Integrated oil giant Rosneft conducts oil and gas exploration and production activities in Siberia, the Far East, the North Caucasus, Timan-Pechora, the Volga-Urals region, the Black, Caspian, and Azov Seas, and in Kamchatka. OAO Rosneft Oil Company also has exploration projects in Algeria, Kazakhstan, and Turkmenistan. OAO Rosneft Oil Company has proved, probable and possible reserves of 49 billion barrels of oil equivalent. OAO Rosneft Oil Company has seven refineries with an aggregate capacity of 56.7 million tonnes. Rosneft also operates shipping and pipeline companies, as well as a national network of 1,700 gasoline stations. The Russian government owns 75% of Rosneft.

Clayton Williams Energy, Inc. was founded in 1991 and is headquartered in Midland, Texas.Clayton Williams Energy, Inc., an independent oil and gas company, engages in the exploration for and production of oil and natural gas properties primarily in Texas, Louisiana, and New Mexico. As of December 31, 2008, it had 6,704 gross producing oil and gas wells; leasehold interests in approximately 1.2 million gross undeveloped acres; and proved reserves of 228.6 billion cubic feet of natural gas equivalents. Clayton Williams Energy, Inc. also has equity interest in a joint venture with Lariat Services, Inc. to construct, own, and operate 12 drilling rigs. In addition, Clayton Williams Energy owns and operates natural gas service facilities consisting of 94 miles of pipeline, 3 treating plants, 1 dehydration facility, 3 compressor stations, and 4 wellhead type treating and compression facilities.

OMNI Energy Services Corp. provides integrated oilfield services to oil and gas companies operating in the Gulf of Mexico, the Rocky Mountain region, and the south central United States. OMNI Energy Services Corp. Seismic Services segment provides onshore seismic drilling, operational support, permitting, and survey services in the marsh, swamps, shallow water, and contiguous dry areas primarily in Louisiana and Texas. OMNI Energy Services Corp. Environmental Services segment offers dock-side and offshore hazardous and non-hazardous oilfield waste management and environmental cleaning services, including drilling rig, tank, and vessel cleaning; safe vessel entry; naturally occurring radioactive material (NORM) decontamination; platform abandonment; pipeline flushing; gas dehydration; and hydro blasting. This segment also provides NORM surveys, cleaning and waste disposal, tank degassing and demolition, rig pit cleaning, oilfield waste disposal, hydro blasting, dockside and offshore cleaning, and offshore sandblasting and painting services. OMNI Energy Services Corp. Equipment Leasing segment offers rental oilfield equipment, such as water, mud, and disposal pumps; mud, fuel, and frac tanks; air compressors; wireline units; generators; high pressure washers; light towers; tubing and handling tools; and pressure washers, steam cleaners, and oilfield cooling fans, as well as provides land based environmental cleaning services. OMNI Energy Services Corp. was founded in 1987 and is headquartered in Carencro, Louisiana.

Pemex is the largest company in Mexico and Latin America and the largest taxpayer in the country.It is one of the few oil companies in the world that develops the whole industry chain, from exploration to distribution and marketing of final products. In 2006 earned a net income of 42 thousand 497 million pesos, reported sales in the country for $ 546 producing 750 million dollars and revenues from exports reached 511 thousand 366 million pesos.

Tesco Corporation engages in the design, manufacture, and service delivery of technology based solutions for the upstream energy industry worldwide. Tesco Corporation operates in three segments: Top Drive Drilling Systems, Tubular Services, and CASING DRILLING. The Top Drive Drilling Systems segment manufactures, sells, and supports top drives that are used in drilling operations to rotate the drill string. Tesco Corporation product line includes a range of portable and permanently installed top drive products with lifting capacities of 150 through 750 tons, both hydraulically and electrically powered. Tesco Corporation also provides hydraulically powered top drive systems for rent. The Tubular Services segment offers a range of tubular handling and installation services, including the TESCO Casing Drive System plus a range of downhole tool rentals and accessories. The CASING DRILLING segment provides downhole and surface equipment on a rental basis to allow a well to be drilled with conventional oilwell casing, eliminating the use of drill pipe. Tesco Corporation was founded in 1986 and is headquartered in Houston, Texas.

