Oil & Gas Companies in Westmoreland 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 | Dannic Energy Corp | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2024 |
| 4 | Delta Petro Corp Of Colorado | Houston, TX 77010-3089 | Gas Operator | Dec 2003 |
| 5 | Developed Resources Inc | Cheswick, PA 15024-1351 | Oil & Gas Operator | Dec 2024 |
| 6 | Discovery Oil & Gas LLC | Canonsburg, PA 15317-9557 | Gas Operator | Dec 2024 |
| 7 | Diversified Oil & Gas LLC | Jackson Center, PA 16133 | Oil & Gas Operator | Jul 2025 |
| 8 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Oct 2025 |
| 9 | DL Resources Inc | Ludlow, PA 16333-0039 | Oil & Gas Operator | Dec 2024 |
| 10 | Dorso Energy | Wexford, PA 15090 | Oil & Gas Operator | Dec 2004 |
| 11 | Dorso LLC | Wexford, PA 15090-8758 | Oil & Gas Operator | Dec 2005 |
| 12 | Dorso LP | Wexford, PA 15090-8314 | Oil & Gas Operator | Dec 2024 |
| 13 | Douglas Oil & Gas LP | State College, PA 16803 | Oil & Gas Operator | Dec 2007 |
Production numbers shown above are only for Westmoreland County, PA and for the production period listed.