| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Wagner & Wagner | Indiana, PA 15701-1273 | Gas Operator | Dec 2012 |
| 2 | WBM Enterprises | Creekside, PA 15732-8228 | Oil & Gas Operator | Dec 2025 |
| 3 | WGM Gas Co Inc | Oil & Gas Operator | Dec 2025 | |
| 4 | WHC Oper LLC | Gas Operator | Dec 2025 | |
| 5 | White Oak Farms Inc | Gas Operator | Dec 2025 | |
| 6 | William McIntire Coal Oil & Gas | Oil & Gas Operator | May 2022 | |
| 7 | Wilmoth Clark Exploration & Prod LLC | Gas Operator | Dec 2008 | |
| 8 | Wilmoth Interests, Inc. | Marion Center, PA 15759 | Oil & Gas Operator | May 2026 |
| 9 | Wind River Exploration Inc | Sewickley, PA 15143 | Oil & Gas Operator | Apr 2026 |
| 10 | Wood Drilling LLC | Gas Operator | Dec 2025 | |
| 11 | Wood William C | Oil & Gas Operator | Dec 2018 |