Companhias de Petróleo e Gás



    Abu Dhabi National Oil Company (ADNOC).

    AGIP (Azienda Generale Italiana Petroli) since 1998 ENI-Agip Exploration and Production.

    Alliance Gas (now: STATOIL).

    Amerada Hess.

    Anadarko.

    Anglo Siberian Oil Company plc.

    Anonima Petroli Italiana (API)

    Anzoil

    ARCO (Atlantic Richfield Company) = BP-Amoco.

    Aruba Petroleum.

    Australian Oil & Gas Corporation Ltd.

    Australian Worldwide Exploration Limited

    Bay State Gas.

    BEB (Hannover).

    Bentec Drilling (Preussag DE).

    Benton Oil & Gas Company.

    BG Group (British Gas).

    Bharat Petroleum.

    BHP Billiton.

    BJ Services Company.

    Black Hills Exploration and Production.

    Bligh Oil & Minerals (AU).

    Bow Valley Energy Ltd. (US).

    BP Amoco ARCO.

    Bula Resources (Ireland).

    Cabot Oil & Gas Corporation.

    Cairn Energy PLC (Scotland).

    Caltex Petroleum Company.

    CanArgo Energy.

    CanBaikal Resources Inc.

    Chevron.

    ChevronTexaco.

    Chieftain International (now: Huntoil).

    Chinese Petroleum Corporation (Taiwan TW).

    Compagnie Générale de Géophysique (CGG).

    CONOCO (US) (incl. Gulf Canada).

    ConocoPhillips.

    CSIRO Exploration and Mining.

    Dana Petroleum plc.

    Deutag Drilling (Preussag DE) (now: KCA DEUTAG Drilling Limited)

    Devon Energy Corporation (US) (incl. Santa Fe Snyder Corporation, PennzEnergy).

    Dominion Exploration & Production.

    Elf Aquitaine (TOTAL FINA ELF).

    Empresa Colombiana de Petróleos (ECOPETROL).

    Empresa Nacional del Petróleo - Chile (ENAP).

    Encana.

    Energy Africa EA.

    Eni.

    Enterprise Oil plc. (UK).

    Equity Oil Company.

    ESSO Deutschland

    Evergreen Resources (US)

    ExxonMobil

    FINA (now: TotalFinaElf)

    Fortum Group (FI).

    Gás de Portugal (now: Galp Energia)

    Gasum Oy (FI)

    Gaz de France

    Geoscience Ltd (UK)

    German Oil & Gas Egypt (GEOGE)

    Givot Olam Oil Exploration Israel

    Gulf Canada (now: Conoco)

    Halliburton Company

    Hibernia

    Hindustan Petroleum Corporation Limited (HPCL)

    Hunt Oil Company

    Hurricane Hydrocarbons Ltd. (CA)

    Husky Oil

    Iceland Oil

    Indo-Pacific Energy Ltd (NZ)

    Institut Francais du Petrole (IFP)

    Instituto Mexicano del Petrólio

    Kavernen Bau und Betriebs-GmbH (KBB)

    KCA Deutag Drilling Limited

    Kerr-McGee (US)

    Korea National Oil Corporation (KNOC)

    Krosno Oil and Gas Enterprise (Poland)

    Kuwait National Petroleum Company (KNPC)

    Lasmo (now: ENI).

    Louis Dreyfus Natural Gas (now: Dominion Exploration & Production).

    Lukoil.

    Lundin Oil AB.

    Maersk Olie og Gas (oil and gas exploration and production).

    Marathon Oil Company.

    Max Planck Institut für Kohlenforschung MÜLHEIM a/d RUHR.

    MMS Petroleum.

    Mobil (=ExxonMobil)

    Mosaic Oil

    Murphy Oil Corporation

    National Centre for Petroleum geology and Geophysics (AU).

    Nederlandse Aardolie Maatschappij (NAM).

    Nederlandse Gasunie.

    Neste Oy (Finland) = Fortum Group.

    Nexen Inc. (CA) (formerly Canadian Occidental Petroleum Ltd.).

    New Zealand Oil & Gas Ltd.

    Noble Drilling Corporation.

    NGI-Norges Geotekniske Institutt.

    NIS-NAFTAGAS.

    Norsk Hydro.

    Novus Petroleum (AU).

    Occidental Petroleum Company.

    ODIN Energi ApS (Danmark).

    Offshore Kazakhstan International Operating Company N.V. (OKIOC).

    Oil and Natural Gas Corporation India.

    OMV Erdöl und Erdgas.

    Onako.

    P & G Consultores C.A. (Venezuela).

    PAZ (Israel)

    Pennzoil Company

    PERTAMINA Indonesian State Oil & Gas Company

    Perupetro SA

    Petrobras

    Petro Canada

    Petrodril

    Petrogal (PT)

    Petróleos de Venezuela

    Petróleos Mexicanos

    Petroliam Naional Berhad (PETRONAS)

    Petrosys

    Petrotrin (Petroleum Company of Trinidad and Tobago Ltd)

    Petroz (AU)

    Phillips Petroleum Company

    Premier Oil

    PTT Exploration and Production Public Company Ltd (Thailand)

    Qatar General Petroleum Corporation

    Ramco Energy Plc (Scotland)

    REPSOL YPF

    RWE

    RWE-DEA

    RWE-DEA Norge

    Saga Petroleum = Norsk Hydro

    Santos

    Saudi Aramco

    Schlumberger

    Shell International / Shell NL / FR / DE / UK / CH

    Shell (US)

    SINTEF Petroleum Research (Trondheim NO)

    Staatsolie (Suriname)

    Statoil

    Talisman energy (CA)

    TAMOIL

    Tap Oil

    Techdrill International

    Teikoku (JP)

    Texaco

    Tokyo Gas

    TotalFinaElf

    TransCanada

    Triton (US)

    Turkish Petroleum Corporation (TPAO)

    Tyumen Oil Company

    UNOCAL

    VEBA Oel (Gelsenkirchen)

    VEBA Oel und Gas (Essen) - früher u.a. Deminex GmbH (now: mostly Petro-Canada)

    Wingas GmbH

    Wintershall AG (BASF)

    Wintershall Nederland