VAALCO Energy was founded in 1984 and is headquartered in Houston, Texas. VAALCO Energy, Inc., an independent energy company, engages in the acquisition, exploration, development, and production of crude oil and natural gas. VAALCO Energy, Inc. owns producing properties, as well as conducts exploration activities as an operator of consortiums internationally in Gabon and Angola, and as a non-operator in the British North Sea. VAALCO Energy, Inc. also has minor interests in the Texas Gulf Coast area and offshore Louisiana.

YPF Sociedad Anonima engages in the exploration, development, and production of crude oil, natural gas, and liquefied petroleum gas (LPG) in Argentina. The company also involves in the refining, marketing, transportation, and distribution of oil and a range of petroleum products, petroleum derivatives, petrochemicals, LPG, and bio-fuels. As of December 31, 2008, its crude oil transportation network included approximately 2,700 kilometers of crude oil pipelines with approximately 640,000 barrels of aggregate daily transportation capacity of refined products; crude oil tankage of approximately 7 million barrels; and terminal facilities at 5 Argentine ports. In addition, it participates in 3 power stations with an aggregate installed capacity of 1,622 megawatts; and engages in gas separation and natural gas distribution businesses. As of December 31, 2008, its automotive petroleum products’ retail distribution network consisted of 1,642 YPF-branded service stations. The company was founded in 1977 and is based in Buenos Aires, Argentina. YPF Sociedad Anonima is a subsidiary of Repsol YPF, S.A.

Vanguard Natural Resources, LLC, through its subsidiaries, engages in the acquisition, development, and exploitation of natural gas and oil properties. Vanguard Natural Resources properties are located in the southern portion of the Appalachian Basin, primarily in southeast Kentucky and northeast Tennessee; and the Permian Basin, primarily in west Texas and southeastern New Mexico, and in south Texas. As of December 31, 2008, Vanguard Natural Resources owned working interests in 958 net productive wells, and had estimated proved reserves of 108.5 billion cubic feet equivalents of natural gas and crude oil. Vanguard Natural Resources also has a 40% working interest in approximately 109,500 gross undeveloped acres surrounding or adjacent to its wells located in southeast Kentucky and northeast Tennessee. Vanguard Natural Resources was founded in 2006 and is based in Houston, Texas.

Florida Gas Transmission gasses up the Gulf Coast. The company transports natural gas to cogeneration facilities, electric utilities, independent power producers, municipal generators, and local distribution companies through a 5,000-mile natural gas pipeline extending from south Texas to south Florida. It delivers 2.3 billion cu. ft. of natural gas a day to more than 250 delivery points consisting of more than 50 natural gas-fired electric generation facilities. Florida Gas Transmission is operated by Citrus Corp., which is a joint venture of Southern Union and El Paso Corp.

Singapore and more. Singapore Petroleum Company (SPC) refines and sells oil and petroleum products, both in Singapore and across Asia. A 50%-owner of the Singapore Refining Company (Chevron owns the other half), SPC converts crude products into fuels. It processes 51.5 million barrels of crude per year. The company is also engaged in oil storge and terminalling. SPC' also manages a network of 38 gas stations in Singapore. The group also has operations in mainland China, Hong Kong, Malaysia, and Thailand. The company has exploration and production assets in Australia, Cambodia, China, Indonesia, and Vietnam. Singapore-based conglomerate Keppel owns 45% of SPC, but in 2009 agreed to sell this stake to PetroChina.

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.

Sterling Energy plc was formed in October 2002 by the reversal of Sterling Energy Limited into Lepco plc, following which it was renamed Sterling Energy PLC. Oil and natural gas exploration and production company Sterling Energy is looking for sterling results from its operations in Africa (Cameroon, Gabon, Madagascar, and Mauritania) and the Middle East (Kurdistan). Sterling Energy has proved and probable reserves of more than 21.3 million barrels of oil equivalent. In 2009 Sterling Energy plc sold its interests in several producing gas fields in the Gulf of Mexico (where it also served as the operator for most of its projects) for $90 million, in order to focus on new opportunities on the African continent.

Redwood Coast Petroleum is a multi-brand distributor of petroleum products.Redwood Coast Petroleum supply fuels and lubricants to commerce and industry in both the Greater Bay Area and the Redwood Empire of Northern California. Major fuel brands sold include Chevron, Valero, Conoco Phillips (Union 76) and Texaco. Major lubricant brands sold include Chevron, Exxon Mobil, Red Line and Full Force. Additionally, Redwood Coast Petroleum offer other products and services including propane service, retail branding, and underground storage tank (UST) inspections.

ndia’s flagship national oil company and downstream petroleum major, Indian Oil Corporation Ltd. (IndianOil) is celebrating its Golden Jubilee in 2009. It is India's largest commercial enterprise, with a sales turnover of Rs. 2, 85,337 crore – the highest-ever for an Indian company – and a net profit of Rs. 2, 950 crore for the year 2008-09. IndianOil is also the highest ranked Indian company in the prestigious Fortune 'Global 500' listing, having moved up 11 places to the 105th position in 2009. Incorporated as Indian Oil Company Ltd. on 30th June, 1959, it was renamed as Indian Oil Corporation Ltd. on 1st September, 1964 following the merger of Indian Refineries Ltd. (established 1958) with it. IndianOil and its subsidiaries account for approximately 48% petroleum products market share, 34% national refining capacity and 71% downstream sector pipelines capacity in India.

Sempra Generation (formerly Sempra Energy Resources) pools its parent's resources into generating electricity for the competitive market. The unit, which is part of Sempra Energy 's Sempra Global division, has more than 2,600 MW of generating capacity from interests in fossil-fueled power plants. Sempra Generation operates gas-fired power plants in Arizona, California and Nevada, and in Mexicali, Mexico. In order to reduce carbon emission output to meet state and federal regulations the company is developing its first wind power and solar energy projects.

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