operations. The manufacturing facilities utilize computer-aided, numeric-controlled tools and manufacturing techniques that concentrate the equipment necessary to produce similar products in one area of the plant in a configuration commonly known as a manufacturing cell. One operator in a manufacturing cell can monitor and operate several machines, as well as assemble and test products made by such machines, thereby improving operating efficiency and product quality.

Cooper Cameron’s test capabilities are critical to its overall processes. The Company has the capability to test most equipment at rated operating conditions, measuring all operating parameters, efficiency and emissions. All process compressors for air separation and all plant air compressors are given a mechanical and aerodynamic test in a dedicated test center prior to shipment.

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All of Cooper Cameron’s Asian, European and Latin American manufacturing plants are ISO certified and API licensed. Most of the U.S. plants are ISO certified and certification is planned for the remainder. ISO is an internationally recognized verification system for quality management.

Ba cklog

Cooper Cameron’s backlog was approximately $827.8 million at December 31, 2002, (approximately 76% of which is expected to be shipped during 2003) as compared to $695.4 million at December 31, 2001 and $528.2 million at December 31, 2000. Backlog consists of customer orders for which a purchase order has been received, satisfactory credit or financing arrangements exist and delivery is scheduled.

Patents, Trademarks and Other Intellectual Property

As part of its ongoing research, development and manufacturing activities, Cooper Cameron has a policy of seeking patents when appropriate on inventions involving new products and product improvements. Cooper Cameron owns 241 unexpired United States patents and 664 unexpired foreign patents. During 2002, 21 new U.S. and 120 new foreign patent applications were filed.

Although in the aggregate these patents are of considerable importance to the manufacturing of many of its products, Cooper Cameron does not consider any single patent or group of patents to be material to its business as a whole.

Trademarks are also of considerable importance to the marketing of Cooper Cameron’s products. Cooper Cameron considers the following trade names to be material to its business as a whole: Cameron, Cooper-Bessemer (Reciprocating Products), Ajax, Willis and W-K-M. Other important trademarks used by Cooper Cameron include C-B Turbocharger^™, Demco, DryPak, Dynacentric^™, Dynaseal^™, Enterprise, Foster, Genuine Joy, H & H^™, McEvoy, MSG, Nickles Industrial, Orbit, PPC, Penn, POW-R-SEAL^™, Quad 2000^™, SAF-T-SEAL^™, Superior, TA, Texcentric, Thornhill Craver, TriAx, TruSeal, Turbine Specialties, Turbo Air, Turboblend and VANTAGE^™. Additionally, Cooper Cameron has the right to use the trademark Joy on aftermarket parts until November 2027. Cooper Cameron has registered its trademarks in the countries where such registration is deemed material.

Cooper Cameron also relies on trade secret protection for its confidential and proprietary information. Cooper Cameron routinely enters into confidentiality agreements with its employees and suppliers. There can be no assurance, however, that others will not independently obtain similar information or otherwise gain access to Cooper Cameron’s trade secrets.

Employ ees

As of December 31, 2002, Cooper Cameron had approximately 7,800 employees, of which approximately 1,446 were represented by labor unions. Cooper Cameron believes its current relations with employees are good. There were no labor contracts negotiated in 2002. On January 1, 2003, Cameron signed a new three-year agreement with the Amalgamated Engineering and Electrical Union (AEEU), representing 280 hourly employees in the Leeds, England facility. The Company’s relations with the AEEU are excellent and the signing of this three-year agreement provides a stable environment for this important facility.

Available Information

Our website is www.coopercameron.com. Available free of charge on our website is information such as previously filed reports with the Securities and Exchange Commission (SEC), charters of the Committees of the Board, press releases and other documents that may be required to be made available by the SEC or the New York Stock Exchange. The information on our website is updated as soon as reasonably practicable. The information on our website is not, and shall not be deemed to be, a part of this Form 10-K or any other filing we make with the SEC. Additionally, our previously filed reports and statements are also available at the SEC’s website, www.sec.gov.

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ITEM 2.    PROPERTIES

The Company currently operates manufacturing plants ranging in size from approximately 21,000 square feet to approximately 447,000 square feet of manufacturing space. The Company also owns and leases warehouses, distribution centers, aftermarket and storage facilities, and sales offices. The Company leases its corporate headquarters office space and space for the Cameron division headquarters in Houston, Texas.

The Company manufactures, markets and sells its products and provides services throughout the world, operating facilities in numerous countries. At December 31, 2002, the significant facilities used by Cooper Cameron throughout the world for manufacturing, distribution, aftermarket services, machining, storage and warehousing contained an aggregate of approximately 8,027,488 square feet of space, of which approximately 6,580,048 square feet (82%) was owned and 1,447,440 (18%) was leased. Of this total, approximately 5,807,822 square feet of space (72%) is located in the United States and Canada, 342,695 square feet of space (4%) is located in Mexico and South America, and 1,876,971 square feet of space (24%) is located in Europe, Africa and Asia. The table below shows the number of significant manufacturing, warehouse and distribution and aftermarket facilities by business segment and geographic area. Cameron and CCV share space in certain facilities and, thus, are being reported together.

