Petroleum Companies Worldwide

    Abu Dhabi National Oil Company (ADNOC), United Arab Emirates
    Anadarko Petroleum Corporation, The Woodlands, Texas, United States of America; Independent
    ANCAP, Uruguay
    Apache Corporation, Houston, Texas, United States of America; Independent
    Arabian Gulf Oil Company (AGOCO), Libya
    Assam Oil Company Ltd. (ACL), India
    Atlantic Petroleum, Faroe Islands
    Bharat Petroleum Corporation Limited, India
    BG Group, United Kingdom
    BHP Billiton, Australia
    BP, United Kingdom
    Cairn Energy, United Kingdom
    Canadian Natural Resources, Canada
    Chevron Corporation, San Ramon, California, United States of America
    CNOOC, China
    ConocoPhillips, United States of America
    Cupet, Cuba
    Devon Energy, United States of America
    DNO International, Norway
    Dong Energy, Denmark
    Ecopetrol, Colombia
    Empresa Nacional del Petróleo (ENAP), Chile
    Enbridge, Canada
    EnCana, Canada
    ENSCO International, United States of America
    Eni, Italy
    Essar Oil, India
    Entreprise Tunisienne d'Activites Petroliere (ETAP), Tunisia
    ExxonMobil, United States of America
    Galp Energia, Portugal
    Gazprom Neft, Russia
    Greka Energy, United States of America
    Grupa LOTOS, Poland
    Gujarat State Petroleum Corporation, India
    HKN, Inc. United States of America
    Hess Corporation, United States of America
    Hindustan Petroleum Corporation Ltd, India
    Husky Energy, Canada
    IB Daiwa, Japan
    Imperial Oil, Canada
    INA – Industrija Nafte, Croatia
    Indian Oil Corporation, India
    Inpex, Japan
    Japan Energy, Japan
    Japan Petroleum Exploration Company Limited (JAPEX), Japan
    KazMunayGas, Kazakhstan
    Korea National Oil Corporation (KNOC), South Korea
    Koch Industries, United States of America
    Kuwait National Petroleum Company Kuwait.
    Kuwait Oil Company, Kuwait
    Kuwait Petroleum Corporation, Kuwait
    LUKoil, Russia
    Maersk Oil, Denmark
    Marathon Oil Corporation, United States of America
    Maurel & Prom, France
    MedcoEnergi, Indonesia
    MOL Group, Hungary
    Naftna Industrija Srbije, Serbia
    Naftogas of Ukraine, Ukraine
    National Iranian Oil Company (NIOC), Iran
    National Oil Corporation, Libya
    Nexen, Canada
    Nippon Oil, Japan
    NNPC, Nigeria
    Oil and Gas Development Company Limited[1], Pakistan
    Occidental Petroleum, United States of America
    Oil India Limited, India
    Oman Oil Company (OOC), Oman
    OMV, Austria
    ONGC, India
    PKN Orlen S.A., Poland
    Pacific Rubiales Energy, Canada
    PSO, Pakistan
    Pakistan Petroleum Pakistan
    Pertamina, Indonesia
    Petróleos Mexicanos, Mexico
    Petróleos de Venezuela, Venezuela
    Petroleum Development Oman,(PDO)
    Perenco, France, United Kingdom
    Petrobras, Brazil
    PetroChina, China
    Petroecuador, Ecuador
    PetroKazakhstan, Canada
    Petrom, Romania
    PETRONAS, Malaysia
    Petronet LNG Limited, India
    Petroperu, Peru
    Petrotrin, Trinidad and Tobago
    PetroVietnam, Vietnam
    Polish Oil and Gas Company, Poland
    Plains Exploration & Production Company (PXP), United States of America
    PTT Public Company Limited, Thailand
    Qatar Petroleum, Qatar
    Reliance Industries Limited, India
    Repsol YPF, Spain
    Rompetrol, Romania
    Rosneft, Russia
    Royal Dutch Shell, Netherlands, United Kingdom
    Russneft, Russia
    RWE Dea, Germany
    Santos Limited, Australia
    Sasol, South Africa
    Saudi Aramco, Saudi Arabia (the largest in the world)
    Sinopec, China
    SNPC, Congo-Brazzaville
    Sonangol, Angola
    Sonatrach, Algeria
    Sovereign Group, USA, Russia
    Singapore Petroleum Company, Singapore
    Statoil, Norway
    State Oil Company of Azerbaijan, SOCAR Azerbaijan
    Sudapet, Sudan
    Suncor Energy, Canada
    Surgutneftegaz, Russia
    Syncrude, Canada
    Talisman Energy, Canada
    Todd Energy, New Zealand
    Total S.A., France
    Tullow Oil, United Kingdom
    Türkiye Petrolleri Anonim Ortaklığı (TPAO), Turkey
    Vaalco Energy Inc., United States of America
    Vallourec & Mannesmann - France
    Vegas Oil and Gas (Kriti), Egypt
    Wintershall, Germany
    Woodside Petroleum, Australia
    XTO Energy, United States of America
    YPF, Argentina
    YPFB, Bolivia