| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Natl Fuel Gas Supply Corp | Williamsville, NY 14221-5887 | Oil & Gas Operator | Dec 2009 |
| 2 | Natural Oil & Gas Corp | Oil & Gas Operator | Dec 2023 | |
| 3 | North Amer Oil & Gas Drilling Co Inc | Pleasantville, PA 16341-0197 | Oil Operator | Dec 1999 |
| 4 | North Penn Gas Co | Gas Operator | Dec 2000 | |
| 5 | NTS Energy LLC | Indiana, PA 15701-1801 | Oil & Gas Operator | Dec 2015 |
| 6 | Nucomer Energy LLC | Erie, PA 16510 | Oil & Gas Operator | Apr 2026 |