Cooper Cameron believes its facilities are suitable for their present and intended purposes and are adequate for the Company’s current and anticipated level of operations.

ITEM 3.    LEGAL PROCEEDINGS

Cooper Cameron is a party to various legal proceedings and administrative actions, including certain environmental matters discussed below, all of which are of an ordinary or routine nature incidental to the operations of the Company. In the opinion of Cooper Cameron’s management, such proceedings and actions should not, individually or in the aggregate, have a material adverse effect on the Company’s results of operations or financial condition.

Environmental Matters

Cooper Cameron is subject to numerous federal, state, local and foreign laws and regulations relating to the storage, handling and discharge of materials into the environment, including the Comprehensive Environmental Response Compensation and Liability Act (“CERCLA”), the Clean Water Act, the Clean Air Act (including the 1990 Amendments) and the Resource Conservation and Recovery Act. Cooper Cameron believes that its existing environmental control procedures are adequate and it has no current plans for substantial capital expenditures in this area. Cooper Cameron has an active environmental management program aimed at compliance with existing environmental regulations and elimination or significant reduction in the generation of pollutants in its manufacturing processes. Cooper Cameron management intends to continue these policies and programs.

The cost of environmental remediation and compliance has not been a material expense for the Company during any of the periods presented in this Form 10-K. Cooper Cameron has been identified as a potentially responsible party (“PRP”) with respect to five sites designated for cleanup under CERCLA or similar state laws. The Company’s involvement at two of the sites has been settled by de minimis payments and involvement at two of the other sites is believed to be at a de minimis level. The fifth site is Osborne, Pennsylvania (a landfill into which the Cooper Compression operation in Grove City, Pennsylvania deposited waste), where remediation is

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complete and remaining costs relate to ongoing ground water treatment and monitoring. The Company is also engaged in site cleanup under the Voluntary Cleanup Plan of the Texas Commission on Environmental Quality at former manufacturing locations in Houston and Missouri City, Texas. The Company believes, based on its review and other factors, that the estimated costs related to these sites will not have a material adverse effect on the Company’s results of operations, financial condition or liquidity. However, no assurance can be given that the actual cost will not exceed the estimates of the cleanup costs, once determined. Additionally, the Company has discontinued operations at a number of other sites which had previously been in existence for many years. The Company does not believe, based upon information currently available, that there are any material environmental liabilities existing at these locations. As of December 31, 2002, the Company’s consolidated financial statements included $11.1 million of environmental reserves.

Cooper Cameron is a named defendant in two lawsuits regarding contaminated underground water in a residential area adjacent to a former manufacturing site of one of its predecessors. One of the suits requested class action status, which, to date, has not been granted. The Company has been and is currently working with the Texas Commission of Environmental Quality and continues to monitor the underground water in the area. The Company is of the opinion that there is no risk to area residents and that the suits essentially reflect concerns over possible declines in property value. The Company believes, based on its review of the facts and law, that any potential exposure from these suits will not have a material adverse effect on its results of operations, financial condition or liquidity.

Other Matters

Cooper Cameron is a named defendant in a number of multi-defendant, multi-plaintiff tort lawsuits. To date, the Company has been dismissed from a number of these suits and has settled a number of others for small sums. The Company believes, based on its review of the facts and law, that the potential exposure from the remaining suits will not have a material adverse effect on its results of operations, financial condition or liquidity.

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

There were no matters submitted to a vote of security holders during the fourth quarter of 2002.

PART II

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

The common stock of Cooper Cameron, par value $.01 per share (together with the associated Rights to Purchase Series A Junior Participating Preferred Stock), is traded on The New York Stock Exchange (“NYSE”). No dividends were paid during 2002.

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The following table indicates the range of trading prices on the NYSE for January 2, 2001 through December 31, 2001 and for January 2, 2002 through December 31, 2002.

As of March 14, 2003, the approximate number of stockholders of record of Cooper Cameron common stock was 1,520.

Information concerning securities authorized for issuance under equity compensation plans is set forth in the section entitled “Equity Compensation Plan Information” in Item 12 of Part III of this report.

ITEM 6.    SELECTED FINANCIAL DATA

The information set forth under the caption “Selected Consolidated Historical Financial Data of Cooper Cameron Corporation” on page 57 in the 2002 Annual Report to Stockholders is incorporated herein by reference.

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

The information set forth under the caption “Management’s Discussion and Analysis of Results of Operations and Financial Condition of Cooper Cameron Corporation” on pages 25-33 in the 2002 Annual Report to Stockholders is incorporated herein by reference.

ITEM 7A.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

The information for this item is set forth in the section entitled “Market Risk Information” on page 33 in the 2002 Annual Report to Stockholders and is incorporated herein by reference.

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I TEM 8.    FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

The following consolidated financial statements of the Company and the independent auditors’ report set forth on pages 34-56 in the 2002 Annual Report to Stockholders are incorporated herein by reference:

Report of Independent Auditors.