Esso S.A.F. specializes in the exploration and production of petroleum and has refining and distribution operations as well (through its two refineries at Fos-sur-Mer and Port-J�r�me Gravenchon). Key products include automobile and aviation fuels, distillates, heavy fuels, and other related products that are sold worldwide through the company's more than 700 service stations. In addition, Esso S.A.F. manufactures lubricants for both professional and private usage. Industry giant Exxon Mobil Corporation owns controls the exploration, production, refining, and marketing company.

CNX Gas Corporation engages in the exploration, development, production, and gathering of natural gas primarily in the Appalachian and Illinois basins, the United States. CNX Gas Corporation primarily develops coalbed methane (CBM), as well as conventional marcellus and other shale gas. CNX Gas Corporation holds rights associated with CBM for 4.5 billion tons of proved coal reserves in northern Appalachia, central Appalachia, the Illinois Basin, and other western basins. As of December 31, 2009, CNX Gas had 1.9 trillion cubic feet equivalent of net proved reserves. CNX Gas Corporation is headquartered in Canonsburg, Pennsylvania. CNX Gas Corporation is a subsidiary of CONSOL Energy Inc.

Pinnacle Gas Resources' mission culminates in the development of US natural gas reserves. The company focuses on acquiring and developing coalbed methane (CBM) properties in the Rocky Mountain region. It owns natural gas and oil leasehold interests in 477,000 gross (332,000 net) acres, primarily in the Powder River Basin and Green River Basin in Wyoming and Montana. Pinnacle Gas Resources owns interests in 663 gross wells on its properties. In 2008 the company had proved reserves of 27.7 billion cu. ft. of natural gas equivalent; that year Pinnacle Gas Resources drilled 117 gross (82 net) wells. A publicly traded corporation headquartered in Sheridan, Wyoming, Pinnacle Gas Resources, Inc. was formed in June of 2003 through a contribution of property by CCBM, Inc., a subsidiary of Carrizo Oil & Gas, Inc. (NASDAQ:CRZO), and Rocky Mountain Gas, Inc., a subsidiary of U.S. Energy, Inc. (NASDAQ:USEG), and a capital contribution by Credit Suisse First Boston.

InterOil Corporation is developing an Integrated Oil and Gas Company in Papua New Guinea. The Company has positioned itself to own assets through the entire value chain - from the well-head to retail. InterOil has also positioned itself through a joint venture holding company to develop a LNG project in Papua New Guinea. The joint venture company is targeting 2015 for the delivery of 'first gas'. Getting into oil is a slippery business, but one embraced by InterOil Corporation, which is focused on developing an integrated energy business in Papua New Guinea and the surrounding region. In addition to operating a 36,000 barrel-per-day refinery and retail assets, InterOil has begun an extensive exploration program on its 4.6 million net acre property in Papua New Guinea, northwest of Port Moresby. Most of the refined products from InterOil's refinery are secured by contracts with Royal Dutch Shell and InterOil's subsidiary, InterOil Products Limited. InterOil secures crude oil supply for its refinery though a contract with BP Singapore.

Heading up petroleum transportation around the Great Lakes is Enbridge Energy Partners, which owns the 1,900-mile US portion of the world's longest liquid petroleum pipeline. When combined with the Canadian segment (owned and operated by Enbridge Inc.), the pipeline system spans some 3,500 miles across North America. Other midstream assets include 5,300 miles of crude oil gathering and transportation lines and 28.9 million barrels of crude oil storage and terminaling capacity, and 11,700 miles of natural gas gathering and transportation pipelines. Enbridge Energy Management owns a 14% stake in the company. In 2008 Enbridge Inc. boosted its overall stake in the partnership to 27%.

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