| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | David R Hill Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2024 |
| 2 | Diamond Shamrock Chem Co | Irving, TX 75061 | Oil & Gas Operator | Dec 1990 |
| 3 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Mar 2026 |
| 4 | Dominion East Ohio | North Canton, OH 44720 | Oil & Gas Operator | Dec 2025 |
| 5 | Drillex Inc | Mentor, OH 44060 | Oil & Gas Operator | Dec 2003 |