Dana Petroleum is an oil and natural gas exploration and production company with operations in the North Sea, as well as Australia, Egypt, Kenya, Morocco, Mauritania, and Senegal. Dana Petroleum plc has expanded its production activities in the North Sea, where Dana Petroleum plc has 16 producing fields. The company's growth strategy is to balance low-risk production from the UK North Sea with more aggressive high-risk international exploration and production (primarily in Egypt). At the end of 2007 Dana reported proved and probable reserves of 165.8 million barrels of oil equivalent. That year Dana Petroleum plc acquired Devon Energy's oil and gas business in Egypt for $375 million. In 2008 Dana was operating four producing fields in Egypt.

Berry Petroleum company was founded in 1909 and is headquartered in Denver, Colorado.Berry Petroleum Company engages in the production, development, acquisition, exploitation, and exploration of crude oil and natural gas in the United States. The company's properties are located in California, Texas, Utah, and Colorado. As of December 31, 2008, it had estimated proved reserves of 245.9 million barrels of oil equivalent. Berry Petroleum company also engages in the generation and sale of electricity. Berry Petroleum Company markets its crude oil to oil refiners or third party marketers.

Tidelands Oil & Gas' hopes that the rising tide of oil prices will lift its revenues. Through its subsidiaries, the company operates a number of natural gas and natural gas liquids (NGLs) transportation, processing, distribution, and storage projects in the northeastern states of Mexico (Chihuahua, Coahuila, Nuevo Le�n, and Tamaulipas) and in Texas. Sonora Pipeline operates an 80-mile natural gas pipeline and a gas processing plant in Texas Sonora Pipeline is owned by Frontera Pipeline, in which Tidelands has a 20% stake. Tidelands is also looking into developing a liquefied natural gas (LNG) terminal near Long Beach.

Enbridge Inc. engages in the transportation and distribution of crude oil and natural gas primarily in Canada and the United States. Its Liquids Pipelines segment involves in the construction and operation of crude oil mainline system and feeder pipelines that transport crude oil and other liquid hydrocarbons. The company’s Natural Gas Delivery and Services segment distributes natural gas to residential, commercial, industrial, and transportation customers in central and eastern Ontario, Quebec, and New Brunswick, as well as northern New York State; and owns interests in the United States portion of Alliance Pipeline, and Vector Pipeline, as well as transmission and gathering pipelines in the Gulf of Mexico. This segment also invests in Aux Sable, a natural gas fractionation and extraction business; and manages commodity marketing businesses, as well as perform commodity storage, transport, and supply management services. Its Sponsored Investments segment transports crude oil and other liquid hydrocarbons through common carrier and feeder pipelines, as well as transports, gathers, processes, and markets natural gas and natural gas liquids; owns a crude oil and liquids pipeline and gathering system, a 50% interest in the Canadian portion of Alliance Pipeline, and partial interests in various green energy investments. The company was formerly known as IPL Energy Inc. and changed its name to Enbridge Inc. in October 1998. The company was founded in 1949 and is headquartered in Calgary, Canada.

Oil and gas producer Surgutneftegas is one of the largest companies in the Russian oil sector. OJSC Surgutneftegas accounts for almost 13% of the country’s crude output and 25% of gas produced by domestic oil companies. Over many years, OJSC Surgutneftegas has been leading the industry in terms of exploratory and development drilling, as well as the number of production wells brought on stream. OJSC Surgutneftegas was the first in Russia to develop the complete cycle of gas production and processing, gas-based power generation, and output of finished products and petrochemical feedstock. Fifty-nine divisions of the company are involved in the whole range of prospecting and reservoir management operations, construction of facilities and pipelines, environmental safety, and process automation. Surgutneftegas’ crucial competitive advantage lies in advanced petroleum production technology successfully applied by its own service subdivisions. Oil is supplied to Russian refineries and exported to CIS and Western Europe.

