| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Hall & Horning Serv Inc | Atwater, OH 44201-9375-9375 | Oil & Gas Operator | Dec 2009 |
| 2 | Hall Energy Inc | Magnetic Spring, OH 43036-218-218 | Oil & Gas Operator | Dec 2017 |
| 3 | Headington Oil Company, L.P. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2008 |
| 4 | Hill William F | Millersburg, OH 44654 | Oil & Gas Operator | Dec 1993 |
| 5 | Holbrook LLC | Bimble, KY 40915 | Oil & Gas Operator | Dec 2023 |
| 6 | Hopewell Oil & Gas Development Company | Columbus, OH 43228 | Oil & Gas Operator | Dec 2019 |
| 7 | Hottel Oil & Gas LLC | Wooster, OH 44691-7639-7639 | Oil & Gas Operator | Dec 2013 |