1. The Shell Petroleum Development Company of Nigeria Limited. (SPDC Lagos, Warri and Port Harcourt)
2. Total Exploration & Production Nigeria Limited
3. ExxonMobil
4. Nigeria Agip Oil Company Limited (NAOC)
5. Agip Energy and Natural Resources Nigeria Limited (AENR)
6. Nigerian National Petroleum Corporation
7. Aluminum Smelter Company of Nigeria Limited (ALSCON)
8. Michelin Nigeria Limited
9. Protrack Shipping Nigeria Limited
10. New Genesis Executive Security Limited
11. Nigeria Liquefied Natural Gas Limited, Bonny (NLNG)
12. Ponticelli Nigeria Limited
13. Solstad Offshore
14. Profield Nigeria Limited for Enterprise Philippe Lassarat S.A.
15. Craig Group
16. Pangasari Services Singapore/APAC Foods and Services
17. Nigeria LNG
18. CSoffshore
19. International Petroleum Company (IPCO)
