Amerada Hess Corporation - Amerada Hess is a large independent engaged in the exploration, production, refining, transportation and marketing of petroleum products.
BP Amoco - BP and Amoco have merged to form one of the world's leading providers of energy and petrochemicals.
Chevron Corporation - Chevron Corporation is one of the world’s largest integrated petroleum companies.
Conoco Inc. - Conoco Inc. is a fully-integrated energy company, active in 40 countries and involved in every aspect of the oil and gas industry.
Elf Aquitaine - Elf Aquitaine and TotalFina have merged to form one of the world's largest integrated oil companies.
Exxon Corporation - Exxon conducts exploration and/or production operations in 30 countries around the world. The global downstream business includes operations in more than 75 countries.
Hindustan Petroleum Corporation Ltd. - One of the largest integrated petroleum companies in India.
Imperial Oil Ltd. (Esso) - Imperial is one of Canada's largest corporations and has been a leading member of the petroleum industry for more than a century.
TAG - Since 1908 Worldwide Drilling and Workover Contractor, Manufacturer of Drilling Equipment,HWDP, Drill Collars, Kellys, Kelly Valves, Wellheads, X-Mas, Trees, Winches and Ball Valves, Machining, Threading and Warehousing.
LUKOIL - LUKOIL is Russia's leader in the energy and fuel industry, harmoniously combining all lines of oil business from oil production to the sale of petroleum products.
Marathon Ashland Petroleum LLC - Marathon Ashland Petroleum LLC is a combination of two of the nation's premier energy companies, engaged in the exploration, production, refining, transportation and marketing of petroleum products.
Mobil Oil Corporation - Mobil operates in over 125 countries, spanning the energy chain and spanning the globe.
Neste Group (Fortum) - Energy company Fortum's Oil & Gas Division was formed through the combination of the oil and gas businesses of the Finnish oil, energy, and chemicals company Neste. Fortum's new organisation became effective at the beginning of 1999.
Norsk Hydro ASA - Norsk Hydro is an industrial company based on the use of natural resources, with the aim of meeting needs for food, energy and materials.
Petro-Canada - Petro-Canada is a major Canadian oil and gas company and a leader in the Canadian petroleum industry, an integrated company, with a balanced portfolio of businesses spanning both the upstream and downstream sectors of the industry.
Phillips Petroleum Company - Phillips Petroleum Company is a major, integrated oil company based in the United States with worldwide operations.
Questar Corporation - Questar Corp., is an integrated energy resources and services company headquartered in Salt Lake City. Through subsidiaries, it engages in energy development, production, gathering, processing, transmission, storage, and marketing.
REPSOL YPF - REPSOL and YPF merged in 1999 to form a large integrated oil company engaged in exploration, production, marketing, petrochemicals, and electricity generation.
Royal Dutch / Shell - The Royal Dutch/Shell Group of Companies - usually known as Shell - has grown out of an alliance made in 1907 between Royal Dutch Petroleum Company in the Netherlands and the "Shell" Transport and Trading Company in the UK. Today the Group has five core businesses: Exploration & Production, Oil Products, Chemicals , Gas & Power Generation, and Renewables.
Sinochem International Oil Co. - Beijing-based company involved in oil exploration, development, refining and distribution.
STATOIL - Statoil - Den norske stats oljeselskap a.s - is one of the world's largest net sellers of crude oil, and a substantial supplier of natural gas to Europe. It ranks as the biggest retailer of petrol and other oil products in Scandinavia.
Texaco, Inc. - Operating in some 150 countries, Texaco and its affiliates explore for, find and produce oil and natural gas; manufacture and market high-quality fuels and lubricant products; operate trading, transportation and distribution facilities; and produce alternate forms of energy for power, manufacturing and chemicals.
TotalFina - TotalFina and Elf Aquitaine have merged to form one of the world's largest integrated oil companies.
UNOCAL - UNOCAL is an integrated oil company engaged in exploration, development, marketing, petrochemicals, and geothermal energy.