| Name | Country | Market Cap (US$) |
|---|
| Compania Espanola de Petroleos SA (CEPSA) | Spain | 29,748 |
| Praxair, Inc. | United States | 28,791 |
| INPEX Holdings Inc | Japan | 25,382 |
| NOVATEK | Russia | 24,728 |
| Formosa Petrochemical Corp. | Taiwan | 23,534 |
| Petro-Canada Limited | Canada | 23,122 |
| Canadian Oil Sands Trust | Canada | 22,744 |
| PTT PCL | Thailand | 22,215 |
| Talisman Energy Inc. | Canada | 19,391 |
| Nexen Inc. | Canada | 17,342 |
| Spectra Energy Corp. | United States | 17,046 |
| Galp Energia, SGPS, S.A. | Portugal | 15,316 |
| China Oilfield Services Ltd | China | 15,098 |
| PTT Exploration & Production PC, Ltd | Thailand | 14,441 |
| Tatneft OAO | Russia | 13,760 |
| Rabigh Refining & Petrochemical Company | Saudi Arabia | 13,142 |
| Enterprise Products Partners LP | United States | 12,844 |
| Southwestern Energy Company | United States | 12,526 |
| Nabors Exchangeco (Canada) Inc. | Bermuda | 12,283 |
| Continental Resources, Inc | United States | 11,809 |
|