| 1 | T And L Oil Inc | Tonkawa, OK 74653-4530 | Oil & Gas Operator | Jul 2025 |
| 2 | T B K Energy Company | Brenham, TX 77833 | Oil & Gas Operator | Jul 2025 |
| 3 | T C Craighead & Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Aug 2019 |
| 4 | Tack Operating LLC | Oklahoma City, OK 73172-1492 | Oil & Gas Operator | Aug 2021 |
| 5 | Tag Petroleum Inc | Stillwater, OK 74076 | Oil & Gas Operator | Jan 2021 |
| 6 | Tapoil Inc | Elmore City, OK 73433-9077 | Oil & Gas Operator | Jul 2021 |
| 7 | Tapstone Energy LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jul 2025 |
| 8 | Tat, Inc. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2023 |
| 9 | Taylor R C Companies Inc | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | May 2021 |
| 10 | Taylor R Clark Exploration Inc | | Oil & Gas Operator | Aug 1992 |
| 11 | Te-Ray Resources, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 12 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Jul 2025 |
| 13 | Territory Resources LLC | Stillwater, OK 74074-1869 | Oil & Gas Operator | Aug 2025 |
| 14 | Texaco Expl. And Prod. Inc. | Houston, TX 77236 | Oil & Gas Operator | Jun 2025 |
| 15 | Texas Meridian Operating Co. Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 1993 |
| 16 | Thomas J L Engineering Inc | Edmond, OK 73003-0026 | Oil & Gas Operator | Jul 2016 |
| 17 | Three Sands Oil Inc | Perry, OK 73077 | Oil & Gas Operator | May 2023 |
| 18 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jun 2025 |
| 19 | Tilley Oil & Gas, Inc. | Oklahoma City, OK 73172 | Oil & Gas Operator | Oct 2025 |
| 20 | Toklan Oil And Gas Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 21 | Toland & Johnston Inc | Edmond, OK 73034 | Oil & Gas Operator | Jun 2025 |
| 22 | Toomey Oil Company Inc | Tulsa, OK 74120 | Oil & Gas Operator | Jul 2025 |
| 23 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 24 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
| 25 | Trepco Production Company, Inc. | Yukon, OK 73099 | Oil & Gas Operator | Jun 2025 |
| 26 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 27 | Triad Energy, Inc. | Oklahoma City, OK 73105-1401 | Oil & Gas Operator | Jul 2025 |
| 28 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Oct 2025 |
| 29 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 30 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Jul 2025 |
| 31 | Truevine Operating LLC | Ada, OK 74821-1422 | Oil & Gas Operator | Jul 2025 |
| 32 | Tulum Corporation | Oklahoma City, OK 73101-0125 | Oil & Gas Operator | Feb 2025 |
| 33 | Turpin Ledon Production | Ada, OK 74820-0549 | Oil Operator | May 2025 |
| 34 | Twenty First Century Res Inc | Lajolla, CA 92037-7044 | Oil & Gas Operator | Mar 2015 |
| 35 | Twenty/Twenty Oil & Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jul 2025 |
| 36 | Two Forks Operating LLC | Ponca City, OK 74601-7815 | Oil & Gas Operator | Jun 2025 |