- 180 Petroleum Inc
- Amerind Oil Co LTD
- Amron Operating Co
- Anderson Geoconsultants
- Andrew D Bell Exploration
- Antlers Exploration
- Arrington Oil & Gas
- Banner Energy Inc
- Barker Energy Corp
- Baseline Capital LTD
- Bettis Brothers Inc
- Blair Exploration Inc
- Blanks Energy
- Capstone Oil & Gas Co
- Carlow Corp
- Celero Energy
- Centerpoint Resources Inc
- Centurion Energy Corp
- Champion Exploration Corp
- Christensen Petroleum Inc
- Circle M Energy LTD
- Cole Oil & Gas
- Compass Operating
- Continental Land & Fur Co Inc
- Cowboys Resources Corp
- Crescendo Energy Partners
- Custer & Wright
- D B Baxter Inc
- Dakota Resources Inc
- David A Metts Oil & Gas
- David C Cotner & Assoc
- Dean Energy
- Deutsch Exploration Corp
- Dingus Investments
- Donald N Ewan
- Douglas Oil & Gas
- Earnest Producing Corp
- Eastland Exploration Inc
- Edmar Oil & Gas
- Edmund T Anderson IV
- EGL Resources
- Eiland Natural Resources
- Erde Exploration Co
- Erin Oil Co
- Fasken Oil & Ranch Interests
- Featherstone Development Corp
- First Reserve Oil & Gas
- Fiske Energy
- G W Brock Inc
- Gap Exploration LTD
- Gregory H Boles
- Gruy Petroleum Management Co
- Gulf Coast Oil & Gas Co
- Hal J Rasmussen Operating Inc
- Hanley Petroleum Inc
- Hollyhock Corp
- Horsehoe Operating Inc
- J C Barnes Jr
- Jatex Oil & Gas Exploration
- Joe Melton Drilling Co
- John D Kullman Geologist
- Jordan & Pace
- Jordan-Rubicon Resources
- Kerry Petroleum Inc
- L B Culbert
- Lanexco Inc
- Leede Operating Co
- Leede Operating Co
- Lone Star Oil-Gas
- Lowell Dunn Co
- Lynx Operating Co Inc
- Mac Mc Gee Office
- Mack Energy Corp
- Marc D Maddox
- Mc Cab Petroleum Corp
- Mexco Energy Corp
- Midland Oil & Gas Inc
- Mission Royalty LLC
- Murchison Oil & Gas Inc
- Nadel & Gussman Permian LLC
- Newkumet Exploration
- Northern Oil Co
- Oauchita Exploration LLC
- PAR Minerals Inc
- Parsley Resources Inc
- Patriot Resources Inc
- Pecos Slope Partners
- Perm Corp
- Petra Oleum Corp
- Petrolink Energy Advisors
- Phil M Shitsitt
- Pure Resources Inc
- R K Petroleum Corp
- R W Operating Corp
- Rainbow Energy Corp
- Range Resources
- RBP Land Co
- Redfork Petroleum
- Regal Oil & Gas Exploration
- Richard H Coats
- Richard H Coats
- Riviera Energy Corp
- Robert E Landreth
- Robert E Landreth
- Roden Oil Co
- Rpc Operating Inc
- Rubicon Oil & Gas LLC
- Saga Petroleum
- Schoenberger Exploration Co
- Scot D Northern
- SDX Resources Inc
- Sebring Exploration
- Sharp Image Energy Inc
- Sierra Petroleum
- Sigmar Inc
- Sloan Petroleum
- Small Geo-Svc
- Sonshine Exploration
- Spiral Energy Corp
- Staley Operating Co
- Steven W Horn Oil & Gas Proper
- Subsurface Exploration Corp
- Tamarack Petroleum Co
- Tempo Energy Inc
- Texas Eneroil
- Three B Oil Co
- Trend Exploration
- Trinity Bay Oil & Gas
- Triumph Exploration Inc
- Veirs Production Co
- Wendell R Creech
- Wendell R Creech
- West Bay Exploration Co
- Wg Energy Holdings Inc
- Wilson Word B
- WTG Exploration Inc
- Wynco Energy Inc
- X-L Energy Co
- Xeric Oil & Gas Co