Tri-Valley Corporation was founded in 1971 and is headquartered in Bakersfield, California. Tri-Valley Corporation, through its subsidiaries, engages in the exploration, acquisition, and development of petroleum, metal, and mineral properties. Tri-Valley Corporation principal oil and gas properties include the Ekho property and Sunrise-Mayel Natural Gas project located in California. Tri-Valley Corporation operates precious metals properties in Alaska comprising the Richardson claim block consisting of 28,720 gross acres located in the north of Richardson Highway; and the Shorty Creek project in the Livengood District of Alaska. Tri-Valley Corporation also holds industrial minerals project, which consists of the Admiral calcium carbonate mine located on the north-west side of Prince of Wales Island. In addition, Tri-Valley Corporation involves in oil and gas drilling and development operations.

ONEOK Partners gasses up and ships its products through interstate natural gas pipelines in 10 states. Its pipelines include Midwestern Gas Transmission, Guardian Pipeline, Viking Gas Transmission, and OkTex Pipeline. It operates 14,300 miles of gas-gathering pipeline and 5,630 miles of transportation pipeline, as well as gas processing plants and storage facilities. It also owns one of the US's top natural gas liquids (NGL) systems, and operates a parking garage and leases office space in Tulsa. ONEOK holds a 46% stake in ONEOK Partners and 100% of its general partner.

Hughes Christensen has made a name for itself in the oil and gas industry. Hughes Christensen Company, a division of Baker Hughes, manufactures diamond drill bits and Tricone bits (three toothed, with conical cutters) primarily for customers in the oil and gas industry. Hughes Christensen also offers advance log and rock strength analysis and drilling optimization services. Hughes Christensen Company operates a manufacturing facilitie in the US which produces Tricone bits, and in Germany, Singapore, the US, and Venezuela (producing diamond bits). Hughes Christensen sells its products through offices worldwide.

Carroll Independent Fuel is a family-owned, full-service fuel company that has been in business since 1907, and Carroll Independent Fuel Co. have a proud heritage of exceeding our customers' expectations. Carroll Independent Fuel Co. distributes heating oil, propane, kerosene, gasoline, diesel, and lubricants to residential and commercial customers in Maryland, Pennsylvania, and Virginia. Carroll Independent Fuel has long-standing fuel supplier arrangements with industry majors CITGO Petroleum, BP, and Exxon Mobil. Carroll Independent Fuel Co., which serves a network of 230 fuel dealers, also sells and services HVAC equipment, electric heat pumps, swimming pool heaters, and water heaters.

National Oilwell Varco, Inc. designs, constructs, manufactures, and sells systems, components, and products used in oil and gas drilling and production; provides oilfield services and supplies; and distributes products, and provides supply chain integration services to the upstream oil and gas industry worldwide. National Oilwell Varco, Inc. operates through three business segments: Rig Technology, Petroleum Services & Supplies, and Distribution Services. The Rig Technology segment offers offshore and onshore drilling rigs; derricks; pipe lifting, racking, rotating, and assembly systems; rig instrumentation systems; coiled tubing equipment and pressure pumping units; well workover rigs; wireline winches; and cranes. The Petroleum Services & Supplies segment manufactures, rents, and sells consumable goods for use in drilling operations, including drill pipe, wired drill pipe, transfer pumps, solids control systems, drilling motors, drill bits, reamers and other down hole tools, and mud pump consumables. National Oilwell Varco, Inc. primarily serves drilling contractors, shipyards and other rig fabricators, well servicing companies, pressure pumping companies, national oil companies, independent oil and gas companies, supply stores, and pipe-running service providers. National Oilwell Varco, Inc. has joint venture agreements with Schlumberger, Ltd. and Austrian based Voestalpine Group. National Oilwell Varco, Inc. was founded in 1862 and is based in Houston, Texas.

It's the octane in fuel in the pipes of Buckeye Pipe Line that gets engines to buck up. A partnership subsidiary of Buckeye Partners, the company operates an interstate common carrier refined petroleum pipeline that runs some 2,643 miles from Massachusetts to Illinois. The refined petroleum products carried include gasoline, turbine fuel, diesel fuel, heating oil and kerosene. The company serves major population centers in nine states. It is also the major jet engine fuel provider to John F. Kennedy International Airport, LaGuardia Airport, Newark International Airport and a number of other airports within the territory served by the pipeline operator.

CSV markets and distributes finished petroleum products for home and industry, as well as for resale through a network of retailers and associate marketers. CityServiceValcon name represents the combination of two long-standing petroleum marketers, City Service and Valcon Distributing, with roots in Kalispell, Montana dating to the 1930's. The companies joined forces in October of 2003, combining facilities, product lines and personnel to strengthen CityServiceValcon long-term position in a shrinking field of peers. CityServiceValcon corporate office is located in picturesque Kalispell, near Glacier National Park. Through strategically positioned plants and support offices, CityServiceValcon serve customers from the Pacific Northwest to the Rockies and Plains states.

In a world where new “green” solutions are complex and difficult to understand, the Good Energy Group companies try to make a difference by communicating simply and involving individuals in their choice of the source of their energy. The Group’s companies are involved only in renewable or sustainable energy, sourcing and investing in technologies such as solar, wind and biomass. It also looks to invest in other small businesses that fit the aims and the mission of the Good Energy Group of companies. The business that formed the foundation of Good Energy Group today has been investing in the UK renewable and sustainable energy markets for nearly 10 years, and will celebrate its anniversary this Year. During that time the market has changed significantly and its companies have grown up, developing stronger market presences and improving their operational experience. Good Energy Group is now looking to invest more widely in this market, building on the passion and commitment from its employees, its customers and its generators.

PTT Exploration and Production (PTTEP) was established for the sole purpose of searching for black gold, that is. PTT Exploration and Production Public engages in petroleum exploration and production, with more than 40 active projects in Algeria, Australia, Bahrain, Bangladesh, Cambodia, Egypt, Indonesia, Iran, Malaysia, Myanmar, New Zealand, Oman, Thailand, and Vietnam. The company has proved reserves of 946 million barrels of oil equivalent. PTT Exploration and Production Public end products include crude oil, natural gas, liquid propane gas, and condensate. PTTEP also operates natural gas pipelines. PTT Exploration and Production Public was founded in 1985; PTT Public Co. owns 66% of its shares.

Pioneer Southwest Energy Partners L.P. (NYSE: PSE) is a Delaware limited partnership formed by Pioneer Natural Resources Company (NYSE: PXD) to own and acquire oil and gas assets in Pioneer Southwest's area of operations, which consists of onshore Texas and eight counties in the southeast region of New Mexico. Pioneer Southwest's assets currently consist of non-operated working interests in approximately 1,100 identified producing wells in the Spraberry field in the Permian Basin of West Texas, with approximately 23 MMBOE of proved reserves as of December 31, 2008. Pioneer Southwest owns a 78% average working interest in these wells, and Pioneer Natural Resources is the operator. According to the Energy Information Administration, the Spraberry field is the fifth largest oil field in the United States and the only large onshore oil field that is growing. Recently published production information identifies Pioneer Natural Resources as the largest operator in the field, and Pioneer Southwest expects to benefit from that experience and scale of operations.

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