TXCO Resources Inc. is a full-cycle, U.S.-based, oil and gas exploration and production company with a diversified exploitation, development and exploration project inventory. Based in San Antonio, TXCO has more than 720,000 net acres under lease (1.3 million gross acres). TXCO Resources Inc. leverages its geological and geophysical expertise to increase shareholder value. TXCO Resources Inc. applies new technology to overlooked opportunities in high-potential areas that offer multiple resource plays and thousands of drilling prospects. Through its direct efforts and joint ventures with other oil and gas firms, the company explores for oil and natural gas in the Dakotas, Montana, and South Texas. In 2008 TXCO Resources Inc. reported estimated proved reserves of 81.7 billion cu. ft. of natural gas equivalent. TXCO Resources sells its oil and gas wholesale through independent marketers. Facing tough economic times, TXCO Resources Inc. filed for Chapter 11 bankruptcy protection in May, 2009.

The Nabors companies own and operate approximately 528 land drilling and approximately 763 land workover and well-servicing rigs in North America. Nabors' actively marketed offshore fleet consists of 37 platform rigs, 13 jack-up units and 3 barge rigs in the United States and multiple international markets. In addition, Nabors manufactures top drives and drilling instrumentation systems and provides comprehensive oilfield hauling, engineering, civil construction, logistics and facilities maintenance, and project management services. Nabors participates in most of the significant oil, gas and geothermal markets in the world. Nabors Drilling USA also provides well control equipment rental, equipment engineering, technical support and other rig-related services.

Occidental Petroleum Corporation was founded in 1920 and is based in Los Angels, California.Occidental Petroleum Corporation, together with its subsidiaries, operates as an oil and gas exploration and production company. Occidental Petroleum Corporation has three segments: Oil and Gas; Chemical; and Midstream, Marketing, and Other. The Oil and Gas segment engages in the exploration, development, production, and marketing of crude oil, natural gas liquids, and condensate and natural gas in Texas, New Mexico, California, Kansas, Oklahoma, Utah, and Colorado, as well as in Argentina, Bolivia, Colombia, Libya, Oman, Qatar, the unite Arab Emirates, and Yemen. As of December 31, 2008, Occidental Petroleum Corporation had proved reserves of approximately 2,978 million barrels of oil equivalent. The Chemical segment manufactures and markets basic chemicals, vinyls, and performance chemicals. The Midstream, Marketing, and Other Segment gathers, treats, processes, transports, stores, trades, and markets crude oil, natural gas, natural gas liquids, and condensate and carbon dioxide, as well as generates and markets power. In addition, Occidental Petroleum Corporation involves in the calcium chloride business.

Doyon, Limited, the doyenne of a Native American-owned corporations, is the largest private landowner in Alaska, controlling 12.5 million acres. Doyon, Limited has five businesses with diversified interests, including tourism (Doyon Tourism), oil exploration services (Doyon Drilling), catering, security services, and facility maintenance (Doyon Universal Services), commercial property management (Doyon Properties), and natural resource management (Doyon Lands and Natural Resources). The Doyon Foundation promotes health, education, and economic development of native Alaskans.

Spectra Energy Corp, through its subsidiaries and equity affiliates, engages in the ownership and operation of a portfolio of complementary natural gas-related energy assets. The company operates in four segments: U.S. Transmission, Distribution, Western Canada Transmission and Processing, and Field Services. The U.S. Transmission segment engages in the transportation and storage of natural gas for customers in various regions of the eastern and southeastern United States and the Maritime Provinces in Canada. As of December 31, 2009, its pipeline systems consisted of approximately 14,300 miles of transmission pipelines; and had 285 billion cubic feet of storage capacity. The Distribution segment provides retail natural gas distribution services in Ontario, Canada, as well as natural gas transportation and storage services to other utilities and energy market participants in Ontario, Canada and the United States. This segment had approximately 37,300 miles of distribution main and service pipelines serving approximately 1.3 million residential, commercial, and industrial customers. The Western Canada Transmission and Processing segment provides natural gas transportation, and gas gathering and processing services; and helps natural gas producers by removing impurities from the raw gas stream, including water, carbon dioxide, hydrogen sulfide, and other. The Field Services segment gathers and processes natural gas, as well as fractionates, markets, and trades natural gas liquid. It engages in gathering raw natural gas through gathering systems located in nine natural gas producing regions consisting of the Mid-Continent, Rocky Mountain, east Texas-north Louisiana, Barnett Shale, Gulf Coast, South Texas, Central Texas, Antrim Shale, and Permian Basin. Spectra Energy Corp. is headquartered in Houston, Texas. Spectra Energy Corp. operates independently of Duke Energy Corp. as of January 2, 2007.

