- 70 Electric
- Cardinal Services Inc
- Elder Offshore Leasing Co
- Laredo Offshore Svc Inc
- Liberty Services Inc
- LIS Energy Svc
- M & M Wireline & Offshore Svc
- Macco Daniels
- Natco National Tank Co
- OFS Inc
- Olsco Inc
- Progressive Technical Svc Inc
- Schlumberger
- Schlumberger Well Svc
- Superior Energy Svc Inc
- Tam International
- Tetra Applied Technologies
- Tool Tech INSPECTION Svc
- Tuboscope