| Business | Phone |
| Whiting Petroleum Corp Po Box 10368, Enid 73706 | (580) 234-5554 |
| Hiland Partners Lp 205 W Maple Ave # 1100, Enid 73701 | (580) 242-6040 |
| Investors Resources 1508 N Taylor St, Enid 73703 | (580) 233-8708 |
| Tilley Oil & Gas Inc 218 E Elm Ave, Enid 73701 | (580) 233-0087 |
| Tlm Resources Inc 406 Aspen Dr, Enid 73703 | (580) 234-0027 |
| Rogers Resource Inc 2428 Wagon Trl, Enid 73703 | (580) 237-7744 |
| Mc Camey Production Co 1202 Quail Ridge Rd, Enid 73703 | (580) 237-7701 |