| 1 | La Intrastate Gas Co LLC | | Oil Operator | Apr 2004 |
| 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 | Lake Racourci Gath Sys, LLC | | Oil Operator | May 2004 |
| 6 | Lasmo Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 7 | Laurel Operating Company, Inc. | Stillwater, OK 74074-3025 | Oil & Gas Operator | Sep 2024 |
| 8 | Lea Exploration, Inc. | | Oil & Gas Operator | Nov 1989 |
| 9 | Legacy Operating Company | | Oil & Gas Operator | Aug 1992 |
| 10 | LGS Exploration, Inc. | | Oil & Gas Operator | Jan 1991 |
| 11 | Linder Energy/La General Oil | | Oil & Gas Operator | Mar 1989 |
| 12 | Linder Oil Company | | Oil & Gas Operator | Apr 1985 |
| 13 | Linder Oil Company,A Partnership | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2024 |
| 14 | Llog Expl. Co. | Metairie, LA 70005 | Oil & Gas Operator | Jan 2003 |
| 15 | Llog Exploration Company, L.L.C. | | Oil & Gas Operator | Sep 2024 |
| 16 | Louisiana Gas Development Corp | | Oil & Gas Operator | Jul 2024 |
| 17 | Louisiana Intrastate Gas Corp. | | Oil Operator | Feb 1994 |
| 18 | Lynal, Inc. | | Oil & Gas Operator | Oct 1988 |
| 19 | Lyons Petroleum, Inc. | | Oil & Gas Operator | Oct 1988 |