• Chevron Pasific Indonesia
• ConocoPhillips
• Pertamina EP
• Pertamina Gas
• Pertamina RU
• Premier Oil
• Santos
• Hess
• ExxonMobil
• BP. Berau
• Pertamina Hulu Energy
• Petrochina International Jabung
• Citic Seram
• VICO
• Medco E & P
• Job Pertamina – Petrochina East Java
• Kangean Energy Indonesia
• Chevron Indonesia Company
• Total E & P
• Badak NGL
• Elnusa Tristar
• JOB Pertamina – Talisman
• Mitra Energi Buana
• etc.

• Chevron Geothermal Indonesia
• Pertamina Geothermal Kamojang
• Chevron Geothermal Salak
• etc.

• MTCN
• Mitra Energi Batam
• Krakatau Daya Listrik
• TIFICO
• Multidaya Prima Elektrindo
• etc.

• Saipem
• Rekayasa Industri
• Tripatra
• IKPT
• Timas Suplindo
• Truba Jaya
• Barata Industri
• Shinnetsko Prima
• Technip
• etc.

• Berlian Laju Tanker
• Schlumberger
• Weatherford
• Bauer
• Citra Yala Tama
• etc.