| 1 | T & D Oil | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2025 |
| 2 | T.G.B., Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 3 | Tap Rock Operating, LLC | Denver, CO 80203 | Oil & Gas Operator | Nov 2025 |
| 4 | Targa Midstream Services LLC | Houston, TX 77002 | Oil Operator | Mar 2023 |
| 5 | Taurus Exploration U.S.A., Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 1998 |
| 6 | Taylor, Ben J. Inc. | Fort Worth, TX 76185 | Oil & Gas Operator | Feb 2022 |
| 7 | Taylor, J. S. Inc. | Lewisville, TX 75057 | Oil & Gas Operator | Nov 2025 |
| 8 | Taylor-Link Operating Co. | Midland, TX 79702 | Oil & Gas Operator | Apr 2017 |
| 9 | TD Natural Resources LLC | Cuero, TX 77954 | Oil & Gas Operator | Nov 2025 |
| 10 | Teke Production LLC | Houston, TX 77269 | Oil Operator | Nov 2025 |
| 11 | Terrace Petroleum Corporation | Midland, TX 79701 | Oil & Gas Operator | Jul 2013 |
| 12 | Texaco E & P Inc. | Houston, TX 77099 | Oil & Gas Operator | Nov 2025 |
| 13 | Texas Consolidated Pet. Corp. | Fort Worth, TX 76109 | Oil & Gas Operator | Nov 2025 |
| 14 | Texland Petroleum Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2003 |
| 15 | Texland Petroleum, L.P. | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2025 |
| 16 | Texland-Rector & Schumacher | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2000 |
| 17 | Texon Oil Company, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2023 |
| 18 | Three Rivers Operating Co LLC | Austin, TX 78735 | Oil & Gas Operator | Mar 2017 |
| 19 | Three-B Oil Company, The | Monahans, TX 79756 | Oil & Gas Operator | Nov 2025 |
| 20 | Thunderbird Drilling, Inc. | Wichita, KS 67207 | Oil Operator | Oct 2008 |
| 21 | Tiburon Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2000 |
| 22 | Tidwell Production Company | Sonora, TX 76950 | Oil & Gas Operator | Nov 2025 |
| 23 | Titan Resources I, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2000 |
| 24 | Titus Oil & Gas Production, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2022 |
| 25 | Torch Energy Services, Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2011 |
| 26 | TPC Exploration, LLC | May, TX 76857 | Oil & Gas Operator | Nov 2025 |
| 27 | Trans-Tex Operating LLC | Dallas, TX 75367 | Oil & Gas Operator | Nov 2025 |
| 28 | Treadaway Oil Co. | Balmorhea, TX 79718 | Oil & Gas Operator | Nov 2025 |
| 29 | Triple "N" Services, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 30 | TRP Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Nov 2025 |
| 31 | Two Black Bears Oil, Inc. | Midland, TX 79710 | Oil & Gas Operator | Sep 2003 |
| 32 | Two P Partners, LLC | Houston, TX 77056 | Oil & Gas Operator | Nov 2025 |
| 33 | TX Heat Of The Permian Basin Inc | Odessa, TX 79768 | Oil & Gas Operator | Dec 2021 |