| Business | Phone |
| Geo Drilling Co 8620 N New Braunfels Ave, San Antonio 78217 | (210) 822-1402 |
| Patterson-Uti Drilling Co 518 Evans Ave, San Antonio 78209 | (210) 824-9419 |
| Texas Machining Enterprises 4633 Perrin Crk, San Antonio 78217 | (210) 657-5200 |
| A & J Construction Co 1707 Capitol Ave 10, San Antonio 78201 | (210) 733-1762 |
| Eagle Drilling 27411 Okent Dr, San Antonio 78258 | (830) 980-8257 |
| Vortex Drilling Inc 4412 Bluemel Rd, San Antonio 78240 | (210) 696-7114 |