| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | L & A Oil Compan | Oil Operator | Sep 1991 | |
| 2 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Sep 2025 |
| 3 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 4 | Lasmo Energy Cor | Oil Operator | Feb 1990 | |
| 5 | Legacy Energy, LLC | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 6 | Leith Operations | Oil Operator | Jul 1989 | |
| 7 | Leroy Holt Oil Operations | Oil Operator | Mar 2010 | |
| 8 | Lloyd Drilling C | Oil Operator | Aug 1995 | |
| 9 | Lloyd Drilling Company | Morland, KS 67650 | Oil Operator | Oct 2009 |
| 10 | LRC Development Corporation | Hays, KS 67601 | Oil Operator | Mar 2009 |