Oil & Gas Companies in Washington County, PA
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | D & B Gas Prod LLC | Kittanning, PA 16201-7123 | Oil & Gas Operator | Dec 2024 |
| 2 | Dakota Oil & Gas Co | Delmont, PA 15626-2408 | Oil & Gas Operator | Dec 2024 |
| 3 | Dallas Energy LLC | Bradford, PA 16701 | Oil & Gas Operator | Dec 2024 |
| 4 | Developed Resources Inc | Cheswick, PA 15024-1351 | Oil & Gas Operator | Dec 2024 |
| 5 | Diversified Oil & Gas LLC | Jackson Center, PA 16133 | Oil & Gas Operator | Jul 2025 |
| 6 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Oct 2025 |
| 7 | Dorso Energy | Wexford, PA 15090 | Oil & Gas Operator | Dec 2004 |
| 8 | Dorso LLC | Wexford, PA 15090-8758 | Oil & Gas Operator | Dec 2005 |
| 9 | Dorso LP | Wexford, PA 15090-8314 | Oil & Gas Operator | Dec 2024 |
| 10 | Dunn Joseph L | Washington, PA 15301-6404 | Oil & Gas Operator | Dec 2024 |
Production numbers shown above are only for Washington County, PA and for the production period listed.