| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | L And G Drilling | Oil Operator | Jun 1987 | |
| 2 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 3 | Lakes And Country Realty LLC | Oil Operator | Mar 2015 | |
| 4 | Lakewood Petroleum | Oil & Gas Operator | Sep 1993 | |
| 5 | Lambda Energy Resources LLC | Oil & Gas Operator | Mar 2024 | |
| 6 | Lawrence Exploration Inc | Oil & Gas Operator | Sep 2004 | |
| 7 | Layline Oil And Gas LLC | Houston, TX 77024 | Oil & Gas Operator | Jan 2024 |
| 8 | Lease Management Inc | Oil & Gas Operator | Dec 2023 | |
| 9 | Lease Management Inc And McClure Oil Co | Oil & Gas Operator | Apr 1991 | |
| 10 | Lees Petroleum LLC | Oil & Gas Operator | Jul 2000 | |
| 11 | Lignum Oil Company | Oil & Gas Operator | Dec 1989 | |
| 12 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Feb 2024 |
| 13 | Lithos Exploration Inc | Oil & Gas Operator | Nov 2014 | |
| 14 | Loe Petroleum & Environmental Engineering LLC | Oil Operator | Feb 2024 | |
| 15 | Long Jack Senior | Oil Operator | Jan 2004 | |
| 16 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 17 | Lucas George C | Oil Operator | Jul 2014 | |
| 18 | Luchshyn Harry E And Dannemiller William F | Oil & Gas Operator | Dec 1994 | |
| 19 | Lyco Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jun 2015 |