| 101 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | May 2025 |
| 102 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 103 | Ness Crude Oil I | | Oil Operator | Mar 1994 |
| 104 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Mar 2025 |
| 105 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Jun 2025 |
| 106 | Oil Producers In | | Oil & Gas Operator | Dec 1996 |
| 107 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 108 | Okmar Oil Compan | | Oil & Gas Operator | Feb 1995 |
| 109 | Oryx Energy Comp | | Oil & Gas Operator | Apr 1991 |
| 110 | Oxford Explorati | | Oil & Gas Operator | Mar 1993 |
| 111 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Jul 2025 |
| 112 | Palomino Petrole | | Oil & Gas Operator | Dec 1995 |
| 113 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Mar 2025 |
| 114 | Patterson Energy LLC | Hays, KS 67601 | Oil Operator | Mar 2025 |
| 115 | Pendleton Land & | | Oil Operator | Aug 1985 |
| 116 | Petroleum Incorp | | Oil & Gas Operator | Apr 1993 |
| 117 | Petx Petroleum C | | Oil Operator | Nov 1993 |
| 118 | Phillips Petrole | | Oil & Gas Operator | May 1995 |
| 119 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Mar 2025 |
| 120 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 121 | R & B Oil & Gas | | Oil & Gas Operator | Jul 1995 |
| 122 | Rains & Williams | | Oil & Gas Operator | Nov 1995 |
| 123 | Rains And Williamson Oil Co. | Wichita, KS 67277 | Oil & Gas Operator | Mar 2025 |
| 124 | Rama Operating Co., Inc. | Stafford, KS 67578 | Oil & Gas Operator | Apr 2025 |
| 125 | Raydon Exploration, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Jul 2025 |
| 126 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Mar 2025 |
| 127 | Redbud Oil & Gas Operating, LLC | Spring, TX 77379 | Oil & Gas Operator | Mar 2025 |
| 128 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | May 2025 |
| 129 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 |
| 130 | Rine Exploration | | Oil & Gas Operator | Jul 1994 |
| 131 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 132 | Ritchie Exploration | | Oil Operator | Aug 1995 |
| 133 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Mar 2025 |
| 134 | Robinson Oil Com | | Oil & Gas Operator | Feb 1995 |
| 135 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Jul 2025 |
| 136 | Schulein Company LLC | Denver, CO 80246 | Oil & Gas Operator | Mar 2025 |
| 137 | Schwien Tank & Lease Service Inc | Bazine, KS 67516 | Oil Operator | May 2000 |
| 138 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | May 2025 |
| 139 | Sharon Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Aug 2010 |
| 140 | Slawson, Donald C. | Wichita, KS 67202 | Oil & Gas Operator | Oct 2024 |
| 141 | Stanlee Oil LLC | | Oil Operator | Mar 2025 |
| 142 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
| 143 | T & D Oil Compan | | Oil Operator | Jan 1992 |
| 144 | Taylor Oil Co. | Edmond, OK 73034 | Oil & Gas Operator | Mar 2025 |
| 145 | Thomas Garner, Inc. | St John, KS 67576 | Oil & Gas Operator | Mar 2025 |
| 146 | Thunderbird Dril | | Oil & Gas Operator | Nov 1995 |
| 147 | Thunderbird Drilling, Inc. | Wichita, KS 67207 | Oil Operator | Oct 2008 |
| 148 | Tko Investments, Inc. | Dodge City, KS 67801 | Oil & Gas Operator | Mar 2025 |
| 149 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | May 2025 |
| 150 | Trek Aec, LLC | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 151 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Jul 2025 |
| 152 | Triple Crown Operating LLC | Tulsa, OK 74114 | Oil Operator | Mar 2025 |
| 153 | True Oil Company | Casper, WY 82602 | Oil & Gas Operator | Aug 2003 |
| 154 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |
| 155 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |
| 156 | Viking Resources | | Oil & Gas Operator | Sep 1995 |
| 157 | Viking Resources, Inc. | Stafford, TX 77477 | Oil & Gas Operator | Jul 2025 |
| 158 | Vincent Oil Corp | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 159 | Vintage Petroleu | | Oil & Gas Operator | Dec 1995 |
| 160 | White & Ellis DR | | Oil & Gas Operator | Aug 1995 |
| 161 | White Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Mar 2025 |
| 162 | Whitetail Crude, Inc | Ness City, KS 67560 | Oil & Gas Operator | Mar 2025 |
| 163 | Younger Energy Company | Wichita, KS 67206 | Oil & Gas Operator | Jul 2025 |
| 164 | Zinszer Oil Co., Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |