| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | David A Waldron & Assoc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2016 |
| 2 | David R Hill Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2023 |
| 3 | Derby Oil & Gas Corp | Cumberland, OH 43732 | Oil & Gas Operator | Dec 1986 |
| 4 | Devore Anthony D | Gambier, OH 43022 | Oil & Gas Operator | Dec 2010 |
| 5 | Diamond Oil Co | Lancaster, OH 43130 | Oil & Gas Operator | Dec 1992 |
| 6 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Apr 2025 |
| 7 | Dusty Drilling & Producing Corp | New Lexington, OH 43764-1552-1552 | Oil & Gas Operator | Dec 2005 |