| 1 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Oct 2025 |
| 2 | Landrum West, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 1997 |
| 3 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 4 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Oct 2025 |
| 5 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 6 | Lesikar, L. W. | Fort Worth, TX 76121 | Oil & Gas Operator | Jun 2006 |
| 7 | Lexgas, Inc. | Roanoke, TX 76262 | Oil & Gas Operator | Oct 2025 |
| 8 | Lexus Gas Corporation | Roanoke, TX 76262 | Oil & Gas Operator | Jul 2005 |
| 9 | Lime Rock Resources IV-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 10 | Lincoln Energy Partners, LLC | Graham, TX 76450 | Oil Operator | Oct 2025 |
| 11 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 12 | LKM Oil & Gas | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2024 |
| 13 | LKM Oil And Gas LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Oct 2025 |
| 14 | London Petroleum Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 15 | Lorac, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Oct 2025 |
| 16 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 17 | Lyndum, Inc. | Weatherford, TX 76088 | Oil & Gas Operator | Oct 2009 |
| 18 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |