Oil & Gas Companies in Harrison County, WV
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Tapo Energy, LLC | West Union, WV 26456 | Oil & Gas Operator | Dec 2021 |
| 2 | Ten A Coal Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2020 |
| 3 | Tenmile Land Limited Liability Company | Bridgeport, WV 26330 | Oil & Gas Operator | Dec 2021 |
| 4 | The Glass Development Company | St. Marys, WV 26170-0000 | Oil & Gas Operator | Dec 2021 |
| 5 | Tri-County Oil & Gas, Inc. | Fairmont, WV 26555-0000 | Oil & Gas Operator | Dec 2019 |
| 6 | Triad Hunter, LLC | Spring, TX 77389 | Oil & Gas Operator | Dec 2021 |
| 7 | Triad Resources Inc | Spring, TX 77389 | Oil & Gas Operator | Dec 2020 |
| 8 | Tribune Resources, LLC | | Oil & Gas Operator | Dec 2021 |
| 9 | Trio Oil And Gas Company | Salem, WV 26426 | Oil & Gas Operator | Nov 2021 |
| 10 | Trio Petroleum Corp. | Glenville, WV 26351-0880 | Oil & Gas Operator | Jul 2016 |
Production numbers shown above are only for Harrison County, WV and for the production period listed.