- Brunei Shell Petroleum Co. Sdn. Bhd. (BLNG)
- Brunei LNG Sdn. Bhd. (BSP)
- Brunei Shell Marketing Sdn. Bhd
- Brunei Methanol Company (BMC)
- Royal Brunei Armed Forces, Ministry of Defense
- Public Works Dept. (JKR), Ministry of Development
- Royal Brunei Airlines
- Housing Development Board, Ministry of Development
- TOTAL FINA ELF
- Halliburton
- Foster Wheeler Eastern Pte. Ltd.
- KCA DEUTAG – Seria Drilling
- NABORS-AMRTUR (NADI) Drilling International
International Operations Clients
- Petronas Gas Berhad
- Basf Petronas Chemical Sdn Bhd
- Mtbe (M) Sdn Bhd.
- Polyethylene (M) Sdn Bhd
- Amoco Chemical (M) Sdn Bhd
- Petronas Carigali Sdn Bhd
- Eon (Proton Saga)
- Dow Chemical’s (Oeg) Optimal