| 1 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 2 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 3 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Mar 2025 |
| 4 | Lainco, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Mar 2025 |
| 5 | Laneer Resources Company | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 6 | Lariat Land & Exploration, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 7 | Lavanco Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2006 |
| 8 | Lavanco Energy, LTD. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2024 |
| 9 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Mar 2025 |
| 10 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 11 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Mar 2025 |
| 12 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Aug 2024 |
| 13 | Lodi Drilling & Service Co. | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Mar 2025 |
| 14 | Lodi Operating Company LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Mar 2025 |
| 15 | Lomak Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 1998 |
| 16 | Lone Star Gas Co. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 17 | Lone Star Operations LLC | Lubbock, TX 79401 | Oil & Gas Operator | Mar 2025 |
| 18 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | Mar 2025 |
| 19 | Lovelady, I. W. | Albuquerque, NM 87111 | Oil & Gas Operator | Jan 1996 |
| 20 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 21 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2025 |
| 22 | Lytle Creek Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Mar 2025 |