| Client | Location |
|---|
| Shell Petroleum Development Company |
Nigeria |
| Shell Nigeria Exploration and Production Company Ltd. |
Nigeria |
| Nigeria Petroleum Development Company |
Nigeria |
| Nigerian Agip Oil Company (NAOC) |
Nigeria |
| Nigeria Agip Exploration Limited |
Nigeria |
| Chevron Nigeria Limited |
Nigeria |
| Star Deep Water Petroleum Limited |
Nigeria |
| Elf Petroleum Nigeria Limited |
Nigeria |
| Mobil Producing Nigeria Limited |
Nigeria |
| Addax Petroleum Exploration (Nig.) Ltd. |
Nigeria |
| Esso Exploration and Producing Nig. Ltd. |
Nigeria |
| Pioneer Natural Resources Nig. Ltd. |
Nigeria |
| Petroleo Brasileo Nigeria Ltd. |
Nigeria |
| Pan Ocean Oil Corporation |
Nigeria |
| ENI Congo |
Congo |
| SINOPEC |
Sao Tome and Principe |
| Mobil Producing Nigeria Limited |
Nigeria |
| Frontier Oil Limited |
Nigeria |
