Oil & Gas Companies in Clarion County, PA
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Ecm Exploration Inc | Punxsutawney, PA 15767-6601 | Gas Operator | Dec 2024 |
| 2 | Elder Oil & Gas Co | Parker, PA 16049-6426 | Oil & Gas Operator | Dec 2024 |
| 3 | Empire Exploration Inc | Wichita, KS 67202 | Oil & Gas Operator | Jul 1997 |
| 4 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 5 | Eqt Production Company | Pittsburg, PA 15222 | Oil & Gas Operator | Aug 2025 |
| 6 | Equitable Prod Eastern States Exploration Inc | Snow Shoe, PA 16874-0178 | Gas Operator | Dec 2001 |
| 7 | Equitrans Inc | Cannonsburg, PA 15317 | Oil & Gas Operator | Dec 2018 |
| 8 | Exco Resources (Pa), LLC | Dallas, TX 75251-2224 | Oil & Gas Operator | Aug 2025 |
| 9 | Exco Resources Pa Inc | Warrendale, PA 15086-6501 | Oil & Gas Operator | Dec 2011 |
| 10 | Exley Oil & Gas Corp | Lemont, PA 16851-0425 | Oil & Gas Operator | Dec 2019 |
| 11 | Exotic Oil & Gas LLC | Indiana, PA 15701-3634 | Oil & Gas Operator | Dec 2024 |
Production numbers shown above are only for Clarion County, PA and for the production period listed.