Carigali Hess Operating Co. Sdn. Bhd.
Carigali-PTTEPI Operating Sdn. Bhd.
Diamond Drilling OffShore Sdn. Bhd.
Ensco Gerudi (M) Sdn. Bhd.
Esso
Exxonmobil
Kencana HL Sdn. Bhd.
Lundin Malaysia
Murphy Oil Co. Limited
OGDCL
PCPP Operating Co.,Malaysia
Petrodar Operating Co. Sudan
Petrofac-RNZ
Petronas Carigali Sdn. Bhd.
Petrovietnam Drilling & Well Services Company
PVEP Bach Dang Exploration
Santos Exploration
Sarawak Shell Berhad
Schlumberger WTA (M) Sdn. Bhd.
Shahpadu Energy & Engineering Sdn. Bhd.
Talisman Malaysia Limited
Tioman Drilling Sdn. Bhd.
Transocean Drilling Sdn. Bhd.
Vietsovpetro
White Nile Petroleum Operating Co. Vietnam