| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Dart Oil Co | Parker, CO 80134 | Oil & Gas Operator | Dec 2023 |
| 2 | Dawson Resources Inc | Franktown, CO 80116 | Oil & Gas Operator | Mar 2015 |
| 3 | Declar Oil & Gas Inc | Oil & Gas Operator | Dec 2012 | |
| 4 | Diamond Operating, Inc. | Oil & Gas Operator | Feb 2022 | |
| 5 | DJ Production Services Inc | Oil & Gas Operator | Sep 2012 | |
| 6 | Duncan Oil Inc | Denver, CO 80210 | Oil & Gas Operator | Jun 2016 |