| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D90 Energy, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 2 | Dakota Crude, Inc. | Oil & Gas Operator | Oct 2025 | |
| 3 | Dakota Oil Company | Hebbronville, TX 78361 | Oil & Gas Operator | Dec 2025 |
| 4 | Dakota West Pumping, Inc. | Oil & Gas Operator | Feb 2004 | |
| 5 | Denali Oil & Gas Management LLC | Houston, TX 77060 | Oil & Gas Operator | Dec 2012 |
| 6 | Denbury Onshore, LLC | Plano, TX 75024 | Oil & Gas Operator | Dec 2025 |
| 7 | Dome Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |