| 1 | T & K Oil Inc | Stephens, AR 71764 | Oil Operator | Jul 2024 |
| 2 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Nov 2024 |
| 3 | Tensas Delta Exploration Company, LLC | Shreveport, LA 71101-5323 | Oil & Gas Operator | Jul 2021 |
| 4 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
| 5 | Tetra Energy LLC | Fort Smith, AR 72917-0476 | Gas Operator | Oct 2019 |
| 6 | Texland Petroleum Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2007 |
| 7 | The Blackbird Company | Shreveport, LA 71106 | Oil & Gas Operator | Jul 2024 |
| 8 | The Bonds Company | | Oil Operator | Dec 2014 |
| 9 | The Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 10 | The Ohio Oil Company | | Oil Operator | Jul 2024 |
| 11 | Thomas, Mark C Operating | | Oil Operator | Aug 2009 |
| 12 | Titan Energy, LLC | Smackover, AR 71762 | Oil & Gas Operator | Sep 2024 |
| 13 | TK Drilling Corp. | Tulsa, OK 74133 | Oil & Gas Operator | Aug 2024 |
| 14 | TMR Exploration, Inc. | Bossier City, LA 71171 | Oil & Gas Operator | Nov 2024 |
| 15 | Traylor Equipment, LLC | Smackover, AR 71762 | Oil Operator | Aug 2007 |
| 16 | Trimble, Don G Dba Trimble Production Company | Houston, TX 77066 | Oil Operator | Jul 2024 |
| 17 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jul 2024 |
| 18 | Triple C Production LLC | Bloomburg, TX 75556 | Oil & Gas Operator | Apr 2024 |
| 19 | Turner, Jack L | El Dorado, AR 71730 | Oil Operator | Nov 2023 |