| 1 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2024 |
| 2 | Landmaster Partners, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Dec 2024 |
| 3 | Lane Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2024 |
| 4 | Laneer Resources Company | Abilene, TX 79608 | Oil & Gas Operator | Dec 2024 |
| 5 | Langford Production Company, LLC | Haskell, TX 79521 | Oil & Gas Operator | Dec 2024 |
| 6 | Langford, R. C. Operating Co. | Rule, TX 79547 | Oil & Gas Operator | Mar 1994 |
| 7 | Lariat Land & Exploration, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 2024 |
| 8 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Dec 2024 |
| 9 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 10 | Liberty Operating Company, Inc. | Lake Dallas, TX 75065 | Oil & Gas Operator | Mar 2008 |
| 11 | Lillis, Michael D. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 12 | Lime Creek Enterprises | Aztec, NM 87410 | Oil & Gas Operator | Aug 2008 |
| 13 | Live Oak Gas Company | Dallas, TX 75251 | Oil & Gas Operator | Dec 2024 |
| 14 | LMN Oil And Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Mar 2008 |
| 15 | Lone Star Gas Co. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 16 | Lone Star Operating Company | Pearsall, TX 78061 | Oil & Gas Operator | Dec 2024 |
| 17 | Lone Star Pipeline Company | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 18 | Long Trusts, The | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2024 |
| 19 | Loudon Exploration, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Mar 2008 |
| 20 | Low-End Oil LLC | Austin, TX 78748 | Oil Operator | Dec 2024 |
| 21 | Lynx Oil Co., Inc. | Denton, TX 76207 | Oil & Gas Operator | Sep 2003 |
| 22 | Lytle Creek Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Dec 2024 |