| 6101 | Triple Diamond Energy Operating LLC | Dallas, TX 75254-8352 | Oil & Gas Operator | Jun 2014 |
| 6102 | Triple G Well Service, Inc. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 6103 | Triple H Operating | Tryon, OK 74875-6235 | Oil Operator | Apr 2022 |
| 6104 | Triple L Management Co Inc | Edmond, OK 73025-2908 | Oil & Gas Operator | Apr 2018 |
| 6105 | Triple S Drilling Company | Leonard, OK 74043 | Oil & Gas Operator | Feb 2012 |
| 6106 | Triple W Oil Inc | Chandler, OK 74834-0546 | Oil & Gas Operator | May 2013 |
| 6107 | Tripledee Drilling Co Inc | Ardmore, OK 73402-1888 | Oil & Gas Operator | Dec 2015 |
| 6108 | Tripledee Operating Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Nov 2022 |
| 6109 | Triplett Larry W | Oklahoma City, OK 73112-5325 | Oil & Gas Operator | Mar 2015 |
| 6110 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2025 |
| 6111 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 6112 | Trissell Alva Lee | Willow, OK 73673-9602 | Oil Operator | Apr 2020 |
| 6113 | Tritex Production Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jan 2013 |
| 6114 | Triton Oil & Gas Corp. | Houston, TX 77002 | Oil & Gas Operator | Nov 2014 |
| 6115 | Triumph Energy Inc | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2015 |
| 6116 | Triumph Energy Partners LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Aug 2025 |
| 6117 | Triumph Resources Inc | Oklahoma City, OK 73114 | Oil & Gas Operator | Nov 2004 |
| 6118 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Sep 2025 |
| 6119 | Trojan Resources LLC | Sapulpa, OK 74066-8095 | Oil Operator | Aug 2025 |
| 6120 | Trout Disposal Well Inc | Hammon, OK 73650 | Oil & Gas Operator | Jan 2025 |
| 6121 | Troy Energy Operating LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Aug 2025 |
| 6122 | Troyer Howard E | Tulsa, OK 74133-8016 | Oil & Gas Operator | Dec 2014 |
| 6123 | TRP Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 6124 | TRP-Ok Properties LLC | Norman, OK 73072 | Oil & Gas Operator | Sep 2025 |
| 6125 | Tru Operating LLC | Denton, TX 76201 | Oil & Gas Operator | Apr 2023 |
| 6126 | Truckers Disposal Inc | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2025 |
| 6127 | True Performance Administrators LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 6128 | Trueblood Resources, Inc. | Denver, CO 80222 | Oil & Gas Operator | Dec 2025 |
| 6129 | Truevine Gas Company | Ada, OK 74821-1422 | Oil & Gas Operator | Aug 2025 |
| 6130 | Truevine Operating LLC | Ada, OK 74821-1422 | Oil & Gas Operator | Aug 2025 |
| 6131 | Truluck Enterprises LLC | Wichita Falls, TX 76308-4454 | Oil & Gas Operator | Apr 2015 |
| 6132 | Tsalta Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 1998 |
| 6133 | Tucker Gary & Deedee | Jennings, OK 74038 | Oil & Gas Operator | Jun 2025 |
| 6134 | Tucker Ron & Co | Norman, OK 73069-8511 | Gas Operator | Sep 2017 |
| 6135 | Tucker, Timothy R | | Oil Operator | Aug 2025 |
| 6136 | Tucson Oil & Gas Inc | | Oil & Gas Operator | Aug 1994 |
| 6137 | Tulsa Energy Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2013 |
| 6138 | Tulsa Energy Partners LLC | Tulsa, OK 74103-4461 | Oil & Gas Operator | Sep 2025 |
| 6139 | Tulsa Minerals Inc | Tulsa, OK 74136-1045 | Oil & Gas Operator | May 2013 |
| 6140 | Tulum Corporation | Oklahoma City, OK 73101-0125 | Oil & Gas Operator | Feb 2025 |
| 6141 | Turnbow John R Company | Tulsa, OK 74120-2420 | Oil & Gas Operator | Aug 2006 |
| 6142 | Turner John O | Drumright, OK 74030-1216 | Oil & Gas Operator | Feb 1998 |
| 6143 | Turner Oil Company | Yale, OK 74085-0234 | Oil & Gas Operator | Nov 2014 |
| 6144 | Turner Randall L | Duncan, OK 73533-4826 | Oil Operator | Jun 2025 |
| 6145 | Turner Resources Inc | Hennessey, OK 73742 | Oil & Gas Operator | Aug 2025 |
| 6146 | Turntable Energy Inc | Ponca City, OK 74604 | Oil & Gas Operator | Jul 2025 |
| 6147 | Turpin Ledon Production | Ada, OK 74820-0549 | Oil Operator | Aug 2025 |
| 6148 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 6149 | Tuthill S Keith & Bill Barbee | Amarillo, TX 79101-1427 | Oil & Gas Operator | Dec 2004 |
| 6150 | Twain Energy LLC | Ridgeland, MS 39157 | Gas Operator | Sep 2025 |
