| 1 | T.G.B., Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 2 | Tacor Resources Inc | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 3 | Tall Dune Resources, LLC | Boerne, TX 78006 | Oil & Gas Operator | May 2024 |
| 4 | Tamarack Petroleum Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 5 | Targa Midstream Services LLC | Houston, TX 77002 | Oil Operator | Mar 2023 |
| 6 | Targa Pipeline Mid-Continent LLC | Sulphur, LA 70665 | Oil & Gas Operator | Jun 2018 |
| 7 | Taurus Exploration U.S.A., Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 1998 |
| 8 | TC Oil And Gas, LLC | Denton, TX 76205 | Oil Operator | May 2024 |
| 9 | Tejones Operating Corporation | San Antonio, TX 78217 | Oil & Gas Operator | May 2024 |
| 10 | Tempo Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 11 | Terrace Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2013 |
| 12 | Terrapin Energy LLC | Mountain VIew, CA 94043-2356 | Oil Operator | Feb 2024 |
| 13 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | May 2024 |
| 14 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 15 | Texas Crude Operator, Inc. | Houston, TX 77098 | Oil & Gas Operator | Aug 2017 |
| 16 | Texas Crude, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 1995 |
| 17 | Texas Investments | San Angelo, TX 76904 | Oil & Gas Operator | Mar 2008 |
| 18 | Texon Oil Company, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2023 |
| 19 | Thomas Exploration & Devel., Inc | Jourdanton, TX 78026 | Oil & Gas Operator | May 2024 |
| 20 | Thompson, J. Cleo | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
| 21 | Three Rivers Operating Co LLC | Austin, TX 78735 | Oil & Gas Operator | Mar 2017 |
| 22 | Titan Resources I, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2000 |
| 23 | TMBR/Sharp Drilling, Inc. | Midland, TX 79703 | Oil & Gas Operator | Feb 2004 |
| 24 | Tom Operating And Minerals LLC | Andrews, TX 79714 | Gas Operator | May 2024 |
| 25 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 26 | Townsend Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2021 |
| 27 | Trail Mountain, Inc. | Artesia, NM 88210 | Oil & Gas Operator | Jan 2016 |
| 28 | Trail Ridge Energy PRTNS II LLC | Grapevine, TX 76051 | Oil & Gas Operator | Jun 2017 |
| 29 | Trans Oil Marketing LLC | Abilene, TX 79602 | Oil Operator | Aug 2023 |
| 30 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 31 | Trey Resources Inc. | Midland, TX 79710 | Oil & Gas Operator | Jan 2024 |
| 32 | Trigeo Energy, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2024 |
| 33 | Trilogy Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 34 | Trinidad Energy, LLC | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 35 | Trio Production Company, LLC | Stephens, AR 71764 | Oil Operator | Mar 2024 |
| 36 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 37 | TSF Operating | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 38 | Turquoise Bay Corporation | Odessa, TX 79760 | Oil & Gas Operator | Dec 2018 |
| 39 | Txu Gas Company | Dallas, TX 75201 | Oil & Gas Operator | Sep 2004 |
| 40 | Txu Lone Star Pipeline | Dallas, TX 75201 | Oil & Gas Operator | Oct 2003 |