| 1 (18) | China National Offshore Oil Corp * | CHN |  |
| 2 (21) | Samsung Corp * | MUL | |
| 3 (51) | State Grid Corporation of China * | CHN | |
| 4 (139) | SINTEF Group * | NOR | |
| 5 (196) | Lockheed Martin Corp * | USA | |
| 6 (198) | Aramco * | MUL | |
| 7 (252) | Shell * | MUL | |
| 8 (270) | Siemens * | MUL | |
| 9 (308) | Det Norske Veritas * | MUL | |
| 10 (360) | Schlumberger * | MUL | |
| 11 (404) | Schlumberger, United States | USA | |
| 12 (454) | Petrobras * | MUL | |
| 13 (495) | Saudi Arabian Oil Co, Saudi Arabia | SAU | |
| 14 (509) | China Petroleum and Chemical Corporation * | CHN | |
| 15 (548) | Petrobras, Brazil | BRA | |
| 16 (599) | Marine Design and Research Institute of China | CHN | |
| 17 (615) | China National Petroleum Corp * | CHN | |
| 18 (634) | Equinor ASA * | MUL | |
| 19 (635) | Wuhan Textile University | CHN | |
| 20 (654) | Baker Hughes * | MUL | |
| 21 (719) | PowerChina Huadong Engineering Corp Ltd, China | CHN | |
| 22 (736) | Equinor ASA, Norway | NOR | |
| 23 (747) | PetroChina Co Ltd | CHN | |
| 24 (787) | WSP Global * | MUL | |
| 25 (811) | AECOM * | MUL | |
| 26 (824) | China Three Gorges Corp | CHN | |
|
