| Business | Phone |
| Beacon Petroleum Management 1900 Preston Rd, Plano 75093 | (972) 758-9393 |
| Geo Science Data Management 2600 K Ave, Plano 75074 | (972) 509-1522 |
| International Drilling Schools 3324 San Simeon Way, Plano 75023 | (972) 618-0563 |
| Petrotel Inc 5240 Tennyson Pkwy, Plano 75024 | (972) 473-2767 |
| Starcrest Energy 3905 Jamestown Pl, Plano 75023 | (972) 596-7944 |
| Suncoast Technical Svc Inc 101 E Park Blvd 821, Plano 75074 | (972) 424-6553 |