| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D.M. Well Service | Oil Operator | Dec 2019 | |
| 2 | Dakota Production Co., Inc. | Neodesha, KS 66757 | Gas Operator | Mar 2025 |
| 3 | Dart Cherokee Basin Operating Co., LLC | Mason, MI 48854 | Oil & Gas Operator | Mar 2025 |
| 4 | Davis Drilling & | Oil Operator | Jul 1989 | |
| 5 | Davis Oil Compan | Oil Operator | Jul 1988 | |
| 6 | Davis, Michael G. | Wichita, KS 67212 | Oil & Gas Operator | Jul 1988 |
| 7 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Jul 2025 |
| 8 | Denova | Oil Operator | Jan 1989 | |
| 9 | Dorado Gas Resources LLC | Centennial, CO 80112 | Oil & Gas Operator | Jul 2009 |
| 10 | Double Eagle Exploration Inc | Windthorst, TX 76389 | Oil Operator | Mar 2025 |