Allis-Chalmers Energy provides drilling and oil field services to oil and gas exploration companies operating primarily in the western and southern US. It operates in three segments: Drilling and Completion; Oilfield Services (underbalanced drilling, directional drilling, tubular services, and production services); and Rental Services. Its Strata Directional Technology subsidiary offers drilling services to clients in Texas and Louisiana. Through its AirComp unit, Allis-Chalmers operates a fleet of 260 compressors, as well as a portfolio of full-time directional drillers, measurement-while-drilling tools, and downhole motors used for well production enhancement and completion. Allis-Chalmers Energy Inc. was founded in 1913 and is based in Houston, Texas.

Shell is a leading oil and gas producer in the deepwater Gulf of Mexico, a recognized pioneer in oil and gas exploration and production technology and one of America’s leading oil and natural gas producers, gasoline and natural gas marketers and petrochemical manufacturers. We operate in 50 states and employ more than 22,000 people delivering energy in technically innovative ways. Shell Pipeline Company keeps the oil moving and the pipes pumped. The company, a subsidiary of Shell Oil's Shell Oil Products US unit, is one of the largest petroleum products pipeline transportation companies in the US. Shell Pipeline has partial ownership of 10,000 miles of pipeline and annually moves more than 2 billion gallons of oil and petroleum products across 21 states. Shell Pipeline transports more than 50 different kinds of crude oil, more than 20 different grades of gasoline, including diesel fuel, jet fuel, chemicals, ethylene, and NGLs. The company manages more than 1,200 miles of offshore pipelines, 600 miles of onshore pipelines, and more than 10 terminals throughout the Gulf of Mexico.

Global Geophysical builds its business from the ground down. Global Geophysical Services, Inc. provides seismic data acquisition services to the oil and gas industry for locating potential reservoirs and studying known reserves. Global Geophysical transmits sound waves below the earth's surface to create two- and three-dimensional images of the existing subsurface geology. The firm's seismic crews work in a wide variety of terrains, including deserts, jungles, mountains, and swamps, and have completed projects in more than 100 countries, including Algeria, Argentina, Chile, Colombia, Georgia, India, Iraq, Mexico, Oman, Peru, and Uganda. In 2009 the company filed for an IPO.

Energy Transfer Equity, L.P., through its direct and indirect investments in the limited partner and general partner interests in Energy Transfer Partners, L.P., engages in midstream, intrastate, and interstate transportation of natural gas, as well as in storage of natural gas in the United States. The company’s Intrastate Transportation and Storage segment engages in the ownership and operation of natural gas transportation pipelines and natural gas storage facilities. As of December 31, 2009, it owned and operated approximately 7,800 miles of natural gas transportation pipelines and 3 natural gas storage facilities. This segment sells natural gas to electric utilities, independent power plants, local distribution companies, industrial end-users, and other marketing companies on the Houston pipeline system. Its Interstate Transportation segment involves owns and operates interstate natural gas pipeline. It owned and operates approximately 2,700 miles of interstate natural gas pipeline with an additional 180 miles under construction. The company’s Midstream segment engages in the ownership and operation of in service natural gas gathering pipelines, natural gas processing plants, natural gas treating facilities, and natural gas conditioning facilities. This segment owned and operated approximately 7,000 miles of in service natural gas gathering pipelines, 3 natural gas processing plants, 11 natural gas treating facilities, and 11 natural gas conditioning facilities. Its Retail Propane segment operates a retail distribution network consisting of approximately 440 customer service locations in approximately 40 states. The company was formerly known as La Grange Energy, L.P. Energy Transfer Equity, L.P. was founded in 2002 and is based in Dallas, Texas.

Copano was founded in 1992 by John R. Eckel, Jr., who served as its Chairman of the Board and Chief Executive Officer until his death in November 2009. Under his leadership, Copano grew from a single 23-mile pipeline to a successful midstream natural gas company with over 6,000 miles of pipe and seven processing plants. John maintained that Copano’s greatest asset was its people, and his commitment to Copano’s employees and producers was a constant that helped shape our company’s culture. We are a midstream natural gas company providing comprehensive services to natural gas producers, including natural gas gathering, intrastate transmission, processing, conditioning and treating. Our operations are located in Oklahoma, Texas, Wyoming and Louisiana. We provide midstream services to producers of about 1,700,000 MMBtu per day of natural gas.

Energetix keeps the lights shining and the stoves burning for its customers in the Empire State. The company is a nonregulated retail energy supplier, providing natural gas, electricity, and related products and services to customers in central and upstate New York State. The company became a subsidiary of Iberdrola USA (formerly Energy East) when its parent company, RGS Energy, was acquired by Energy East in 2002. In order to focus on its distribution businesses, Energetix sold its Griffith Oil subsidiary, which marketed propane, heating oil, and other liquid fuels, to private investors. Energetix and sister company NYSEG Solutions serve 182,000 electricity customers and 55,000 natural gas customers.

Pioneer Natural Resources Company was founded in 1997 and is headquartered in Irving, Texas. Pioneer Natural Resources Company engages in the exploration and production of oil and gas in the United States, South Africa, and Tunisia. Pioneer Natural Resources Company produces crude oil, natural gas, and natural gas liquids. Pioneer Natural Resources Company primarily holds interests in the Spraberry field in the Permian Basin area; the Hugoton and West Panhandle fields in the Mid-Continent area; and the Raton field in the Rocky Mountains area. As of December 31, 2008, Pioneer Natural Resources Company had proved undeveloped reserves and proved developed reserves of approximately 246 million barrels of oil and natural gas liquids; and 1,064 billion cubic feet of gas.

Fortune Oil sees success in oil and gas in its future. Through various subsidiaries and joint ventures, Fortune Oil PLC develops and operates projects that supply fuels to businesses and homes. Among its investments are a facility that delivers crude oil to one of Sinopec's largest refineries in China; an aviation refueling joint venture with BP and China National Aviation Fuel Company that supplies jet fuel to about 15 airports in central and southern China; a coal bed methane joint venture with the Shanxi provincial government; and a natural gas distribution business, sales of which rank in the top 10 of private-sector companies in China. Fortune Oil PLC is registered in England and Wales (number 2173279, main board symbol FTO) and is subject to UK Listing Rules and compliance regulations.

Watson Fuels has been delivering home heating oil for over 50 years. Watson Petroleum distributes petroleum products, including agricultural, home heating, and industrial fuels, to customers throughout the UK. Watson Petroleum Ltd. also provides boiler servicing and storage tank services. Watson Petroleum Ltd., which has 250 depots and a fleet of 130 tanker trucks, also has its own brand of lubricants for both automotive and industrial use. Watson Petroleum has expanded its operations in Herefordshire, Worcestershire, and Northamptonshire through acquisitions. Watson Petroleum Ltd. was founded with only one tanker in 1957 by Tony Watson.

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.

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