| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Landmark Oil & G | Oil Operator | Nov 1987 | |
| 2 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 3 | Lario Oil & Gas | Oil & Gas Operator | Nov 1995 | |
| 4 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Apr 2024 |
| 5 | Larson Operating | Oil & Gas Operator | Mar 2001 | |
| 6 | Lauck D R Oil Co | Oil & Gas Operator | Oct 1995 | |
| 7 | Leben Drilling I | Oil & Gas Operator | Dec 1988 | |
| 8 | Liedtke Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2022 |
| 9 | Linn Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2017 |
| 10 | Loeb Herman L | Oil & Gas Operator | Jan 1996 |