| Business | Phone |
| Alpine Resources Inc 1201 Louisiana St # 3310, Houston 77002 | (713) 655-1221 |
| Brammer Engineering 675 Bering Dr # 250, Houston 77057 | (713) 840-1234 |
| Cougar Oil & Gas Co Inc 10623 Tower Oaks Blvd, Houston 77070 | (281) 897-0236 |
| Thom D Farver 1723 Cottage Landing Ln, Houston 77077 | (281) 589-7395 |
| Grasso Production Management 2000 W Sam Houston Pkwy S, Houston 77042 | (281) 597-0244 |
| Graves & Co 1021 Main St 1050, Houston 77002 | (713) 650-0811 |
| Iberia Management Systems Inc 3405 Edloe St 200, Houston 77027 | (713) 629-4490 |