| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H A L Petroleum | Oil Operator | Oct 1987 | |
| 2 | Hackley Okla Inc | Oil & Gas Operator | Aug 1992 | |
| 3 | Hand Oil Co. | Chanute, KS 66720 | Oil Operator | Nov 2000 |
| 4 | Heat Can Oil, LLC | Chanute, KS 66720 | Oil Operator | Jun 2009 |
| 5 | Hennessy Oil Com | Oil Operator | Mar 1991 | |
| 6 | Holtom, Bill, A General Partnership | Saint Paul, KS 66771 | Oil Operator | Dec 2023 |
| 7 | Hutton Charles N | Oil Operator | Dec 1994 |