Companies

Oil and Gas Producing Companies

National Oil Companies (wholy or primarily government owned)

• Abu Dhabi National Oil Co. (ADNOC)
• China National Offshore Oil Corp. Ltd. (CNOOC)
• China National Petroleum Corp. (CNPC)
• Chinese Petroleum Corp. [Taiwan]
• Dansk Olie og Naturgas AS (DONG) [Denmark]
• Egyptian General Petroleum Corp. (EGPC)
• Empresa Colombiana de Petroleos (Ecopetrol) [Colombia]
• Empresa Nacional del Petroleo (ENAP) [Chile]
• Fortum Oy [Finland]
• Gazprom [Russia]
• Japan Petroleum Exploration
• Kuwait Petroleum Corp. (KPC)
• Myanma Oil & Gas Enterprise [Myanmar (Burma)]
• National Iranian Oil Co. (NIOC)
• Nigerian National Petroleum Corp.
• Oil & Natural Gas Corp. Ltd. (ONGC) [India]
• Perez Companc SA (PECOM) [Argentina]
• Pertamina [Indonesia]
• Petroleo Brasilerio SA (Petrobras)
• Petroleos del Ecuador (PetroEcuador)
• Petroleos del Peru (Petroperu)
• Petroleos de Venezuela SA (PDVSA)
• Petroleos Mexicanos (PEMEX)
• Petroleum Co. of Trinidad and Tobago Ltd. (Petrotrin)
• Petroleum Development Oman LLC
• Petroleum Exploration & Production Authority (PEPA) [Yemen]
• Petronas [Malaysia]
• PTT Exploration & Production Public Co. Ltd. (PTTEP) [Thailand]
• Qatar Petroleum Corp.
• Rompetrol [Romania]
• Saudi Arabian Oil Co. (Saudi Aramco)
• Sonangol [Angola]
• Sonatrach [Algeria]
• State Oil Co. of Suriname Ltd. (Staatsolie)
• Statoil ASA [Norway]
• Turkiye Petrolleri Anonim Ortakligi (TPAO) [Turkey]
• PetroVietnam

Integrated Global (Major) Companies

• Amerada Hess Corp.
• BP plc
• ChevronTexaco Corp.
• ConocoPhillips Co.
• ENI SpA
• ExxonMobil Corp.
• Kerr-McGee Corp.
• Marathon Oil Corp.
• Murphy Oil Corp.
• Occidental Petroleum Corp.
• Petro-Canada
• Shell (Royal Dutch/Shell Group)
• TotalFinaElf

Additional (Independent) Companies – U.S.

• Abraxas Petroleum Corp.
• Anadarko Petroleum Corp.
• Apache Corp.
• Berry Petroleum Co.
• Burlington Resources Inc.
• Cabot Oil & Gas Corp.
• Callon Petroleum Co.
• Chesapeake Energy Corp.
• CMS Energy Corp.
• Denbury Resources Inc.
• Devon Energy Corp.
• El Paso Corp.
• Energen Corp.
• EOG Resources Inc.
• Equitable Resources
• Evergreen Resources Inc.
• Forest Oil Corp.
• Houston Exploration Co.
• Koch Industries Inc.
• Newfield Exploration Co.
• Noble Energy
• Nuevo Energy Co.
• Ocean Energy Inc.
• Pioneer Natural Resources Co.
• Plains Resources Inc.
• Pogo Producing Co.
• Ruwco Oil & Gas Corp.
• Questar Corp.
• Seneca Resources Corp.
• Stone Energy Corp.
• Swift Energy Co.
• Unocal Corp.
• Vintage Petroleum Inc.
• Westport Resources Corp.
• Williams Companies Inc.
• XTO Energy

SERVICE COMPANY LINKS

• ABB Vetco Gray
• Baker Hughes
• Baroids
• Clough Engineering
• Coflexip Stena Offshore
• Core Lab
• Crocker Data Processing
• Expro Group
• Halliburton
• M-I Drilling Fluids
• Rheochem
• Schlumberger Limited
• Transfield Construction
• Weatherford
• Wood Group
• Laveraged Resources Co ., Ltd