| 1 | K Oil Company | Houston, TX 77005 | Oil & Gas Operator | Apr 2024 |
| 2 | K S Oil Company Inc | Norman, OK 73072-7480 | Oil & Gas Operator | Jan 2024 |
| 3 | K-Von Enterprises Inc | Tecumseh, OK 74873 | Oil & Gas Operator | Jan 1994 |
| 4 | Kahan And Associates, Inc | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2024 |
| 5 | Kahan Louis | Tulsa, OK 74101 | Oil & Gas Operator | May 1994 |
| 6 | Kahn George Operating Co | Seminole, OK 74818 | Oil & Gas Operator | Nov 2000 |
| 7 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Apr 2024 |
| 8 | KC Resources Inc | Snowmass VLG., CO 81615 | Oil & Gas Operator | Dec 2023 |
| 9 | Kelloil Inc | Fort Worth, TX 76116-5600 | Oil & Gas Operator | Mar 2015 |
| 10 | Kelly Cook Oil LLC | | Oil & Gas Operator | Jan 2024 |
| 11 | Kepasa Corp | Oklahoma City, OK 73101-2116 | Oil & Gas Operator | Jan 2024 |
| 12 | Kerr-McGee Refining Corp | Oklahoma City, OK 73125 | Oil & Gas Operator | Jun 2007 |
| 13 | Kim Ray Oil & Gas | Ada, OK 74821-0474 | Oil & Gas Operator | Dec 2023 |
| 14 | Kingery Drilling Co., Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Jan 2024 |
| 15 | Kirkpatrick Oil Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2024 |
| 16 | Kloberdanz, Paul E. | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 17 | Koby Oil Company LLC | Oklahoma City, OK 73101-1945 | Oil & Gas Operator | Jan 2024 |
| 18 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 19 | Krumme Wesley J | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 1997 |
| 20 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 21 | Kybenco Disposals LLC | | Oil Operator | Sep 2022 |