| 1 | T & K Oil, Inc | Stephens, AR 71764 | Oil Operator | Aug 2024 |
| 2 | T B K Energy Company | New Braunfels, TX 78130 | Oil & Gas Operator | Mar 2025 |
| 3 | T T & T Inc | Shawnee, OK 74802-3694 | Oil & Gas Operator | Jan 1994 |
| 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 | Tcina Inc | Seminole, OK 74868 | Oil & Gas Operator | May 2023 |
| 7 | TD Operating Inc | Hinton, OK 73047 | Oil & Gas Operator | Mar 2025 |
| 8 | Terra Production Company | Okemah, OK 74859-5924 | Oil & Gas Operator | Apr 2020 |
| 9 | Terry Jack | Konawa, OK 74849-0337 | Oil Operator | Feb 2012 |
| 10 | Tex-Star Production | Dallas, TX 75206 | Oil & Gas Operator | Mar 2025 |
| 11 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 12 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 13 | The Guinn Company LLC | Asher, OK 74826-6012 | Oil & Gas Operator | Oct 2024 |
| 14 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Feb 2025 |
| 15 | Tide West Oil Company | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2021 |
| 16 | Tidewater Operating Co Inc | Tulsa, OK 74136-6308 | Oil & Gas Operator | Feb 2025 |
| 17 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 18 | Titan Oil & Gas Corporation | Edmond, OK 73013-5417 | Oil & Gas Operator | Feb 2025 |
| 19 | Tolson Gary | Seminole, OK 74868-3267 | Oil & Gas Operator | Feb 2025 |
| 20 | Toma Explorations LLC | Shawnee, OK 74801-6925 | Oil & Gas Operator | Jan 2025 |
| 21 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 22 | Totalfinaelf E&P USA Inc | Houston, TX 77024 | Oil & Gas Operator | Jul 2007 |
| 23 | Tracy & Associates Inc | Ada, OK 74820 | Oil & Gas Operator | Apr 2014 |
| 24 | Transok LLC | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jul 2020 |
| 25 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Jun 2025 |
| 26 | Trenchco Inc | Shawnee, OK 74802-3577 | Oil & Gas Operator | Apr 2015 |
| 27 | Trenon Oil & Gas Inc | Oklahoma City, OK 73112-4279 | Oil & Gas Operator | Sep 1996 |
| 28 | Trepel Petroleum Exploration & | | Oil & Gas Operator | Apr 2014 |
| 29 | Triad Energy Corp. Of Texas | Houston, TX 77057-2696 | Oil & Gas Operator | Sep 2014 |
| 30 | Triad Energy, Inc. | Oklahoma City, OK 73105-1401 | Oil & Gas Operator | Mar 2025 |
| 31 | Trineha Inc | Ardmore, OK 73402-2478 | Oil & Gas Operator | Jun 2009 |
| 32 | Triple 7 Energy Company Inc | Prague, OK 74864 | Oil Operator | Feb 1997 |
| 33 | Tripower Resources LLC | Ardmore, OK 73402 | Oil & Gas Operator | Jun 2025 |
| 34 | Tripower Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2020 |
| 35 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Mar 2025 |
| 36 | True Performance Administrators LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2025 |
| 37 | Truevine Operating LLC | Ada, OK 74821-1422 | Oil & Gas Operator | Jan 2025 |
| 38 | Tuscany Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2014 |
| 39 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |