| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | L E Carpenter Oil & Gas, Inc. | Oil & Gas Operator | Sep 1985 | |
| 2 | La Intrastate Gas Co LLC | Oil Operator | Apr 2004 | |
| 3 | La. Land & Expl. Co. | Oil & Gas Operator | Dec 2010 | |
| 4 | Lavino Oil And Gas Company | Oil & Gas Operator | Aug 1989 | |
| 5 | Lea Exploration, Inc. | Oil & Gas Operator | Nov 1989 | |
| 6 | Leggett Petroleum, L.L.C. | Oil & Gas Operator | Dec 2020 | |
| 7 | Liberty Resources, Inc. | Oil & Gas Operator | Dec 2023 | |
| 8 | Louisiana Gas Development Corp | Oil & Gas Operator | Jan 2024 | |
| 9 | Louisiana Intrastate Gas Corp. | Oil Operator | Feb 1994 | |
| 10 | Lynal, Inc. | Oil & Gas Operator | Oct 1988 | |
| 11 | Lyons Petroleum, Inc. | Oil & Gas Operator | Oct 1988 |