Shell's Martinez Refinery, in operation since 1915, is both a pioneer and a pacesetter. Throughout its history, it has amassed a tradition of technical achievement, and is currently one of the most complex refineries in the world. Located 30 miles northeast of San Francisco on about 1,000 acres of land, Shell's Martinez Refinery combines state-of-the-art facilities and equipment to convert up to 165,000 barrels of crude oil a day into many useful products. These products include automotive gasoline, jet fuel, diesel, petroleum coke, industrial fuel oils, liquefied petroleum gas, asphalt, and sulfur.

Continental Resources, Inc. was founded in 1967 and is based in Enid, Oklahoma.Continental Resources, Inc. engages in the exploration, exploitation, and production of oil and natural gas properties primarily in the Rocky Mountain, Mid-Continent, and Gulf Coast regions of the United States. Continental Resources, Inc. primarily sells its oil and natural gas production to end users, as well as to midstream marketing companies or oil refining companies at the lease. As of December 31, 2008, Continental Resources, Inc. estimated proved reserves were 159.3 million barrels of oil equivalent (MMBoe), with estimated proved developed reserves of 106.0 MMBoe. Continental Resources owned 1,114,445 net undeveloped and 399,825 net developed acres, as well as had interests in 2,192 wells and operated 1,657 of these wells.

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.

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 Oil doesn't shilly-shally around, it explores for, produces, and markets oil, natural gas, and chemicals. The company's Shell Exploration & Production unit focuses its exploration on the deepwater plays in the Gulf of Mexico. Shell partners with Saudi Aramco in a US refining and marketing venture (Motiva), and owns Motiva's sister company Shell Oil Products US (formerly Equilon). Shell also produces petrochemicals (Shell Chemical) and liquefied natural gas (Shell US Gas & Power), and markets natural gas and electricity. Shell's parent, Royal Dutch Shell, is the world's #2 petroleum company (behind Exxon Mobil).

Holly Energy Partners is having a jolly good time piping petroleum. The company transports refined petroleum products and crude oil from Holly Corporation's Navajo refinery in New Mexico and Woods Cross refinery in Utah, and Alon USA's Big Spring refinery in Texas, to customers in the southwestern US. It operates 1,330 miles of refined petroleum pipelines (including 340 miles of leased pipelines), 11 distribution terminals, one jet fuel terminal, and two truck-loading facilities used to transport gasoline, diesel, and jet fuel. Holly Corporation, the parent of the company's general partner (Holly Logistics), holds a 46% stake in Holly Energy Partners.

Helix Energy Solutions Group, Inc. operates as an offshore energy company. Helix Energy Solutions Group, Inc. provides development solutions and various other contracting services to the energy market, as well as to its oil and gas properties. Helix Energy Solutions Group, Inc. provides a range of contracting services primarily in the Gulf of Mexico, North Sea, the Asia Pacific, and West Africa regions primarily in deepwater. Helix Energy Solutions Group, Inc. offers development services comprising installation of subsea pipelines, flowlines, control umbilicals, manifolds, and risers; pipelay and burial; installation and tie-in of riser and manifold assembly; commissioning, testing, and inspection services; and cable and umbilical lay and connection. Helix Energy Solutions Group, Inc. also provides various production services, including inspection, repair, and maintenance of production structures, risers, pipelines, and subsea equipment; well intervention; life of field support; and intervention engineering. In addition, Helix Energy Solutions Group, Inc. offers decommissioning and remediation services; plugging and abandonment services; platform salvage and removal services; pipeline abandonment services; and site inspections. Helix Energy Solutions Group, Inc. offers its products and services to independent oil and gas producers and suppliers, pipeline transmission companies, and offshore engineering and construction firms. Helix Energy Solutions Group, Inc. was formerly known as Cal Dive International, Inc. and changed its name to Helix Energy Solutions Group, Inc. in March 2006. Helix Energy Solutions Group was founded in 1990 and is headquartered in Houston, Texas.

Petrolifera Petroleum makes its living from the natural resources of South America. As a crude oil and natural gas exploration and production company, Petrolifera operates on more than 8 million acres of land located in Peru, Colombia, and Argentina. Petrolifera Petroleum Limited Argentine-based operations, which constitute the company's largest source of revenue, include a 100% stake in the Puesto Morales/Rinconada Concession in the Neuquen Basin. In 2007, Petrolifera produced an average of 8,000 bbl/d (barrels per day) of crude oil and more than 2,100 mcf/d (thousand cubic feet per day) of natural gas. Petrolifera Petroleum Limited largest shareholder is oil production company Connacher Oil and Gas, which owns about 25% of the company.

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.

SK Energy (formerly SK Corp.) is the energy and chemical affiliate of South Korea's SK Group, which also operates trading and telecommunications units. Korea's largest oil refiner (1.1 million barrels of daily refining capacity), SK Energy controls about 35% of Korea's fuel retailing market and operates 4,270 service stations. The firm is involved in oil exploration and production in 15 countries and has proved reserves 500 million barrels of oil equivalent. SK Energy imports coal and liquid petroleum gas (LPG), and claims a 44% share of the Korean LPG market. SK Energy supplies natural gas to Seoul and other cities in Korea. The company also makes lubricants, low-pollutant gasoline, and petrochemicals.

Spectrum ASA provides surveys, 2D and 3D seismic data processing, and electronic data management services for oil and gas exploration and production customers worldwide. Spectrum ASA provides information technology consultancy, network design, and system installation services, and has regional centers in Houston, London, Oslo, and Singapore. Spectrum ASA has also developed software that enables vintage seismic data to be loaded onto a workstation for interpretation. UK-based Spectrum Energy and Information Technology was founded in 1985. Spectrum ASA merged with Norway's Global Geo Services to form GGS-Spectrum Limited in 2005. Spectrum was spun out in 2008.

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