| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D. J. Pickrell Operator | Gas Operator | Dec 2012 | |
| 2 | David Radcliff | Oil & Gas Operator | Dec 2014 | |
| 3 | Dekalb Energy Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 1996 |
| 4 | Depco Inc. | Denver, CO 80202 | Oil & Gas Operator | Apr 2014 |
| 5 | Dos Rios Inc. | Gas Operator | Jul 2025 |