| Business | Phone |
| Amspec Services Llc 1818 Federal Rd A, Houston 77015 | (713) 330-1000 |
| Krebs Petroleum Technologies 8600 Jameel Rd # 180, Houston 77040 | (713) 895-7670 |
| Solo Engineering Inc 15002 Lakeview Dr, Houston 77040 | (713) 896-1340 |
| Exploitation Engineers Inc Po Box 40906, Houston 77240 | (713) 528-1881 |
| Matlock Oil & Gas Inc Po Box 40073, Houston 77240 | (713) 849-2071 |
| Chain Oil & Gas Inc 9219 Katy Fwy, Houston 77024 | (713) 465-4944 |
| Petroacct 8323 Southwest Fwy, Houston 77074 | (713) 772-0664 |
| Commercial Microbiology 1764 W Sam Houston Pkwy N, Houston 77043 | (713) 974-1211 |
| Petroweb Inc 10375 Richmond Ave, Houston 77042 | (713) 953-9052 |
| Technon Usa Inc 10777 Westheimer Rd, Houston 77042 | (713) 260-9609 |
| Woodard Energy Co 2925 Briarpark Dr 1130, Houston 77042 | (713) 975-9755 |
| F & S Development Po Box 691773, Houston 77269 | (281) 807-4700 |
| A 2nd Opinion 4606 Fm 1960 Rd W 400, Houston 77069 | (281) 586-2213 |
| Advantek International 3300 S Gessner Rd 257, Houston 77063 | (713) 532-7627 |
| Agip Petroleum 1201 Louisiana St, Houston 77002 | (713) 890-0731 |
| American Global Resources Inc 2500 West Loop S, Houston 77027 | (713) 266-0753 |
| American Global Resources Inc 7500 San Felipe St # 600, Houston 77063 | (713) 266-0753 |
| Ameripower Llc 5005 Riverway Dr, Houston 77056 | (713) 960-5050 |
| Andalusia Petroleum Svc 11211 Katy Fwy, Houston 77079 | (713) 935-9048 |
| Apa Usa Inc 16701 Greenspoint Park Dr, Houston 77060 | (281) 872-9904 |
| Applied Petroleum Technology 7400 Bellerive Dr 708, Houston 77036 | (713) 334-4997 |
| Argonauta Energy 12012 Wickchester Ln 300, Houston 77079 | (281) 597-9200 |
| B P Taylor & Assoc 11767 Katy Fwy # 530, Houston 77079 | (281) 870-0505 |
| Baird Petrophysical Intl 1784 W Belt Pkwy N, Houston 77043 | (713) 461-1784 |
| Bay Systems 2817 Saint St, Houston 77027 | (713) 963-8070 |
| Bethancourt Oil & Gas Co 811 Dallas St 1420, Houston 77002 | (713) 951-9300 |
| George E Burgher 13410 Alchester Ln, Houston 77079 | (713) 468-7507 |
| C L Brittan & Assoc Inc 1001 Mckinney St 802, Houston 77002 | (713) 650-9713 |
| Cameo Productions Co 11999 Katy Fwy, Houston 77079 | (281) 870-8315 |
| Cape Environmental Mgmt Inc 14410 W Sylvanfield Dr, Houston 77014 | (281) 734-7997 |
| Cawley Gillespie & Assoc Inc 1000 Louisiana St 625, Houston 77002 | (713) 651-9944 |
| Celeghin Consultants Corp 701 N Post Oak Rd 204, Houston 77024 | (713) 681-5464 |
| China National Petroleum Corp 1080 W Sam Houston Pkwy N, Houston 77043 | (713) 465-7382 |
| Commercial Services Co Ltd 2020 Southwest Fwy 222, Houston 77098 | (713) 526-1555 |
| Concept Petroleum Inc 4355 Sylvanfield Dr, Houston 77014 | (281) 537-7005 |
| Concessions International 1302 Waugh Dr, Houston 77019 | (713) 869-2500 |
| Cypress E & P Corp 12777 Jones Rd 335, Houston 77070 | (281) 955-8595 |
| Degolyer & Macnaughton 1800 Bering Dr, Houston 77057 | (713) 273-8300 |
| Dewitt & Co Inc 15333 John F Kennedy Blvd, Houston 77032 | (281) 878-7200 |
| Dowdle & Assoc Inc 15835 Park Ten Pl, Houston 77084 | (281) 398-8900 |
| Earthview Associates Inc 12000 Westheimer Rd 320, Houston 77077 | (281) 556-9766 |
| Edp Management Co 5100 Westheimer Rd, Houston 77056 | (713) 621-6223 |
| Edwards Energy Consultants 224 Westheimer Rd, Houston 77006 | (281) 392-2444 |
| Ely Associates Inc 14343 Torrey Chase Blvd G, Houston 77014 | (281) 580-4646 |
| Estrella Oil & Gas Consltng 1770 Saint James Pl, Houston 77056 | (713) 850-7980 |
| Fairchild & Wells Inc 1011 Highway 6 S, Houston 77077 | (281) 497-8990 |
| Fairchild Ancell & Well 1011 Highway 6 S # 304, Houston 77077 | (281) 870-9731 |
| Fairchild Ancell & Wells 1156 Dairy Ashland Rd, Houston 77032 | (281) 487-8990 |
| Fairweather 650 N Sam Houston Pkwy E 505, Houston 77060 | (281) 445-5711 |
| G & W Systems Corp 12000 Westheimer Rd 111, Houston 77077 | (281) 759-1338 |
| G E Oil Technology Inc 6407 Hillcroft St B, Houston 77081 | (713) 774-0340 |
| Gas Tel Inc 7636 Harwin Dr, Houston 77036 | (713) 780-4434 |
| Merlon Petroleum Co 12707 North Fwy 475, Houston 77060 | (281) 875-0700 |
| Gcssepm Foundation Houston 77090 | (281) 586-0833 |
| Gemini Solutions 11301 Richmond Ave # K110, Houston 77082 | (713) 759-4200 |
| Gnt Intl Inc 9231 Stroud Dr, Houston 77036 | (713) 484-5300 |
| Mc Cauley & Assoc 815 Walker St 1001, Houston 77002 | (713) 658-8905 |
| Golden Engineering Lp 4265 San Felipe St 450, Houston 77027 | (713) 552-1300 |
| Martindale Consultants Inc 16350 Park Ten Pl 234, Houston 77084 | (281) 398-1226 |
| Mark L Shidler Inc 1010 Lamar St 500, Houston 77002 | (713) 222-9291 |
| Madison Energy Advisors Inc 1700 West Loop S 1000, Houston 77027 | (281) 876-2244 |
| Malone Petroleum Consulting 12651 Briar Forest Dr, Houston 77077 | (281) 531-1500 |
| H J Gruy & Assoc Inc 333 Clay St 3850, Houston 77002 | (713) 739-1000 |
| M K Tech Solutions 12843 Covey Ln, Houston 77099 | (281) 564-8851 |
| M P Capsimalis & Assocs Inc 1301 Leeland St 200, Houston 77002 | (713) 658-8595 |
| Harco Minerals Inc 12610 Rocky Hill Dr, Houston 77066 | (281) 440-7926 |
| Loren & Assoc Inc 4600 Highway 6 N 200, Houston 77084 | (281) 861-6503 |
| Earle Hellums 2425 West Loop S, Houston 77027 | (713) 297-8899 |
| Hickory Acquistion Group Inc 8955 Katy Fwy, Houston 77024 | (713) 292-4660 |
| Hite Mcnichol & Assoc Inc 333 Clay St, Houston 77002 | (713) 654-4141 |
| Kuwait Petroleum 2800 Post Oak Blvd 5900, Houston 77056 | (713) 621-4646 |
| Klaveness Research Co 12634 Taylorcrest Rd, Houston 77024 | (713) 468-5123 |
| Htk Consultants Inc 15425 North Fwy # 180, Houston 77090 | (281) 320-8269 |
| Kappa Engineering 9894 Bissonnet St 240, Houston 77036 | (713) 772-5694 |
| Ifp 4801 Woodway Dr, Houston 77056 | (713) 964-2725 |
| Innovative Marketing Svc 16360 Park Ten Pl 206, Houston 77084 | (281) 398-0321 |
| International Completion Consl 3845 Fm 1960 Rd W 335, Houston 77068 | (281) 444-1014 |
| John L Gidley & Assoc 5211 Caversham Dr, Houston 77096 | (713) 665-2056 |
| John S Herold Inc 3 Riverway 700, Houston 77056 | (713) 973-9222 |
| J B Coffman & Assoc Inc 511 Barkers Cv, Houston 77079 | (281) 589-1077 |
| J Connor Consulting 16225 Park Ten Pl 700, Houston 77084 | (281) 578-3388 |
| J Petroleum Llc 11767 Katy Fwy, Houston 77079 | (713) 621-6785 |
| J R Butler & Co 4605 Post Oak Place Dr 107, Houston 77027 | (713) 961-1121 |
| Jack R Blann & Assoc 11303 Valley Stream Dr, Houston 77043 | (281) 556-1648 |
| Jackson Capital Corp 16720 Park Row, Houston 77084 | (281) 398-7558 |
| James L Stroope & Assoc 5644 Westheimer Rd 301, Houston 77056 | (713) 783-9160 |
| Richard C Moore 811 Dallas St 1430, Houston 77002 | (713) 951-0803 |
| Natural Resource Mgmt Inc 11931 Wickchester Ln, Houston 77043 | (281) 496-5230 |
| Netherland Sewell & Assoc Inc 1221 Lamar St 1200, Houston 77010 | (713) 654-4950 |