| Africa |
| Company |
Country |
| Naftal |
 Algeria |
| Sonatrach |
| Sonangol Group |
 Angola |
| Société Nationale des Pétroles du Congo |
 Congo |
| Star Africa Commodities & Minerals Limited |
 Ghana |
| Egyptian General Petroleum Corporation |
 Egypt |
| EGAS |
| Arabian Gulf Oil Company |
 Libya |
| National Oil Corporation |
| Madagascar Oil |
 Madagascar |
| Aiteo |
 Nigeria |
| Lekoil Nigeria Limited |
| Dangote |
| Nigerian National Petroleum Corporation |
| Astron Energy |
 South Africa |
| EasiGas |
| Engen Petroleum |
| iGas |
| Imvume |
| Gigajoule International |
| PetroSA |
| Sasol |
| Total South Africa |
| Wozani Berg Gasoline |
| Sudapet |
 Sudan |
| Tanzania Petroleum Development Corporation |
 Tanzania |
| Entreprise Tunisienne d'Activités Pétrolières |
 Tunisia |
| Somaliland National oil Company - NOCBBO |
 Somaliland |
| Asia |
| Company |
Country |
| Azerbaijan International Operating Company |
 Azerbaijan |
| SOCAR |
| Nobel Oil Group |
| Brunei Shell Petroleum |
 Brunei |
| Bahrain Petroleum Company |
 Bahrain |
| Petrobangla |
 Bangladesh |
| Myanma Oil and Gas Enterprise |
 Myanmar |
| China National Offshore Oil Corporation |
 China |
| China National Petroleum Corporation |
| CITIC Resources |
| Geo-Jade Petroleum |
| Shaanxi Yanchang Petroleum |
| Sinochem |
| China Petrochemical Corporation |
| Southernpec |
| The Hong Kong and China Gas Company |
| United Energy Group |
| Indian Oil Corporation Limited |
 India |
| Oil and Natural Gas Corporation |
| Oil India |
| Bharat Petroleum |
| Hindustan Petroleum |
| Nayara Energy |
| Reliance Industries |
| Cairn India |
| GAIL |
| Gujarat State Petroleum Corporation |
| MedcoEnergi |
 Indonesia |
| Pertamina |
| National Iranian Oil Company |
 Iran |
| North Oil Company |
 Iraq |
| South Oil Company |
| Missan Oil Company |
| Midland Oil Company |
| Delek |
 Israel |
| Isramco |
| Modiin Energy |
| Eneos |
 Japan |
| Inpex |
| JAPEX |
| KazMunayGas |
 Kazakhstan |
| Kuwait Petroleum Corporation |
 Kuwait |
| Kuwait Petroleum International (Q8) |
| Consolidated Contractors Company |
 Lebanon |
| Petronas |
 Malaysia |
| Petroleum Development Oman |
 Oman |
| Oil & Gas Development Company |
 Pakistan |
| Pakistan Petroleum |
| Pakistan Oilfields |
| Mari Petroleum Company Limited |
| Petron Corporation |
 Philippines |
| Philippine National Oil Company |
| QatarEnergy |
 Qatar |
| Saudi Aramco |
 Saudi Arabia |
| Singapore Petroleum Company |
 Singapore |
| Ceylon Petroleum Corporation |
 Sri Lanka |
| Korea National Oil Corporation |
 South Korea |
| Korea Gas Corporation |
| CPC Corporation |
 Taiwan |
| PTT |
 Thailand |
| Thai Oil |
| Timor Gap |
 Timor Leste |
| Türkiye Petrolleri Anonim Ortaklığı |
 Turkey |
| Çalık Enerji |
| Aladdin Middle East Ltd. ("AME") |
| Abu Dhabi National Oil Company |
 United Arab Emirates |
| Emirates National Oil Company |
| Uzbekneftegaz |
 Uzbekistan |
| Petrovietnam |
 Vietnam |
| Vietsovpetro |
| Europe |
| Company |
Country |
| OMV |
 Austria |
| RAG |
| Petrol AD |
