| 1 | W. E. B. Well Tending Service, Inc. | Vienna, WV 26105 | Oil & Gas Operator | Nov 2011 |
| 2 | Waco Oil & Gas Co., Inc. | Glenville, WV 26351-0397 | Oil & Gas Operator | Dec 2021 |
| 3 | Walker Gas Company | Romney, WV 25757-0000 | Oil & Gas Operator | Dec 2018 |
| 4 | Walker Oil And Gas Inc | | Oil & Gas Operator | Jun 2021 |
| 5 | Walker Well Service Inc | Big Bend, WV 26136-0000 | Oil & Gas Operator | Dec 2021 |
| 6 | Warfield Management, LLC | Newman, GA 30263 | Gas Operator | Dec 2021 |
| 7 | Warren Drilling Co | Dexter City, OH 45727 | Oil & Gas Operator | Dec 2024 |
| 8 | Warren Producers Inc | Bowling Green, KY 42102 | Oil & Gas Operator | Dec 2017 |
| 9 | Washington Natural Gas | | Gas Operator | Dec 2006 |
| 10 | Wayne Gas Company | | Gas Operator | Dec 2015 |
| 11 | Welch Oil & Gas Company | Parkersburg, WV 26104 | Oil & Gas Operator | Jun 2013 |
| 12 | West Side Exploration, LLC | | Oil & Gas Operator | Oct 2025 |
| 13 | West VIrginia Land Resources, Inc. | | Oil & Gas Operator | Dec 2021 |
| 14 | Westmoreland Gas, LLC | | Oil & Gas Operator | Dec 2021 |
| 15 | Weva Oil Corp. | | Oil & Gas Operator | Nov 2019 |
| 16 | Weyerhaeuser Company | Crossett, AR 71635 | Oil & Gas Operator | Sep 1994 |
| 17 | White Gas Company | Barboursville, WV 25504-0000 | Gas Operator | Dec 2017 |
| 18 | Whitnam Oil & Gas Corp. | Glenville, WV 26351 | Oil & Gas Operator | Dec 2009 |
| 19 | Williams Well Surveys Inc. | | Oil & Gas Operator | Dec 1996 |
| 20 | Willow Run Corporation | | Oil & Gas Operator | Dec 2021 |
| 21 | Wilson, Brian K | Fairmont, WV 26554-0148 | Oil & Gas Operator | Dec 2018 |
| 22 | Wilson, H C | | Gas Operator | Dec 2003 |
| 23 | Witco Corporation | Newark, OH 43055 | Oil & Gas Operator | Dec 1995 |
| 24 | Wolf Run Mining LLC | | Oil & Gas Operator | Dec 2021 |
| 25 | WV BD. Directors-State College System | Charleston, WV 25301-0000 | Gas Operator | Dec 2017 |
| 26 | WV Wells, LTD | | Oil & Gas Operator | Nov 2021 |