| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | PDC Mountaineer LLC | Wexford, PA 15090-3400 | Oil & Gas Operator | Dec 2017 |
| 2 | Pennfield Energy LLC | Erie, PA 16510-4760 | Oil & Gas Operator | Dec 2021 |
| 3 | Pennzoil Prod Co | Oil & Gas Operator | Dec 2000 | |
| 4 | Petro Dev Corp | Bridgeport, WV 26330-0026 | Oil & Gas Operator | Dec 2013 |
| 5 | Pin Oak Energy Partners LLC | Akron, OH 44311 | Oil & Gas Operator | Jun 2026 |
| 6 | PNB Petrol Haddad & Brooks Inc | Atlanta, GA 30305-1555 | Oil & Gas Operator | Dec 1989 |