Consolidated Results of Operations for each of the three years in the period ended December 31, 2002.

Consolidated Balance Sheets as of December 31, 2002 and 2001.

Consolidated Cash Flows for each of the three years in the period ended December 31, 2002.

Consolidated Changes in Stockholders’ Equity for each of the three years in the period ended December 31, 2002.

Notes to Consolidated Financial Statements.

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

None.

PART III

ITEM 10.    DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT.

The information on Directors of the Company is set forth in the section entitled “The Nominees and Continuing Directors” on pages 10-12 in the Proxy Statement of the Company for the Annual Meeting of Stockholders to be held on May 8, 2003, which section is incorporated herein by reference. Information regarding executive officers of the Company is set forth below.

There are no family relationships among the officers listed, and there are no arrangements or understandings pursuant to which any of them were elected as officers. Officers are appointed or elected annually by the Board of Directors at its first meeting following the Annual Meeting of Stockholders, each to hold office until the corresponding meeting of the Board in the next year or until a successor shall have been elected, appointed or shall have qualified.

Section 16(a) Beneficial Ownership Reporting Compliance

The information concerning compliance with Section 16(a) is set forth in the section entitled “Section 16(a) Beneficial Ownership Reporting Compliance” on page 23 in the Proxy Statement of the Company for the Annual Meeting of Stockholders to be held on May 8, 2003, which section is incorporated herein by reference.

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CURRENT EXECUTIVE OFFICERS OF THE REGISTRANT

ITEM 11.    EXECUTIVE COMPENSATION.

The information for this item is set forth in the following sections in the Proxy Statement of the Company for the Annual Meeting of Stockholders to be held on May 8, 2003, which sections are incorporated herein by reference:

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ITEM 12.    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS.

The information concerning security ownership of certain beneficial owners and management is set forth in the sections entitled “Security Ownership of Certain Beneficial Owners” on page 22 and “Security Ownership of Management” on pages 12-13 in the Proxy Statement of the Company for the Annual Meeting of Stockholders to be held on May 8, 2003, which sections are incorporated herein by reference.

Following is information relating to the Company’s equity compensation plans as of December 31, 2002:

Equity Compensation Plan Information

Further information relating to the Company’s equity compensation plans is included in Note 9 of the Notes to Consolidated Financial Statements, which Notes are incorporated herein by reference in Part II, Item 8 hereof (“Notes to Consolidated Financial Statements”).

ITEM 13.    CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

None

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PART IV

ITEM 14.    CONTROLS AND PROCEDURES

Within the 90-day period prior to the filing of this Annual Report on Form 10-K, the Company carried out an evaluation, under the supervision and with the participation of the Company’s Disclosure Committee and the Company’s management, including the Chief Executive Officer and the Chief Financial Officer, of the effectiveness of the design and operation of the Company’s disclosure controls and procedures, as defined by Exchange Act Rule 13a-14. Based upon that evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that the Company’s disclosure controls and procedures are effective in ensuring that information required to be disclosed by the Company is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms.

Subsequent to the date of that evaluation, the Company converted its Cooper Compression operations to Cooper Cameron’s new enterprise-wide software system. Although the Company developed an overall implementation plan which it believes will allow for a successful transition to the new system, the Disclosure Committee has not reviewed the effectiveness of the disclosure controls and procedures with respect to this conversion. This is expected to occur in conjunction with the Company’s first quarter certification process.

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

(1) Financial Statements:

All financial statements of the Registrant as set forth under Item 8 of this Annual Report on Form 10-K.

(2) Financial Statement Schedules:

Financial statement schedules are omitted because of the absence of conditions under which they are required or because all material information required to be reported is included in the consolidated financial statements and notes thereto.

(3) Exhibits:

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The Company has filed no reports on Form 8-K during the fourth quarter of 2002 or through March 21, 2003.

ITEM 16.    PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information for this item is set forth in the section entitled “Principal Accounting Firm Fees” on page 9 in the Proxy Statement of the Company for the Annual Meeting of Stockholders to be held on May 8, 2003, which section is incorporated herein by reference.

The Audit Committee approved over 90% of the fees reflected in the “Principal Accounting Firm Fees” table for 2002. In addition, effective October 2002, the Audit Committee’s policies and procedures with respect to these fees provide for approval in advance on an annual basis.

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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, on this 21st day of March, 2003.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed on this 21st day of March, 2003, below by the following persons on behalf of the Registrant and in the capacities indicated.

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Cooper Cameron Corporation and Subsidiaries

Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Sheldon R. Erikson, Chairman and Chief Executive Officer of Cooper Cameron Corporation, certify that:

Date: March 21, 2003

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Cooper Cameron Corporation and Subsidiaries

Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Franklin Myers, Senior Vice President of Finance and Chief Financial Officer of Cooper Cameron Corporation, certify that:

Date: March 21, 2003

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EXHIBIT INDEX

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