| Business | Phone |
| Seegers Drilling Companies 8222 Douglas Ave 790, Dallas 75225 | (214) 891-0205 |
| Trojan Drilling & Operating Co 5950 Berkshire Ln, Dallas 75225 | (214) 891-3366 |
| William Moss Corp 3525 Turtle Creek Blvd, Dallas 75219 | (214) 528-5461 |
| New Park Drilling Fluids Inc 15950 Dallas Pkwy 400, Dallas 75248 | (972) 387-5220 |
| Texplor Drilling Svc 2615 Cartwright St, Dallas 75212 | (214) 678-0643 |
| Tri-County Drilling Inc 8325 Forney Rd, Dallas 75227 | (214) 388-0059 |