| 1 | K & E Drilling, Inc | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 2 | K & E Oil & Gas Co. | Bayfield, CO 81122 | Oil & Gas Operator | Oct 2008 |
| 3 | K & E Petroleum, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Apr 2012 |
| 4 | K.W.A., Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 5 | K3 Productions LLC | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 6 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Oct 2025 |
| 7 | Kana Resources, Inc. | Dallas, TX 75243 | Oil & Gas Operator | Aug 2003 |
| 8 | Katsco Energy, Inc. | Round Rock, TX 78664 | Oil & Gas Operator | Oct 2025 |
| 9 | Kem Energy, Inc. | Katy, TX 77450 | Oil & Gas Operator | Oct 2025 |
| 10 | Kennedy, R. R. Production, Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Oct 2025 |
| 11 | Kerogen Texas Energy Op LLC | Houston, TX 77060 | Oil & Gas Operator | Feb 2018 |
| 12 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | May 2025 |
| 13 | Kerr-McGee Oil & Gas Onshore LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2017 |
| 14 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 15 | Keystone Petroleum NM LLC | Irving, TX 75039 | Oil & Gas Operator | Jan 2016 |
| 16 | Killer Rabbit Fields LLC | Monahans, TX 79756 | Oil & Gas Operator | Oct 2025 |
| 17 | Kimball Production Co. | Houston, TX 77042 | Oil & Gas Operator | Jul 2002 |
| 18 | Kimbrough Oil Company | Iraan, TX 79744 | Oil Operator | Oct 2025 |
| 19 | Kimbrough, D. E. | Iraan, TX 79744 | Oil & Gas Operator | Oct 2025 |
| 20 | Kimsey, Roy E., Jr. | Midland, TX 79701 | Oil & Gas Operator | May 2018 |
| 21 | Kinder Morgan Production Co LLC | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 22 | Kinder Morgan Production Co LP | Midland, TX 79701 | Oil & Gas Operator | Jul 2007 |
| 23 | Kinder Morgan Sacroc LP | Snyder, TX 79549 | Oil & Gas Operator | Dec 2003 |
| 24 | King Oil & Resources Co | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 25 | Kinlaw Oil Corporation | Dallas, TX 75380 | Oil & Gas Operator | Oct 2025 |
| 26 | Kirkpatrick Oil Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Oct 2025 |
| 27 | KLM Petroleum Corp. | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 28 | Kneupper Oil, LLC | MC Camey, TX 79752 | Oil & Gas Operator | Oct 2025 |
| 29 | Kojo Energy, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Oct 2025 |
| 30 | Kokomo Oil Company | Houston, TX 77227 | Oil & Gas Operator | Apr 1998 |
| 31 | KRF Production Company LLC | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 32 | Kstone Energy, LLC | Oklahoma City, OK 73106 | Oil Operator | Oct 2025 |
| 33 | KZ Global Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |