| 1 | Talon Oil & Gas LLC | Dallas, TX 75243 | Oil & Gas Operator | Dec 2010 |
| 2 | Talon Production, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Sep 2026 |
| 3 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 4 | Tanglewood Oil & Gas LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2017 |
| 5 | Targa Midstream Services LLC | Tulsa, OK 74103 | Oil Operator | Mar 2023 |
| 6 | Tarpon Oil & Gas Co. | Fort Worth, TX 76147 | Oil & Gas Operator | Sep 2026 |
| 7 | Tarpon Oil Company | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2016 |
| 8 | Tatanka Operating, LLC | Whitesboro, TX 76273 | Oil & Gas Operator | Sep 2026 |
| 9 | Taylor, Ben J. Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Feb 2022 |
| 10 | Tejas Western Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2018 |
| 11 | Telesis Operating Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Sep 2026 |
| 12 | Tempo Resources GP, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2013 |
| 13 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |
| 14 | Texas Consolidated Pet. Corp. | Fort Worth, TX 76109 | Oil & Gas Operator | Sep 2026 |
| 15 | Texland-Rector & Schumacher | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2000 |
| 16 | Texxol Operating Company, Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Sep 2026 |
| 17 | Three J Operating Company, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2026 |
| 18 | Titan Energy, Inc. | Austin, TX 78703 | Oil & Gas Operator | Sep 2026 |
| 19 | Titan Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2012 |
| 20 | Tower Resources Inc | Conroe, TX 77304 | Oil & Gas Operator | Sep 2026 |
| 21 | Trace Energy Management Inc | Weatherford, TX 76086 | Oil & Gas Operator | Sep 2026 |
| 22 | Tree Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 23 | Tres Azores Oil & Gas, Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Aug 2003 |
| 24 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 25 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2026 |
| 26 | Tristar Exploration, Inc | Pflugerville, TX 78660 | Oil & Gas Operator | Sep 2026 |
| 27 | Trust Oil Co. | Pine, CO 80470 | Oil & Gas Operator | Sep 2026 |
| 28 | Tuckco Petroleum Corporation | Andrews, TX 79714 | Oil & Gas Operator | Feb 2026 |