| 1 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Jun 2026 |
| 2 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Jun 2026 |
| 3 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2026 |
| 4 | Lakewood Operating, LTD. | Midland, TX 79702 | Oil & Gas Operator | Jun 2026 |
| 5 | Landmaster Partners, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2026 |
| 6 | Laneer Resources Company | Abilene, TX 79608 | Oil & Gas Operator | Jun 2026 |
| 7 | Largo Oil Company | Longview, TX 75606 | Oil & Gas Operator | Jun 2026 |
| 8 | Lawrence Energy Company | Abilene, TX 79602 | Oil & Gas Operator | Jun 2026 |
| 9 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Jun 2026 |
| 10 | Leclair Operating, L.L.C. | Abilene, TX 79602 | Oil & Gas Operator | Jun 2026 |
| 11 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 12 | Leroy Oil Co. | Gainesville, TX 76240 | Oil & Gas Operator | Jun 2002 |
| 13 | Lime Creek Enterprises | Aztec, NM 87410 | Oil & Gas Operator | Aug 2008 |
| 14 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Jun 2025 |
| 15 | Littlepage, Tommy | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 16 | Live Oak Op & Production, L.L.C. | Austin, TX 78759 | Oil & Gas Operator | Nov 2011 |
| 17 | Lone Star Gas Co. | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 18 | Lone Star Pipeline Company | Dallas, TX 75201 | Oil & Gas Operator | Jul 1999 |
| 19 | Lorac, Inc. | Dallas, TX 75252 | Oil & Gas Operator | Jun 2026 |
| 20 | Low-End Oil LLC | Austin, TX 78748 | Oil Operator | Jun 2026 |
| 21 | Luvwell Holdings | Tyler, TX 75701 | Oil Operator | Jun 2026 |
| 22 | Lynx Oil Co., Inc. | Denton, TX 76207 | Oil & Gas Operator | Sep 2003 |
| 23 | Lytle Creek Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Jun 2026 |