OIL COMPANIES
- Chevron Pacific Indonesia
- PT Chevron Indonesia Company
- Conoco Phillips
- Kondur Petroleum S.A
- Medco E & P Indonesia PT
- TOTAL E&P Indonesie
- VICO Indonesia / Virginia Indonesia Co., LLC
OIL SERVICES COMPANIES
- Baker Hughes Indonesia / Baker Hughes INTEQ
- BJ. Services Indonesia PT
- CNOOC
- Geoprolog Intiwijaya PT
- Halliburton
- National Oilwell Varco
- Owen Oil Tools
- Petrochina
- Weatherford
DRILLING COMPANIES
- Apexindo Pratama Duta PT
- But China Oil Services Limited
- But Frontier
- But Nabors
- Century Dinamik Drilling PT
- Daya Alam Teknik Inti PT
- Diamond Offshore
- But Transocean
- Mermaid Drilling Co.Ltd.
- Patra Drilling Company PT
- Petrolog Multi Usaha Mandiri PT
- Plumpang Raya Anugrah PT
- Saripari Abadi Pertiwi PT
- Seadrill