| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Dalton & Hanna LTD | Wooster, OH 44691 | Oil & Gas Operator | Dec 2018 |
| 2 | Deep Resources LLC | Holmesville, OH 44633 | Oil & Gas Operator | Dec 2023 |
| 3 | Delta Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 4 | Devore Anthony D | Gambier, OH 43022 | Oil & Gas Operator | Dec 2010 |
| 5 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Dec 2025 |