| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | D. E. Exploration, Inc. | Wellsville, KS 66092 | Oil & Gas Operator | Jun 2025 |
| 2 | Davis Oil Company | Denver, CO 80202 | Oil & Gas Operator | Jun 1988 |
| 3 | Delphi International, Inc. | Tulsa, OK 74104 | Oil Operator | Jul 2025 |
| 4 | Dotson Floyd | Oil Operator | Dec 1980 |