| Company Name | Entity type | Parent/Subsidiary/Independent | Headquarters | No. of Employees | Annual Revenue ($M) | |
|---|---|---|---|---|---|---|
| China National Petroleum Corp | Government | Parent | China | XYZ | 505,323 | |
| China Petroleum & Chemical Corp | Public | Subsidiary (of China Petrochemical Corp) | China | 368,009 | 454,171 | |
| China Petrochemical Corp | Government | Parent | China | XYZ | 432,484 | |
| PetroChina Co Ltd | Public | Subsidiary (of China National Petroleum Corp) | China | 386,912 | 425,723 | |
| Shell plc | Public | Parent | United Kingdom | 103,000 | 316,620 | |
| Trafigura Group Pte Ltd | Private | Subsidiary (of Trafigura Beheer BV ) | Singapore | 12,479 | 244,280 | |
| TotalEnergies SE | Public | Parent | France | 102,579 | 218,945 | |
| BP Plc | Public | Parent | United Kingdom | 87,800 | 210,130 | |
| Chevron Corp | Public | United States of America | 45,600 | 196,913 | ||
| Eversource Energy | Public | Parent | United States of America | 10,171 | 11,906 | |
| Gazprom | Public | Parent | Russia | 492,200 | 167,613 | |
| Phillips 66 | Public | Parent | United States of America | 14,000 | 147,399 | |
| Marathon Petroleum Corp | Public | Parent | United States of America | 18,200 | 150,090 | |
| Valero Energy Corp | Public | Parent | United States of America | 9,886 | 144,766 | |
| Gunvor Group Ltd | Private | Parent | Switzerland | 1,500 | 135,000 | |
| Petroleos Mexicanos | Government | Parent | Mexico | 120,054 | 118,562 | |
| Reliance Industries Ltd | Public | Parent | India | 389,414 | 113,586 | |
| ENEOS Holdings Inc | Public | Parent | Japan | 44,617 | 110,937 | |
| Rosneft Oil Co | Public | Russia | 334,600 | 107,241 | ||
| Equinor ASA | Public | Parent | Norway | 23,449 | 106,848 | |
| Petroleo Brasileiro SA | Public | Parent | Brazil | 46,730 | 102,546 | |
| Eni SpA | Public | Parent | Italy | 33,142 | 101,349 | |
| SK Inc | Public | Parent | South Korea | 4,120 | 104,225 | |
| Lukoil Oil Co | Public | Parent | Russia | 102,424 | 92,790 | |
| PTT Public Co Ltd | Public | Parent | Thailand | 30,772 | 90,467 | |
| Orlen SA | Public | Poland | 64,494 | 88,753 | ||
| PT Pertamina (Persero) | Government | Parent | Indonesia | 33,596 | 84,888 | |
| Oil and Natural Gas Corp Ltd | Public | Parent | India | 25,993 | 87,273 | |
| Petroliam Nasional Bhd | Government | Parent | Malaysia | 49,771 | 85,344 | |
| Idemitsu Kosan Co Ltd | Public | Parent | Japan | 14,363 | 69,859 | |
| Bharat Petroleum Corp Ltd | Public | India | 8,713 | 67,994 | ||
| Koc Holding AS | Public | Parent | Turkey | 119,378 | 67,469 | |
| Repsol SA | Public | Parent | Spain | 25,059 | 63,748 | |
| Hindustan Petroleum Corp Ltd | Public | Subsidiary (of Oil and Natural Gas Corp Ltd) | India | 8,504 | 59,449 | |
| CNOOC Ltd | Public | Subsidiary (of China National Offshore Oil Corp) | China | 19,511 | 58,904 | |
| SK Innovation Co Ltd | Public | Parent | South Korea | 1,419 | 59,205 | |
| ConocoPhillips | Public | Parent | United States of America | 9,900 | 56,141 | |
| QatarEnergy | Government | Parent | Qatar | XYZ | 52,256 | |
| Enterprise Products Partners LP | Public | Parent | United States of America | 7,447 | 49,715 | |
| Plains All American Pipeline LP | Public | Subsidiary (of Plains GP Holdings LP) | United States of America | 4,200 | 48,712 | |
| Plains GP Holdings LP | Public | Parent | United States of America | 4,200 | 48,712 | |
| World Kinect Corp | Public | Parent | United States of America | 5,289 | 47,711 | |
| GS Caltex Corp | Private | Joint Venture | South Korea | 3,291 | 45,339 | |
| OMV AG | Public | Parent | Austria | 20,592 | 42,677 | |
| Gazprom Neft | Public | Subsidiary (of Gazprom) | Russia | 82,960 | 41,196 | |
| CPC Corp | Government | Parent | Taiwan | 16,682 | 41,022 | |
| Cenovus Energy Inc | Public | Parent | Canada | 5,998 | 38,690 | |
| HollyFrontier Corp | Private | Subsidiary (of HF Sinclair Corp ) | United States of America | XYZ | 38,205 | |
| VNG AG | Private | Subsidiary (of EnBW Energie Baden-Wurttemberg AG ) | Germany | XYZ | XYZ | |
| Imperial Oil Ltd | Public | Subsidiary (of Exxon Mobil Corp) | Canada | 5,300 | 37,577 |
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