| Amerada Hess Indonesia | Job Pertamina- Talisman Jambi Merang | Star Energy |
| Anadarko | Lundin Oil & Gas B. V | Statoil Hydro |
| BP Indonesia | Marathon International Petroleum Limited | Talisman Sageri Ltd |
| Bunga Mas International Co. | Meindo Elang Indonesia | Tately NV |
| Conoco Philips Indonesia Inc. Ltd. | Murphy Semail Oil Company Ltd | TESCO Corporation |
| Derrick Solutions International | Murphy Oil Malaysia | Timas Suplindo |
| Earth Decision SA (Dubai) | Mobil Cepu Ltd. | Total E & P Indonesie |
| Enviro Energy | Petroleum Geo Services Asia Pacific | Transworld Seruway Ltd |
| Fairfield Indonesia | Premier Oil Natuna Sea Ltd | Tripatra Engineering |
| Genting Oil Natuna Pte. Ltd | PT Ceria Worley | UT Energy Services Sdn Bhd |
| Hess Indonesia | Salamander Energy Indonesia | Weatherford Indonesia |
| Horizon Geoconsulting | Salamander Energy Singapore Pte Ltd | Worley Parson |
| Irian Petroleum | Santos (Sampang) Pty Ltd | PT Century Dinamik Drilling |
| Inpex Corporation | PT. Scomi Oiltools | PT Pertamina (persero) |
| Japex Buton Ltd | Shell Global Solutions (Malaysia) | Qatar Petroleum |