Double Eagle Petroleum Co. was founded in 1972 and is headquartered in Casper, Wyoming.Double Eagle Petroleum Co., an energy company, engages in the exploration, development, production, and sale of natural gas and crude oil primarily in the Rocky Mountain Basins of the western United States. The company's principal properties include the Atlantic rim coal bed natural gas project located in south central Wyoming; the Pinedale Anticline property in the Green River basin of Wyoming; the Wind River basin in central Wyoming; the Moxa Arch and other areas located in southwest Wyoming; and the Christmas Meadows prospect in Utah. Double Eagle Petroleum Co. also engages in the transportation of gas through its intrastate gas pipeline. As of December 31, 2008, Double Eagle Petroleum Co. had estimated proved reserves of approximately 86.3 billion cubic feet of natural gas and approximately 420 thousand barrels of oil. Double Eagle Petroleum Co. also owned interests in a total of 1,125 producing wells and had an interest in 525,493 gross acres natural gas prone basins of the Rocky Mountains.

HPCL is a Fortune 500 company, with an annual turnover of Rs. 1,16,428 Crores and sales/income from operations of Rs 1,31,802 Crores (US$ 25,618 Millions) during FY 2008-09, having about 20% Marketing share in India and a strong market infrastructure. Corresponding figures for FY 2007-08 are: Turnover of Rs 1,03,837 Crores and sales/income from Operations of Rs.1,12,098 Crores (US$ 25,142 Million). Hindustan Petroleum is India's second-largest oil refiner (Indian Oil is #1, Bharat Petroleum is #3) and accounts for more than 16% of the country's total refining requirements. The company has two major refineries -- one in Mumbai, the other in the southern Indian city of Vishakapatnam -- and produces lubricants, aviation fuel, liquefied petroleum gas, and light diesel oil. Hindustan Petroleum also holds a 17% stake in a refinery at Mangalore and is establishing another refinery in the state of Punjab. Other businesses include pipelines, a lube refinery (with a 40% share of the lube oil market), and 8,330 gas stations nationwide. The Indian government owns 51% of the company, which was established in 1974.

Seahawk Drilling, Inc. was incorporated in 2008 and is based in Houston, Texas. Pride SpinCo, Inc. operates as a subsidiary of Pride International Inc. Seahawk Drilling, Inc. (NasdaqGS:HAWK.V) operates independently of Pride International Inc. as of August 24, 2009. Seahawk Drilling, Inc. provides contract drilling services to the oil and gas industry in that region of the US. Seahawk Drilling, Inc. has a fleet of about 20 jackup rigs (mobile elevating platforms) that operate in water and drill to depths of up to 25,000 ft. Seahawk Drilling provides both rigs and crews on a day-rate basis to customers that include both large and small independent oil and natural gas producers, drilling service providers, and Mexico's state-owned petroleum company PEMEX. In 2009 Seahawk Drilling was spun off from Pride International.

EnCore Oil plc (LSE:EO.) is a UK based oil and gas exploration and production (E&P) company quoted on AIM. EnCore Oil plc focuses on the UK Central North Sea and UK onshore regions. EnCore Oil plc also has offshore operations in Ireland, the Netherlands, and Western Sahara. The company used to explore for gold and silver but shifted its focus to acquiring interests in onshore exploration licenses. Oil Quest had started a drilling program with appraisal and exploration wells on the Isle of Wight, which EnCore Oil plc held as part of a consortium that included Northern Petroleum. In a reverse takeover in 2006, EnCore Oil plc acquired the EnCore group of companies.

Over the last 125 years ExxonMobil has evolved from a regional marketer of kerosene in the U.S. to the largest publicly traded petroleum and petrochemical enterprise in the world. Today we operate in most of the world's countries and are best known by our familiar brand names: Exxon, Esso and Mobil. We make the products that drive modern transportation, power cities, lubricate industry and provide petrochemical building blocks that lead to thousands of consumer goods. Some say gas, some say petrol, but ExxonMobil International Limited says cha-ching. The subsidiary is responsible for ExxonMobil's exploration, production operations, and gas marketing businesses in Europe and Commonwealth of Independent States. Its upstream units include Esso Exploration and Production UK Limited and Mobil North Sea Limited. The company also oversees the operation of the Fawley refinery, the largest in the UK (300,000 barrels of crude a day and 14% of the UK's petroleum products), and a network of 860 Esso-branded gas stations.

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