| Business | Phone |
| Dowdco Inc 1545 Se 39th St, Oklahoma City 73129 | (405) 672-3013 |
| Helmerich & Payne Intl Drllng 5401 S Hattie Ave, Oklahoma City 73129 | (405) 677-8882 |
| Kal Drilling 11500 S Meridian Ave, Oklahoma City 73173 | (405) 691-1202 |
| Nabors Drilling Usa 5500 S Rockwell St, Oklahoma City 73179 | (405) 745-3457 |
| Patterson-Uti Drilling Co 6000 Sw 44th St, Oklahoma City 73179 | (405) 686-0006 |
| Unit Drilling Co 7101 Sw 29th St, Oklahoma City 73179 | (405) 745-4948 |
| Southwestern Drilling 105 N Hudson Ave # 200, Oklahoma City 73102 | (405) 272-0386 |