| 1 | T B K Energy Company | New Braunfels, TX 78130 | Oil & Gas Operator | Dec 2024 |
| 2 | Tahoe Exploration Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2016 |
| 3 | Tallgrass Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2025 |
| 4 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jan 2025 |
| 5 | TC Energy LLC | Covington, OK 73730-2116 | Oil & Gas Operator | Sep 2014 |
| 6 | Te-Ray Energy, Inc. | Oklahoma City, OK 73108 | Oil & Gas Operator | Dec 2024 |
| 7 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2025 |
| 8 | Tessera Energy LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Dec 2024 |
| 9 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Jan 2025 |
| 10 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 11 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 12 | Texasgulf Inc. | Newgulf, TX 77462 | Oil & Gas Operator | Jul 1994 |
| 13 | Thomas J L Engineering Inc | Edmond, OK 73003-0026 | Oil & Gas Operator | Jul 2016 |
| 14 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2024 |
| 15 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 16 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Mar 2025 |
| 17 | Tilley Oil Inc | Velma, OK 73491 | Oil & Gas Operator | Jan 2025 |
| 18 | Token Operating, LLC | Enid, OK 73703-1094 | Oil Operator | Jan 2025 |
| 19 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2025 |
| 20 | Toklan Oil Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 21 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 22 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 23 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 24 | Trepco Production Company, Inc. | Yukon, OK 73099 | Oil & Gas Operator | Jan 2025 |
| 25 | Tri-Unity Inc | Sand Springs, OK 74063-4401 | Oil & Gas Operator | Jun 2009 |
| 26 | Triad Energy, Inc. | Oklahoma City, OK 73105-1401 | Oil & Gas Operator | Jan 2025 |
| 27 | Triplett Larry W | Oklahoma City, OK 73112-5325 | Oil & Gas Operator | Mar 2015 |
| 28 | Triumph Energy, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Nov 2015 |
| 29 | Tulsa Energy Partners LLC | Tulsa, OK 74103-4461 | Oil & Gas Operator | Jan 2025 |
| 30 | Turner Resources Inc | Hennessey, OK 73742 | Oil & Gas Operator | Dec 2024 |
| 31 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2025 |
| 32 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |