Murphy Oil Corp.
- A worldwide oil and gas exploration and production company with refining and marketing operations as well as retail gas stations.
- http://www.murphyoilcorp.com/

ZPL Energy LLC
- Operating partner and production management of joint venture assets in Nigeria and Equatorial Guinea.
- http://zplenergy.com

Coastal Energy
- Exploration and development in Thailand and Nevada.
- http://www.coastalenergy.com/

Williams Energy Services
- Offer a range of services, including natural gas gathering, processing and liquid pipelines, petroleum products pipeline and terminalling, refineries, exploration and production, energy marketing and trading, and electricity generation .
- http://www.williams.com/

TNK International
- Vertically integrated oil company operating primarily in the western half of Russia.
- http://www.tnk-bp.com/

CEF
- Republic of South Africa holding company. Operates producing facilities and gas-to-liquids plant. Retail sales. Awards exploration concessions. Stores crude oil.
- http://www.cef.org.za/

Tamoil
- This major operator in the oil and energy industry introduces its activities in the oil and energy sectors in Europe and Africa.
- http://www.tamoil.com

Sinclair Oil Corporation
- Based in Utah, U.S. Site includes history, services, and station locator.
- http://www.sinclairoil.com/

TotalFinaElf.com
- Major integrated oil and gas corporation. Based in France.
- http://www.total.com/

Chevron Corp.
- Produces and refines oil. Includes product information, community programs and learning center.
- http://www.chevron.com/

BP Global
- Supplier of petroleum, solar energy, petrochemicals, bitumen, LPG, lubricants, aviation fuels and fuel cards. Information on products, services, environment and society, plus press, careers and investor sections.
- http://www.bp.com/

Valero Energy Corp.
- Oil refiners with a throughput capacity of nearly 2 million barrels per day. Operates Valero and Diamond Shamrock gas stations and convenience stores. Provides information on services, environment issues, company news, investor data, and employment opport
- http://www.valero.com/

Citgo Petroleum
- Tulsa based global energy company.
- http://www.citgo.com/

ExxonMobil
- Petroleum manufacturer. Includes news and product and service information. [NYSE: XOM]
- http://www.exxonmobil.com

Blue Dolphin Energy Company
- Develops and operates oil and gas properties, transport processes, and storage for imported crude oil and refined products. (Nasdaq: BDCO).
- http://www.blue-dolphin.com/

Able Energy, Inc.
- Holding company whose subsidiaries provide retail distribution and the provision of services relating to, fuel oil, propane gas and natural gas. (Nasdaq: ABLE).
- http://www.ableenergy.com/

Coral Energy
- Provides a portfolio of energy-related products and services associated with wholesale natural gas and power marketing and trading.
- http://www.coral-energy.com/

YPF Sociedad Anonima
- An integrated oil and gas company that explores, distributes and sells petroleum and related products. Multilingual site. (NYSE:YPF)
- http://eng.repsol-ypf.com/

El Paso Corporation
- Operations from wellhead to the trading floor. Oil and gas production, and pipelines.
- http://www.elpaso.com

Sahara Group
- Nigeria-based energy-oriented conglomerate. Involved in refining and sale of petroleum products, exploration and development, and various oil industry services.
- http://www.sahara-group.com/

ConocoPhillips
- Third largest integrated energy company in the U.S. and the fifth largest refiner in the world.
- http://www.conocophillips.com/

Imperial Oil
- Exploration, production, refining and retail sales. Operates primarily in Canada. Involved in Cold Lake oil sands project.
- http://www.imperialoil.com/

Amerada Hess Corporation
- Exploration, production, refining, and retail sales. In 2001 operated 1115 net wells in US, Gabon, Indonesia, North Sea and Thailand.
- http://www.hess.com/

Apache Energy
- Owns and manages 950 wells in south and central Texas. Assistance in buying and selling leases and water rights in that area. Sells/leases a variety of field equipment including trucks, pump jacks, casing, and drilling rigs.
- http://www.apacheenergy.com/

Sunoco, Inc.
- Has refineries in the northeast US. Markets gasoline, motor oils, lubricants, and petrochemicals. Operates petroleum and crude oil pipelines.
- http://www.sunocoinc.com/

Rompetrol
- Vertically integrated company operating in Romania. Also a oilfield service company managing projects internationally.
- http://www.rompetrol.com/

Petrobras
- Brazilian oil producer with refineries, production and exploration areas, pipelines, and terminals. Includes a classroom to learn more about the industry.
- http://www2.petrobras.com.br/ingles/index.asp

Vietnam Oil and Gas Corporation
- Official web site. News, business opportunities, technology, community involvement.
- http://www.petrovietnam.com.vn/

Texaco Inc.
- Texaco Inc. finds and produces oil and natural gas; manufactures and markets fuels and lubricants; operates trading, transportation and distribution facilities; and produces alternate forms of energy.
- http://www.texaco.com

Royal Dutch/Shell Group
- Five core businesses are exploration/production, oil products, chemicals, gas and power Generation, and renewables.
- http://www.shell.com/

Saudi Aramco
- Saudi Arabian Oil Company produces, manufactures, markets and ships crude oil, natural gas and petroleum products to meet the global demand.
- http://www.saudiaramco.com/

OMV Oil
- Vertically integrated organization operating in central and eastern Europe. Carries on international exploration and production activities outside this core region. Based in Austria.
- http://omv.com/

Marathon Oil Company
- Operates in 18 states and many foreign areas. An integrated company including transportation, refining and product sales.
- http://www.marathon.com/

PetroChina
- Large integrated company operating in China. Exploration and production, refining, petrochemicals and retail marketing. Transmission and sales of natural gas.
- http://www.petrochina.com.cn/

BG Group
- Integrated natural gas company, including exploration, production, storage, transportation and distribution.
- http://www.bg-group.com/

Yukos
- Second largest petroleum producer and petrochemical company in Russia. Company news, business charts, information on environmental responsibility and social welfare policies.
- http://www.yukos.com/

Husky Energy Inc.
- Western Canada oil and gas production. Heavy Oil production. Exploration offshore, eastern Canada. Also operates pipelines, refineries and retail stores.
- http://www.huskyenergy.com/