| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 101 | Frontier Land Company, Inc. | Leawood, KS 66206 | Oil Operator | Sep 2008 |
| 102 | Frontier Oil Com | Oil & Gas Operator | May 1995 | |
| 103 | Frontier Oil Company | Oil Operator | Oct 1999 | |
| 104 | Fuller Oil | Iola, KS 66749 | Oil Operator | Jun 2001 |
| 105 | Funk Oil & Operating, LLC | Russell, KS 67665 | Oil Operator | Jul 2024 |
| 106 | Further Developm | Oil Operator | Apr 1986 | |
| 107 | Future Energy Li | Oil Operator | Nov 1991 | |
| 108 | Fyler Oil, LLC | McPherson, KS 67460 | Oil Operator | Jul 2024 |
| 109 | Fyler, M. A. | Rangley, CO 81648 | Oil Operator | Mar 1988 |