| 1 | T & G Oil, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Dec 2010 |
| 2 | T & J Oil Production, L.L.C. | Lone Grove, OK 73443 | Oil & Gas Operator | Sep 2024 |
| 3 | T M Hopkins Operating Co | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 4 | T. J. Oil And Gas, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2002 |
| 5 | T.O.I. | Midland, TX 79710 | Oil & Gas Operator | Mar 2001 |
| 6 | Tanos Exploration II, LLC | Tyler, TX 75701 | Oil & Gas Operator | Sep 2023 |
| 7 | Tanos Exploration, LLC | Houston, TX 77010 | Oil & Gas Operator | Oct 2018 |
| 8 | Tascosa Petroleum Corporation | Amarillo, TX 79105 | Oil & Gas Operator | Dec 2024 |
| 9 | Tate, Larry V. Operating, Inc. | Kilgore, TX 75662 | Oil & Gas Operator | Apr 2002 |
| 10 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | Dec 2024 |
| 11 | Texas Energy Operations, LC | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2024 |
| 12 | Texas M.O.R., Inc. | Corsicana, TX 75109 | Oil Operator | Sep 2013 |
| 13 | Texas Royalty Corp. | Austin, TX 78746 | Oil & Gas Operator | Dec 2024 |
| 14 | Texlan Oil Company, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Nov 1994 |
| 15 | Texlan Oil Company, L.C. | Tyler, TX 75711 | Oil & Gas Operator | Aug 2003 |
| 16 | Texstar Petroleum, Inc. | Houston, TX 77002 | Oil & Gas Operator | Nov 2000 |
| 17 | TGNR East Texas II LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 18 | TGNR East Texas LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 19 | TGNR Gulf Coast LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 20 | The Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
| 21 | Three J Energy, Inc. | Seguin, TX 78155 | Oil & Gas Operator | Dec 2024 |
| 22 | Three Sisters Petroleum, Inc. | Oil City, LA 71061 | Oil & Gas Operator | Jul 2024 |
| 23 | Titan Rock E&P, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2024 |
| 24 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Dec 2024 |
| 25 | Toomey Oil Company Inc | Tulsa, OK 74120 | Oil & Gas Operator | Oct 2024 |
| 26 | Torch Energy Services, Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2011 |
| 27 | Trans-Texas Resources, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Feb 1993 |
| 28 | Tri "M" Oil & Gas | Muenster, TX 76252 | Oil & Gas Operator | Dec 2024 |
| 29 | Tri-Am Operating Company | Frankston, TX 75763 | Oil & Gas Operator | Dec 2024 |
| 30 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 31 | Triple J Investments Inc | Longview, TX 75606 | Oil & Gas Operator | Feb 2023 |
| 32 | Triple M Saltwater Disposal, LP | Kilgore, TX 75663 | Oil Operator | Dec 2024 |
| 33 | Trivium Operating, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2024 |
| 34 | Truth Resources LP | Houston, TX 77090 | Oil Operator | Sep 2021 |
| 35 | Txok Texas Energy Resources,L.P. | Dallas, TX 75251 | Oil & Gas Operator | Apr 2008 |
| 36 | TXX Operating LLC | Shreveport, LA 71133 | Oil & Gas Operator | Dec 2024 |
| 37 | Tyler Oil & Gas Inc. | Tyler, TX 75702 | Oil & Gas Operator | Sep 2004 |