 Bulgaria |
| INA – Industrija Nafte |
 Croatia |
| Moravské naftové doly |
 Czech Republic |
| Ørsted A/S |
 Denmark |
| Atlantic Petroleum |
 Faroe Islands |
| Neste |
 Finland |
| TotalEnergies |
 France |
| Engie |
| Perenco |
France |
.svg.png) United Kingdom |
| Wintershall DEA |
 Germany |
| HelleniQ Energy |
 Greece |
| MOL Group |
 Hungary |
| Maxol |
 Ireland |
| Anonima Petroli Italiana |
 Italy |
| Edison |
| Eni |
| Erg |
| Saras S.p.A. |
| Ascom Group |
 Moldova |
| Makpetrol |
 North Macedonia |
| Aker BP |
 Norway |
| Bayerngas |
| DNO ASA |
| Equinor |
| InterOil |
| Noreco |
| Rocksource |
| Grupa Lotos |
 Poland |
| PGNiG |
| PKN Orlen |
| Galp Energia |
.svg.png) Portugal |
| Partex Oil and Gas |
| OMV Petrom |
 Romania |
| Rompetrol |
| Bashneft |
 Russia |
| Gazprom |
| Itera |
| Lukoil |
| Novatek |
| Rosneft |
| Rusneftegaz |
| Russneft |
| Sakhalin Energy |
| Surgutneftegas |
| Tatneft |
| Naftna Industrija Srbije |
 Serbia |
| Moeve |
 Spain |
| Repsol |
| Lundin Energy |
 Sweden |
| Naftogaz |
 Ukraine |
| BP |
United Kingdom |
| Cairn Energy |
| Centrica |
| Dana Petroleum |
| Premier Oil |
| Regal Petroleum |
| Shell |
| Tullow Oil |
| North America |
| Company |
Country |
| ARC Resources |
.svg.png) Canada |
| Baytex Energy |
| Canadian Natural Resources |
| Cenovus Energy |
| Crescent Point Energy |
| Enbridge |
| Enerplus |
| First Calgary Petroleums |
| Frontera Energy |
| Imperial Oil |
| Irving Oil |
| MEG Energy |
| Nalcor Energy |
| Obsidian Energy |
| Questerre |
| Ridgeback Resources |
| Suncor Energy |
| Syncrude |
| ShaMaran Petroleum |
| TC Energy |
| Vermilion Energy |
| Cuba Petróleo Union |
 Cuba |
| Uno |
.svg.png) Honduras |
| Pemex |
 Mexico |
| Petrotrin |
 Trinidad and Tobago |
| Antero Resources |
 United States |
| APA Corporation |
| Berry Corporation |
| Blacksands Pacific |
| California Resources Corporation |
| Chevron Corporation |
| Chord Energy |
| CNX Resources |
| ConocoPhillips |
| Continental Resources |
| Devon Energy |
| Diamondback Energy |
| EOG Resources |
| EQT Corporation |
| Expand Energy |
| ExxonMobil |
| Finley Resources |
| Greka Energy |
| Hess Corporation |
| HKN, Inc. |
| Koch Industries |
| Laredo Petroleum |
| Murphy Oil |
| Occidental Petroleum |
| Ovintiv |
| Range Resources |
| SandRidge Energy |
| Shell Oil Company |
| SM Energy |
| Valero Energy |
| Vaalco Energy |
| XTO Energy |
| Oceania |
| Company |
Country |
| Australian Worldwide Exploration (AWE) |
.svg.png) Australia |
| BHP |
| Origin Energy |
| Santos |
| Woodside Energy |
| Todd Corporation |
 New Zealand |
| Oil Search |
 Papua New Guinea |
| South America |
| Company |
Country |
| Bridas Corporation |
 Argentina |
| Enarsa |
| YPF |
| YPFB |
 Bolivia |
| Dommo Energia |
 Brazil |
| Ipiranga |
| Synergy Group |
| Petrobras |
| Empresa Nacional del Petróleo |
 Chile |
| Empresas Copec |
| Ecopetrol |
 Colombia |
| Petroecuador |
 Ecuador |
| Petropar |
 Paraguay |
| Petroperú |
 Peru |
| ANCAP |
 Uruguay |
| PDVSA |
 Venezuela |
