| 1 | T.G. Energy Co. | Abilene, TX 79602 | Oil & Gas Operator | Mar 2008 |
| 2 | Tam2 Squared Operating, LLC | Rockwall, TX 75032 | Oil & Gas Operator | Dec 2025 |
| 3 | Tanglewood Oil & Gas Co. | Gouldbusk, TX 76845 | Oil & Gas Operator | Dec 2025 |
| 4 | Tankersley, D. C. | Abilene, TX 79601 | Oil & Gas Operator | Sep 2002 |
| 5 | Targo Oil & Gas, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 6 | Tarpon Oil Company | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2016 |
| 7 | Taylor, Frank Well Service | Cross Plains, TX 76443 | Oil & Gas Operator | Aug 2003 |
| 8 | TC Oil And Gas, LLC | Denton, TX 76205 | Oil Operator | Dec 2025 |
| 9 | TCS Petroleum Co., LLC | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 10 | Teague Operating Co. | Mabank, TX 75147 | Oil & Gas Operator | Jul 1995 |
| 11 | Tejas Jack Sales, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Dec 2025 |
| 12 | Tema Oil And Gas Company | Houston, TX 77084 | Oil & Gas Operator | Dec 2025 |
| 13 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 14 | Tempo Resources GP, LLC | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2013 |
| 15 | Texas International Resource LLC | Allen, TX 75013 | Oil Operator | Dec 2025 |
| 16 | Texas Pharchem Inc. | Abilene, TX 79601 | Oil & Gas Operator | Apr 2019 |
| 17 | Texzona Oil & Gas, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 1997 |
| 18 | Thomas, T. N. Oil Company | Aiken, SC 29801 | Oil & Gas Operator | Dec 2025 |
| 19 | Three G Oil Co | Baird, TX 79504 | Oil & Gas Operator | Jun 2004 |
| 20 | Three P Operating Co.,GP, L.L.C. | Newcastle, TX 76372 | Oil & Gas Operator | Dec 2025 |
| 21 | Threeway Drilling Company | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 22 | THT Covenant Holdings, LLC | Wichita Falls, TX 76307 | Oil Operator | Dec 2025 |
| 23 | Tidwell Production Company | Sonora, TX 76950 | Oil & Gas Operator | Dec 2025 |
| 24 | TK Operating | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 25 | TLH Production LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 26 | Townsend Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2021 |
| 27 | TPC Exploration, LLC | May, TX 76857 | Oil & Gas Operator | Dec 2025 |
| 28 | Tracker Mineral | Clyde, TX 79510 | Oil & Gas Operator | Dec 2025 |
| 29 | Trans-Pecos Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Dec 2025 |
| 30 | Transcontinental Shale L.L.C. | Austin, TX 78717 | Oil & Gas Operator | Feb 2016 |
| 31 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Dec 2025 |
| 32 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Jan 2025 |
| 33 | Triple D Oil & Gas Co., Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2025 |
| 34 | Tritex Resources, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2009 |
| 35 | Trump Energy | Austin, TX 78734 | Oil & Gas Operator | Mar 2008 |
| 36 | Trust Oil Co. | Pine, CO 80470 | Oil & Gas Operator | Dec 2025 |
| 37 | Trustar Operating Company Inc. | Austin, TX 78750 | Oil Operator | Dec 2025 |
| 38 | TSW Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Jan 2016 |
| 39 | TT Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 40 | Turner, Greg | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 41 | Txu Lone Star Pipeline | Dallas, TX 75201 | Oil & Gas Operator | Oct 2003 |
| 42 | Tyco Operating Co. | Archer City, TX 76351 | Oil & Gas Operator | Dec 2025 |