Holly Corporation, together with its subsidiaries, operates as a petroleum refiner in the United States. The company process sour crude oils into light petroleum products, including gasoline, diesel fuel, jet fuel, fuel oils, specialty lubricant products, gas oil/intermediates, carbon black oil, and liquid petroleum gas (LPG) and other products at its three refineries located in Artesia and Lovington, New Mexico; Woods Cross, Utah; and Tulsa, Oklahoma. It also manufactures and markets specialty and modified asphalt products from various terminals in Arizona, New Mexico, and Texas. In addition, the company owns interests in a 12-inch refined products pipeline project from Salt Lake City, Utah to Las Vegas, Nevada, together with terminal facilities in the Cedar City, Utah, and North Las Vegas areas. Further, it holds 34% interests in Holly Energy Partners, L.P., which owns and operates approximately 2,500 miles of petroleum product and crude oil pipelines located principally in west Texas and New Mexico; ten refined product terminals; a jet fuel terminal; four refinery loading rack facilities; a refined products tank farm facility; and on-site crude oil tanks at its refineries, an on-site refined product tankage at Tulsa refinery, and a 25% interest in a 95-mile crude oil pipeline joint venture. Holly Corporation markets its gasoline to other refiners, convenience store chains, independent marketers, and retailers; diesel fuel to other refiners, truck stop chains, wholesalers and railroads; jet fuel to military and commercial airlines; specialty lubricant products to commercial and specialty markets; asphalt to governmental entities or contractors; and LPG’s to LPG wholesalers and LPG retailers, as well as carbon black oil for further processing or blended into fuel oil. The company offers its products primarily in the Southwestern, Rocky Mountain, and Mid-Continent regions of the United States. Holly Corporation was founded in 1947 and is based in Dallas, Texas.

Superior Energy Services, Inc. provides specialized oilfield services and equipment to serve the production and drilling related needs of oil and gas companies. Superior Energy Services Inc. operates through three segments: Subsea and Well Enhancement, Drilling Products and Services, and Marine. The Subsea and Well Enhancement provides various services, including coiled tubing, electric line, pumping and stimulation, gas lift, well control, snubbing, recompletion, engineering and well evaluation, offshore oil and gas tank and vessel cleaning, decommissioning, plug and abandonment, and mechanical wireline services. Superior Energy Services Inc. provides mechanical wireline services in the Gulf of Mexico. This segment also manufactures and sells drilling rig instrumentation equipment. The Drilling Products and Services segment manufactures, sells, and rents equipment for use with offshore and onshore oil and gas well drilling, completion, production, and workover activities in Latin America, North America, the North Sea region, Continental Europe, the Middle East, Central Asia, West Africa, and the Asia Pacific region. Superior Energy Services Inc. drilling products and services comprise pressure control equipment, drill pipe and landing strings, connecting iron, handling tools, stabilizers, drill collars, torquing tools, and on-site accommodations. The Marine segment owns and operates a fleet of liftboats in the Gulf of Mexico and the Caribbean. As of December 31, 2009, Superior Energy Services Inc. operated a fleet of 26 rental liftboats. Superior Energy Services Inc. was founded in 1991 and is based in New Orleans, Louisiana.

Penn West Energy Trust was founded in 1979 and is headquartered in Calgary, Canada. Penn West Energy Trust (formerly Penn West Petroleum) has been pumping gas and oil from Western Canada in hopes of keeping black ink flowing from its auditor's pen. The independent exploration and production company has holdings of 3.2 million net acres of undeveloped land in Alberta, Saskatchewan, and British Columbia. In 2007 Penn West Energy Trust reported net proved and probable reserves of 644.2 million barrels of oil equivalent. Shareholders converted Penn West Energy Trust into a trust in 2005, making it one of Canada's largest oil and gas income trusts. It combined general partners Penn West, Northern Reef, Trocana, and Penn West Exploration.

SHV Holdings is a superheavyweight in Dutch commerce. SHV Holdings N.V., which is the largest private company in the Netherlands, has global interests in energy, retail, and raw-material distribution businesses. SHV Holdings N.V. is one of the world's top liquefied petroleum gas companies, and owns German metal recycling firm TSR Recycling. SHV also operates the Makro store chain, which has more than 170 stores in Asia and South America selling to small and medium-sized retailers. SHV Holdings N.V. Mammoet unit provides heavy lifting and transport services to the chemicals industry as well as to power plants. SHV is run by chairman Paul Fentener van Vlissingen and controlled by his family, which founded SHV more than a century ago.