Idemitsu Kosan Co., Ltd. was founded in Moji, Kita-Kyushu, in 1911 under the name of Idemitsu Shokai to engage in oil distribution. Since its foundation, Idemitsu has worked hard under the fundamental principle of social contribution through business, always maintaining respect for human beings in carrying out business operations. During its 97-year history, the Company has deployed its expertise globally in a wide range of strategic businesses, such as Core Businesses, including fuel products and basic chemicals; High Value- Added Businesses, including lubricants, performance chemicals, engineering plastics and such electronic materials as organic light emitting diode (OLED) materials, developed based on its own technologies cultivated in the Core Businesses; and Resource Businesses, including coal, uranium and geothermal energy in addition to oil exploration and production. As long as Japanese drive Toyotas, there will be a role for Idemitsu Kosan. The company is the #2 oil refiner in Japan (behind Nippon Oil). At its four refineries in Japan (processing 640,000 barrels per day) Idemitsu Kosan produces petroleum products, such as gasoline and other fuels, kerosene, and lubricants. It markets its fuel products through a network of 4,600 service stations. Idemitsu Kosan sells heavy oil and jet fuels to industries and kerosene and liquefied petroleum gas (LPG) to the residential sector. The company also has interests in oil exploration and production, as well as in other energy sources, including coal and uranium.

Trivello Ventures has its adventures in petroleum. The oil and gas exploration company focuses on resources in Western Canada where it explores for and develops oil and gas in Alberta. Trivello Energy Corp. has wells in multiple areas in Alberta. Trivello's five wells produce about 50 barrels of oil per day; the Lucy project, in which it has a 10% interest, is not producing yet. In early 2010, hoping to lessen its dependence on the then-troubled natural gas business, it branched out into precious metals, acquiring two gold properties in the Northwest Territories. Trivello Energy Corp. was formed in 1994.

EDF Energy has the London Bridge and Big Ben wired. The company, formerly London Electricity Group, provides retail electric services to customers across the UK. EDF Energy trades energy on the wholesale market and has power generation assets (three power plants) that give it 4,900 MW of capacity. EDF Energy generates about 6% of the power generated in the UK. It operates regulated transmission and distribution assets that deliver electricity to 7.9 million homes and businesses in London and eastern and southeastern England, and it also provides gas supply and infrastructure construction services. EDF Energy is a subsidiary of French utility giant Electricity de France (EDF).

Toreador Resources was founded in 1951 and is headquartered in Paris, France. Toreador Resources Corporation operates as an independent international energy company. Toreador Resources Corporation engages in the acquisition, development, exploration, and production of crude oil. Toreador Resources Corporation holds interests in developed and undeveloped oil properties in France. Toreador Resources primarily focuses on the Paris Basin Oil Shale. Toreador Resources Corporation was formerly known as Toreador Royalty Corporation and changed its name to Toreador Resources Corporation.

Wild Well Control provides emergency well control, firefighting, and engineering services to oil and gas companies worldwide. Wild Well Control, Inc. services include well control training, relief well design, emergency response planning, and data management. Wild Well Control, Inc. offers a portfolio of equipment including firefighting pumps and wagons, deluge systems, and field response units, as well as equipment and maintenance. Wild Well Control has contained oil well fires at land and offshore rigs in Europe, the Middle East, North and South America, and Southeast Asia. Wild Well Control, Inc. is a subsidiary of Superior Energy Services, which bought Wild Well Control in 2001.

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