| 6151 | Twenty First Century Res Inc | Lajolla, CA 92037-7044 | Oil & Gas Operator | Mar 2015 |
| 6152 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2025 |
| 6153 | Twilight Energy LLC | Fort Worth, TX 76185 | Oil & Gas Operator | Dec 2025 |
| 6154 | Twin Eagle Petroleum Corp | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2002 |
| 6155 | Twisted Oak Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 6156 | Twisted Resources Inc | Blanchard, OK 73010-8463 | Oil & Gas Operator | Aug 2025 |
| 6157 | Two Forks Operating LLC | Ponca City, OK 74601-7815 | Oil & Gas Operator | Aug 2025 |
| 6158 | Two Gems Company | McAlester, OK 74502-1996 | Oil & Gas Operator | Aug 2025 |
| 6159 | Two Pines | Drumright, OK 74030-5502 | Oil & Gas Operator | Feb 2012 |
| 6160 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
| 6161 | Txok Energy Resources Company | Tulsa, OK 74172-0140 | Oil & Gas Operator | Feb 2017 |
| 6162 | Tyler Enterprises Inc | Bristow, OK 74010-3192 | Oil & Gas Operator | Feb 2004 |
| 6163 | Tyler, Scott A | | Oil & Gas Operator | Aug 2025 |
| 6164 | Tyler, Steven Lee | | Oil Operator | May 2014 |
| 6165 | Tyson Gary | Hobart, OK 73651-6413 | Oil & Gas Operator | Mar 2018 |
| 6166 | Tyson Olan | Hobart, OK 73651-6413 | Oil & Gas Operator | Apr 2015 |
| 6167 | Tytan Operating Company LLC | Edmond, OK 73083-3794 | Oil & Gas Operator | May 2016 |
| 6168 | U S Drilling Company Inc | Holdenville, OK 74848-0913 | Oil & Gas Operator | Mar 2017 |
| 6169 | U. S. Energy Development Corporation | Fort Worth, TX 76164 | Oil & Gas Operator | Dec 2025 |
| 6170 | U.S. Oil Reclaimers, LLC | | Oil Operator | Jun 2023 |
| 6171 | Ultramar Oil & Gas LTD | Houston, TX 77060 | Oil & Gas Operator | Jul 1995 |
| 6172 | Umberham Oil Company Inc | Oklahoma City, OK 73151-4000 | Oil & Gas Operator | Sep 2025 |
| 6173 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 6174 | Unbridled Resources, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 6175 | Underwood Oil And Gas LLC | Chandler, OK 74834-1414 | Oil & Gas Operator | Sep 2025 |
| 6176 | Unicon Producing Company | Houston, TX 75252 | Gas Operator | Mar 1994 |
| 6177 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 6178 | Union Texas Petroleum Corp | Houston, TX 77252-2120 | Oil & Gas Operator | Dec 2014 |
| 6179 | Union Valley Petroleum Corp | Enid, OK 73701 | Oil & Gas Operator | Sep 2025 |
| 6180 | Unit Drilling & Exploration Co | Tulsa, OK 74132-5300 | Oil & Gas Operator | Apr 2025 |
| 6181 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 6182 | United Energy & Expl Inc | Ada, OK 74821-2449 | Oil & Gas Operator | Aug 2025 |
| 6183 | United Energy & Exploration LLC | Ada, OK 74821 | Oil & Gas Operator | Sep 2025 |
| 6184 | United Energy Develop Co LTD | Bartlesville, OK 74003 | Oil Operator | Mar 2004 |
| 6185 | United Energy Operating, LLC | Edmond, OK 73083 | Oil & Gas Operator | Dec 2025 |
| 6186 | United Oil Corporation | Denver, CO 80202-3813 | Oil & Gas Operator | Aug 2025 |
| 6187 | United Primary Resources Inc | Milton, WA 98354-9361 | Oil & Gas Operator | Feb 2016 |
| 6188 | United Producers Inc | Broken Arrow, OK 74012-8247 | Oil & Gas Operator | Mar 2020 |
| 6189 | United Production Company LLC | Edmond, OK 73003 | Oil & Gas Operator | Sep 2025 |
| 6190 | United States Gypsum Company | Oakfield, NY 14125 | Oil & Gas Operator | Dec 2024 |
| 6191 | United Texas Petroleum Inc. | McKinney, TX 75070 | Oil & Gas Operator | Dec 2025 |
| 6192 | Universal Drilling Company | Denver, CO 80203 | Oil & Gas Operator | Sep 2003 |
| 6193 | Universal Exploration Inc | Wadsworth, OH 44281-9460 | Oil & Gas Operator | Feb 2012 |
| 6194 | Universal Fuels Company | | Oil & Gas Operator | Oct 1993 |
| 6195 | Upland Operating, LLC | Dallas, TX 75226 | Oil & Gas Operator | Dec 2025 |
| 6196 | Upland Production Company | Edmond, OK 73083 | Oil & Gas Operator | Dec 2025 |
| 6197 | Upland Resources, Inc. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2009 |
| 6198 | Uplands Resources Inc | Tulsa, OK 74103-4141 | Oil & Gas Operator | Aug 2025 |
| 6199 | Uptex Operating, L.P. | Dallas, TX 75201 | Oil & Gas Operator | May 2010 |
| 6200 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Dec 2025 |