| 1 | L & W Oil & Gas, Inc. | | Oil & Gas Operator | May 1994 |
| 2 | La. Land & Expl. Co. | | Oil & Gas Operator | Dec 2010 |
| 3 | La. Mining & Minerals, Inc. | | Oil & Gas Operator | Jul 2000 |
| 4 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 5 | Laurel Operating Company, Inc. | Stillwater, OK 74074-3025 | Oil & Gas Operator | Jan 2024 |
| 6 | Lavaca River Operating Co., LLC | The Woodlands, TX 77381 | Oil & Gas Operator | May 2024 |
| 7 | LGS Exploration Program | | Gas Operator | Jul 1990 |
| 8 | LGS Exploration, Inc. | | Oil & Gas Operator | Jan 1991 |
| 9 | LHC Petroleum Corporation | | Oil & Gas Operator | Jul 2001 |
| 10 | Liberty Oil And Gas Corp. | Olney, IL 62450-2489-2489 | Oil & Gas Operator | Dec 2021 |
| 11 | Linder Energy/La General Oil | | Oil & Gas Operator | Mar 1989 |
| 12 | Linder Oil Company,A Partnership | Shreveport, LA 71136 | Oil & Gas Operator | May 2024 |
| 13 | Llog Expl. Co. | Metairie, LA 70005 | Oil & Gas Operator | Jan 2003 |
| 14 | Llog Exploration Company, L.L.C. | | Oil & Gas Operator | Mar 2024 |
| 15 | Llox, L.L.C. | Covington, LA 70433 | Oil & Gas Operator | May 2024 |
| 16 | Lobo Operating, Inc. | Houston, TX 77077 | Oil & Gas Operator | Nov 2023 |
| 17 | Long Acres Prod. Co., Inc. | | Oil & Gas Operator | Aug 1986 |
| 18 | Louisiana Crude Oil&Gas Co Inc | | Oil & Gas Operator | Mar 1984 |
| 19 | Louisiana Gas Service Co. | | Oil Operator | May 2004 |
| 20 | Lse Energy Operating Co. Inc. | | Oil Operator | Jun 1996 |