Oil & Gas Companies in Mercer County, PA
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | D & L Energy Inc | Canton, OH 44718 | Oil & Gas Operator | Dec 2016 |
| 2 | Deer Creek Oil & Gas | Atlanta, GA 30326-1000 | Gas Operator | Dec 1987 |
| 3 | Diamond Energy Partners LLC | Collinsville, OK 74021 | Oil & Gas Operator | Aug 2025 |
| 4 | Diversified Oil & Gas LLC | Jackson Center, PA 16133 | Oil & Gas Operator | Sep 2025 |
| 5 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Dec 2025 |
| 6 | DJR Well Services Inc | McDonald, OH 44437 | Oil & Gas Operator | Dec 2024 |
| 7 | Dorso Energy | Wexford, PA 15090 | Oil & Gas Operator | Dec 2004 |
| 8 | Douglas Oil & Gas Inc | Canonsburg, PA 15317 | Gas Operator | Dec 2003 |
| 9 | Douglas Oil & Gas LP | State College, PA 16803 | Oil & Gas Operator | Dec 2007 |
| 10 | Dvy Energy LLC | Hadley, PA 16130-2320 | Gas Operator | Dec 2024 |
Production numbers shown above are only for Mercer County, PA and for the production period listed.