| 1 | Haddad & Brooks Inc | Washington, PA 15301-0776-0776 | Oil & Gas Operator | Dec 2018 |
| 2 | Hall Drilling, LLC | Ellenboro, WV 26346 | Oil & Gas Operator | Dec 2021 |
| 3 | Hardee Petroleum Co., A General PTSHP. | | Oil & Gas Operator | Dec 2013 |
| 4 | Harper Crosby Holdings, LLC | Weston, WV 26452 | Oil & Gas Operator | Dec 2023 |
| 5 | Hartman Oil And Gas Company | | Oil Operator | Dec 1998 |
| 6 | Haught Energy Corporation | Smithville, WV 26178-7004 | Oil & Gas Operator | Dec 2021 |
| 7 | Haught, Glenn L. & Sons | | Oil & Gas Operator | Dec 1997 |
| 8 | Haught, Inc. | Smithville, WV 26178 | Oil & Gas Operator | Nov 2021 |
| 9 | Hayden Harper Energy Ka, LLC | Charlotte, NC 28203-4173 | Oil & Gas Operator | Dec 2021 |
| 10 | HG Energy II Appalachia, LLC | | Oil & Gas Operator | Mar 2022 |
| 11 | HG Energy LLC | Parkersburg, WV 26101 | Oil & Gas Operator | Dec 2021 |
| 12 | Highland Resources, Inc. | | Oil & Gas Operator | Dec 2004 |
| 13 | Hildreth, Roy G & Son Inc | Spencer, WV 25276 | Oil & Gas Operator | Dec 2021 |
| 14 | Hildreth, William H & David Dale | | Oil & Gas Operator | Dec 2021 |
| 15 | Hufco, Incorporated | | Oil & Gas Operator | Dec 2020 |
| 16 | Hughes River Oil & Gas Company | Walker, WV 26180-0000 | Oil & Gas Operator | Dec 2021 |
| 17 | Hydrocarbon Exploration, Inc. | | Oil & Gas Operator | Dec 2008 |
| 18 | Hydrocarbon Management, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 1996 |