- Alice Southern Equip Svc
- Bison Energy Partners
- Camino Agave Inc
- Chamar Construction
- D & D Oil Field Svc
- Duval Lease Svc
- Falcon Welding Svc Inc
- Frontier Services
- GSI
- Hawk Oilfield Svc
- Kobra Sales
- Lone Star Lease Svc
- Med-Loz Lease Svc
- Med-Loz Lease Svc Inc
- Mo-Vac Svc Co Inc
- Morales Dozer Svc
- Pool Well Svc
- Ram Production Svc
- S & S Specialties Inc
- South Texas Disposal
- South Texas Wellhead
- Umphres Production Svc
- Woody's Pipe & Supply
- Zapata Hotshot