Eden Energy is an exploration-stage oil and gas company with assets in Colorado, Nevada, and Alberta. Eden Energy Corp. primary focus is the Ant Hill Unit on the eastern flank of the White River Dome field in the Piceance Basin, Colorado. (Ant Hill is a 20,000-acre federal lease operated by EnCana Oil & Gas (USA) Inc.) Eden Energy drills wells outside EnCana's operating areas. In 2008 Eden Energy Corp. had four operating wells with proved reserves of 5.5 billion cu. ft. of natural gas equivalent. Eden Energy Corp. also has exploratory projects in the Noah and Cherry Creek projects in Nevada, and the Chinchaga project in Alberta.

Located directly between Green Bay and Milwaukee, Quality State Oil is in a good spot to fill up when you're driving through Wisconsin. The company operates a chain of 21 Q Mart gas stations from which it sells BP, Citgo, Exxon Mobil, and Shell gasoline. Quality State Oil operates its own fleet for distribution and supplies gasoline, diesel, Mobil lubricants, kerosene, heating oil, and fuel oil throughout northeast Wisconsin. The company also has three bulk plants, which have the capacity to store a half-million gallons of fuel.

Serica Energy plc is an international oil and gas exploration and production company with activities focussed on Western Europe and South East Asia. Serica has operations in the UK North Sea, Ireland, Spain, Morocco and Indonesia and has built a portfolio of exploration, appraisal and development projects, striking a balance between established hydrocarbon-producing basins where the chances of success are high, and untested basins where success is less certain but the rewards of success are more significant. Serica Energy plc, formed in 2004 through the merger of Kyrgoil Holding and Petroleum Development Associates, explores for and produces oil and gas in Indonesia, Ireland, Norway, Spain, the UK, and the Norwegian sectors of the North Sea. Serica Energy controls proved and probable reserves of 5.7 billion barrels of oil and 41.8 billion cu. ft. of natural gas. Serica Energy has a 20% interest in the Norwegian Bream oil discovery. To raise capital, in 2010 Serica Energy plc sold assets in Indonesia and Vietnam to KrisEnergy for $1905 million.

Bonavista Energy Trust is a Calgary-based oil and gas royalty trust created through the reorganization of Bonavista Petroleum Ltd. in July 2003. The exploration and production company focuses on four core areas in Alberta, British Columbia, and Saskatchewan. In 2008 Bonavista Energy Trust reported it had about 1.2 million net acres of undeveloped land, the bulk of which is in Alberta. Bonavista also has proved reserves of 142.2 million barrels of oil equivalent and has identified some 700 quality drilling prospects. Bonavista Energy Trust has a balanced production of 52,500 barrels of oil equivalent per day -- 55% natural gas, 34% light oil, and 11% heavy oil. In 2009 Bonavista Energy Trust built up its asset base, acquiring properties in central Alberta area for about $698 million.

Quicksilver Resources Inc. was founded in 1997 and is headquartered in Fort Worth, Texas with additional offices in Cut Bank, Montana; Glen Rose, Texas; and Calgary, Canada. Quicksilver Resources Inc., an independent energy company, engages in the acquisition, exploitation, exploration, development, production, and sale of natural gas, natural gas liquids, and crude oil in North America. Quicksilver Resources Inc. also involves in marketing, processing, and transmission of natural gas. Quicksilver Resources Inc. has interests in the Barnett Shale play in the Fort Worth Basin in north Texas; and the Rocky Mountain properties located in Montana and Wyoming, as well as interests in 127,000 contiguous acres in the Horn River Basin in northeast British Columbia. Quicksilver Resources Inc. also holds interests in the Canadian CBM properties in Alberta, Canada, as well as exploring the Delaware Basin in West Texas. Quicksilver Resources Inc. sells natural gas and crude oil to various customers, including utilities, oil and natural gas companies or their affiliates, industrial companies, trading and energy marketing companies, and other users of petroleum products. As of December 31, 2008, Quicksilver Resources Inc. had total estimated total proved reserves of 2.2 trillion cubic feet equivalents of natural gas. Quicksilver Resources Inc. has a strategic alliance with Enia S.p.A. to explore properties in the Fort Worth Basin.

Arawak Energy reserves its energy for former Soviet Union countries. An oil and gas exploration and production company, Arawak's assets include six properties in the Pre-Caspian Basin in western Kazakhstan, as well as four properties in the Komi Republic in Russia. Arawak Energy Ltd. also has exploration operations on properties in Azerbaijan. In 2008 the company's total proved and probable reserves were 61.8 million barrels of oil equivalent (boe); that same year, its total production topped 4 million boe, most of which was produced by its operations in Kazakhstan. Formerly a publicly-owned company, Arawak was acquired by a subsidiary of Vitol Group in 2009.

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