| 1 | T & C Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2024 |
| 2 | T-N-T Engineering, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Oct 2025 |
| 3 | Tall City Operations III LLC | Midland, TX 79702 | Oil & Gas Operator | Jun 2023 |
| 4 | Talus Inc | Graham, TX 76450-1210 | Oil & Gas Operator | Feb 2017 |
| 5 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 6 | Tap Rock Operating, LLC | Denver, CO 80203 | Oil & Gas Operator | Oct 2025 |
| 7 | Targa Midstream Services LLC | Houston, TX 77002 | Oil Operator | Mar 2023 |
| 8 | Tarpon Resources, LP | Midland, TX 79704 | Gas Operator | Oct 2025 |
| 9 | Taurus Exploration U.S.A., Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 1998 |
| 10 | Taylor, Ben J. Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Feb 2022 |
| 11 | TC Oil And Gas, LLC | Denton, TX 76205 | Oil Operator | Oct 2025 |
| 12 | Tejas Permian Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 13 | Teke Production LLC | Houston, TX 77269 | Oil Operator | Oct 2025 |
| 14 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Oct 2025 |
| 15 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 16 | Tess Oil Company | Borger, TX 79008 | Oil & Gas Operator | Mar 2008 |
| 17 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | Oct 2025 |
| 18 | Texasgulf Inc. | Newgulf, TX 77462 | Oil & Gas Operator | Jul 1994 |
| 19 | Texland-Rector & Schumacher | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2000 |
| 20 | Thompson, J. Cleo | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 21 | Three Rivers Oper Co III LLC | Austin, TX 78735 | Oil & Gas Operator | Nov 2017 |
| 22 | Three Rivers Operating Co LLC | Austin, TX 78735 | Oil & Gas Operator | Mar 2017 |
| 23 | Three-B Oil Company, The | Monahans, TX 79756 | Oil & Gas Operator | Oct 2025 |
| 24 | Titan Energy, Inc. | Austin, TX 78703 | Oil & Gas Operator | Oct 2025 |
| 25 | Titan Resources I, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2000 |
| 26 | Titus Oil & Gas Production, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2022 |
| 27 | TMBR/Sharp Drilling, Inc. | Midland, TX 79703 | Oil & Gas Operator | Feb 2004 |
| 28 | Topat Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Sep 2017 |
| 29 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 30 | Trigo Oil And Gas, LLC | Amarillo, TX 79101 | Oil & Gas Operator | Mar 2022 |
| 31 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 32 | Triple J Investments Inc | Longview, TX 75606 | Oil & Gas Operator | Feb 2023 |
| 33 | Triumph Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 34 | TRP Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 35 | Two Black Bears Oil, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2003 |
| 36 | Two Oaks Operating Company, LLC. | Flower Mound, TX 75028 | Oil & Gas Operator | Mar 2008 |