| Business | Phone |
| Automated Energy Inc 4100 Perimeter Center Dr # 202, Oklahoma City 73112 | (405) 601-7500 |
| Steven Craig 9400 Broadway Ext # 600, Oklahoma City 73114 | (405) 602-1300 |
| Domestic Resources Corp 8621 N Rockwell Ave # 200, Oklahoma City 73132 | (405) 720-2000 |
| Gary-Williams Energy Corp 1207 Sovereign Row, Oklahoma City 73108 | (405) 945-0024 |
| Gmx Resources Inc 9600 Broadway Ext, Oklahoma City 73114 | (405) 600-0711 |
| Had Resources Inc 1234 Sovereign Row, Oklahoma City 73108 | (405) 917-9057 |
| Herland Sister Resources 2312 W I 44 Service Rd, Oklahoma City 73112 | (405) 521-9696 |
| Lee Energy Exploration Ltd 100 N Broadway Ave, Oklahoma City 73102 | (405) 235-6451 |
| Pioneer Energy 777 Nw Grand Blvd # 175, Oklahoma City 73118 | (405) 416-8000 |
| Zen Energy Co 300 Ne 1st St, Oklahoma City 73104 | (405) 235-2700 |
| Usra Inc Oklahoma City 73116 | (405) 840-0016 |
| Pinnacle Resource Group 2601 Sw 119th St, Oklahoma City 73170 | (405) 735-3037 |
| Smart House Consultants 6444 Nw Expressway St # 836a, Oklahoma City 73132 | (405) 495-9959 |
| Sentinel Resources Llc 6801 Broadway Ext, Oklahoma City 73116 | (405) 843-5650 |