| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | K & D Oil Compan | Oil Operator | Apr 1994 | |
| 2 | K & E Drilling I | Oil & Gas Operator | Sep 1995 | |
| 3 | K & E Petroleum | Oil & Gas Operator | Jan 1995 | |
| 4 | K & K Oil | Chase, KS 67524 | Oil & Gas Operator | Oct 2019 |
| 5 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Jun 2025 |
| 6 | K R M Petroleum | Oil & Gas Operator | Jan 1990 | |
| 7 | K-Bar Oil LLC | McPherson, KS 67460 | Oil Operator | Jun 2025 |
| 8 | K.C. Operations | Oil Operator | Jun 2025 | |
| 9 | K.J.S. Oil | Oil & Gas Operator | Jun 2025 | |
| 10 | Kahan & Assoc In | Oil Operator | Dec 1996 | |
| 11 | Kahan And Associates, Inc | Tulsa, OK 74170 | Oil & Gas Operator | Jul 2025 |
| 12 | Kaiser-Francis O | Oil & Gas Operator | Oct 1995 | |
| 13 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 14 | Kal Oil Operations | Oil Operator | Jun 2025 | |
| 15 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 16 | Kelso Casing Pul | Oil Operator | Mar 1995 | |
| 17 | Kennedy & Mitche | Oil & Gas Operator | May 1990 | |
| 18 | Kera-Oil | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 19 | KG Oil Co | Oil Operator | Jun 2025 | |
| 20 | Kimbark Oil & Ga | Oil & Gas Operator | Aug 1992 | |
| 21 | Kirkpatrick Properties LLC | Ellinwood, KS 67526 | Oil Operator | Jun 2025 |
| 22 | Kiwanda Resc Inc | Oil & Gas Operator | Aug 1993 | |
| 23 | Kizzar Well Servicing, Inc. | Chase, KS 67524 | Oil Operator | Jun 2025 |
| 24 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 25 | Klima Well Servi | Oil Operator | Dec 1996 | |
| 26 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Jun 2025 |
| 27 | Knighton Oil Com | Oil & Gas Operator | Nov 1996 | |
| 28 | Kodiak Petroleum, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jun 2025 |
| 29 | Koehn Eldon R | Oil Operator | Dec 2009 | |
| 30 | Koron Investments, Inc. | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 31 | Kraft, Jim - Oil Operations | Holyrood, KS 67450 | Oil Operator | Jan 1999 |
| 32 | Kratzer Oil LLC | Oil Operator | Jun 2025 | |
| 33 | Krier Kirby Oil | Oil Operator | Dec 1996 | |
| 34 | Krier Oil Oper - | Oil Operator | Sep 1995 | |
| 35 | Krier Oil Operation | Oil Operator | May 2025 | |
| 36 | Krier, Kirby Oil, Inc. | Claflin, KS 67525 | Oil Operator | Jun 2025 |
| 37 | Kruckenberg & SC | Oil & Gas Operator | Sep 1993 | |
| 38 | Kruckenberg & Scott | Isabel, KS 67065 | Oil Operator | Dec 2011 |
| 39 | Krug, Donald H | Russell, KS 67665 | Oil Operator | Jun 2025 |
| 40 | Kytex, Inc. | Wichita, KS 67230 | Oil Operator | Dec 2019 |