• Nigeria National Petroleum Corporation (NNPC)
• Shell Petroleum Development Company
• Snepco
• Mobil Producing Nigeria/Exxonmobil
• Total E&P
• Chevron Nigeria
• EE Limited
• Grinaker Ltd
• Trans Ocean Nigeria
• Schlumberger Nigeria
• Galba
• Haliburton Energy
• Africa Oilfield Services Limited
• Atlas Cement Limited
• Saipem Construction
• Nigerian Agip Oil Company

• Nigerian Bottling Company
• Nigerdock
• Stolt Offshore.
• ABC Maritime
• Expro Group
• Red Band (Norway).
• Klara D
• Fred – Olsen Production W. A. Ltd.
• Globestar
• Snig (Nigeria) Ltd
• Coastal Inland Marine Services (Trico)
• Edison Chouest Offshore
• Bourbon Interoil Services
• OIS (Kenquip)
• Eagle Cement
• Dregdging International Services Nigeria Limited