| 1 | L & F Drilling Co., Inc. (1) | Corpus Chrsti, TX 78479 | Oil & Gas Operator | Dec 2025 |
| 2 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Dec 2025 |
| 3 | Lagarto Company, The | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 1995 |
| 4 | Laroca Resources, LTD | Austin, TX 78709 | Oil & Gas Operator | Dec 2025 |
| 5 | Legacy Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Dec 2025 |
| 6 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 7 | Lightning Oil Company | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 8 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 9 | LMP Exploration Operating, LLC | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Feb 2008 |
| 10 | LMP Petroleum, Inc. | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Jan 2010 |
| 11 | Loin Energy Corporation | La Grange, TX 78945 | Oil & Gas Operator | Dec 2025 |
| 12 | Los Hijos De Sanchez J LLC | Beeville, TX 78102 | Oil Operator | Dec 2025 |
| 13 | Louisiana Energy Consultant Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 14 | LT Oil LLC | San Marcos, TX 78666 | Oil Operator | Dec 2025 |
| 15 | Luling Oil & Gas Co Inc | San Antonio, TX 78209 | Oil Operator | Dec 1986 |
| 16 | Lundberg Operating Corporation | Dallas, TX 75225 | Oil & Gas Operator | Oct 2002 |
| 17 | Lytle Creek Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Dec 2025 |