| Business | Phone |
| Continental Land Resources 4151 Southwest Fwy, Houston 77027 | (713) 961-5090 |
| Texas Energy Group 7522 Carew St, Houston 77074 | (713) 977-5774 |
| Landworks Inc 9800 Richmond Ave, Houston 77042 | (713) 334-3044 |
| Alan C Prigge & Assoc Inc 2000 S Dairy Ashford St 110, Houston 77077 | (281) 531-7775 |
| Alvin M Barrett & Assoc 11202 Sandstone St, Houston 77072 | (281) 498-5878 |
| Charlie Hudson & Assoc Inc 14530 Wunderlich Dr 120, Houston 77069 | (281) 580-8536 |
| Chisos Exploration Co 5131 Olympia Fields Ln, Houston 77069 | (281) 580-1599 |
| Cinco Energy Land Svc 9235 Katy Fwy 400, Houston 77024 | (713) 463-6009 |
| Steven M Covey 811 Dallas St 1430, Houston 77002 | (713) 655-8288 |
| Crew Land Research 2630 Fountain View Dr 360, Houston 77057 | (713) 784-5263 |
| Fieldstone 6104 Greenbriar St, Houston 77030 | (713) 349-9667 |
| Frazier Oil Properties 800 Bering Dr 150, Houston 77057 | (713) 789-0008 |
| Meagher Oil & Gas Properties 17314 State Highway 249 # 306, Houston 77064 | (713) 329-9292 |
| Griffith Land Svc Inc 11060 Timberline Rd, Houston 77043 | (713) 465-3273 |
| Hollis Energy & Real Property 2630 Fountain View Dr 216, Houston 77057 | (713) 461-5556 |
| Kilrush Petroleum Inc 815 Walker St 1045, Houston 77002 | (713) 222-1020 |
| Jones & Zweiner Inc 1010 Lamar St 1540, Houston 77002 | (713) 650-0903 |
| Jeff Massey & Assoc Houston 77002 | (713) 951-0290 |