| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Declar Oil & Gas Inc | Oil & Gas Operator | Dec 2012 | |
| 2 | Diamondback Oil Partners LLP | Arvada, CO 80004 | Oil & Gas Operator | Sep 2016 |
| 3 | Diversified Operating Corp. | Golden, CO 80401 | Oil & Gas Operator | Oct 2012 |