| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Dalton J. Woods | Oil & Gas Operator | Dec 1985 | |
| 2 | David Crow | Oil & Gas Operator | Nov 1985 | |
| 3 | Delta Petroleum Inc | Houston, TX 77269-1007 | Oil & Gas Operator | May 2009 |
| 4 | Domestic Oil Producers,Inc. | Oil Operator | Oct 1998 | |
| 5 | DRD Operating Company | Oil & Gas Operator | Feb 2014 |