| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Davis, LLC* Edward Mike | Oil & Gas Operator | Sep 2015 | |
| 2 | Declar Oil & Gas Inc | Oil & Gas Operator | Dec 2012 | |
| 3 | Diamond Operating, Inc. | Oil & Gas Operator | Feb 2022 | |
| 4 | Diversified Operating Corp. | Golden, CO 80401 | Oil & Gas Operator | Oct 2012 |
| 5 | DJ Production Services Inc | Oil & Gas Operator | Sep 2012 | |
| 6 | DJ Resources Inc | Bowie, TX 76230 | Oil & Gas Operator | Nov 2017 |
| 7 | Donnelly Casing Pulling Co | Oil Operator | Aug 2020 | |
| 8 | Dugan Production Corp | Farmington, NM 87499 | Oil & Gas Operator | Jul 2025 |
| 9 | Dunamis Energy Operating LLC | Oil & Gas Operator | Jul 2025 |