| 101 | Keener Oil Compa | | Oil & Gas Operator | Jul 1988 |
| 102 | Kennedy & Mitche | | Oil & Gas Operator | May 1990 |
| 103 | Kiowa Gas Company | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 104 | Kirkman W L Inco | | Oil & Gas Operator | Dec 1994 |
| 105 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |
| 106 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2025 |
| 107 | Landowner | Honolulu, HI | Oil & Gas Operator | Dec 2008 |
| 108 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 109 | Lasso Energy LLC | Chase, KS 67524 | Oil & Gas Operator | Dec 2025 |
| 110 | Lauck D R Oil Co | | Oil & Gas Operator | Oct 1995 |
| 111 | Loeb Herman L | | Oil & Gas Operator | Jan 1996 |
| 112 | Lotus Operating Company, L.L.C. | Wichita, KS 67204 | Oil & Gas Operator | Dec 2025 |
| 113 | Lyons & Lyons Inc | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2026 |
| 114 | Magnum Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2000 |
| 115 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 116 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 117 | Marathon Oil Com | | Oil & Gas Operator | Dec 1996 |
| 118 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Feb 2026 |
| 119 | Mark III Oil, Inc. | Wichita, KS 67206 | Oil Operator | Dec 2009 |
| 120 | Martin Oil Producers, Inc. | Garland, TX 75046 | Oil & Gas Operator | Aug 2013 |
| 121 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Feb 2026 |
| 122 | McGinness Energy Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Jan 2026 |
| 123 | McGinness Oil Co | Wichita, KS 67202 | Oil & Gas Operator | Dec 2019 |
| 124 | McGinness Oil Company Of Kansas, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Nov 2019 |
| 125 | McGinnis Oil | | Oil & Gas Operator | Dec 2002 |
| 126 | McNic Oil & Gas Midcontinent,Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 1999 |
| 127 | Mesa Operating L | | Oil & Gas Operator | Dec 1996 |
| 128 | Messenger Petroleum, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Dec 2025 |
| 129 | Mid-Continent Energy Corp. | Wichita, KS 67208 | Oil & Gas Operator | Dec 2025 |
| 130 | Midco Exploration, Inc. | Westmont, IL 60559 | Oil & Gas Operator | Dec 2025 |
| 131 | Molitor Oil, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Dec 2025 |
| 132 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Jan 2026 |
| 133 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 134 | Murfin Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 135 | Murray Oil And Gas LLC | Greensburg, KS 67054 | Oil & Gas Operator | Dec 2025 |
| 136 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 137 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 138 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 139 | Nec Operating - Kansas, LLC | Southlake, TX 76092 | Oil & Gas Operator | Dec 2025 |
| 140 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |
| 141 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Feb 2026 |
| 142 | Oil Producers In | | Oil & Gas Operator | Dec 1996 |
| 143 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 144 | Oil Prop Company | | Oil & Gas Operator | Sep 1995 |
| 145 | Oil Properties Co., Inc. | Wichita, KS 67208 | Gas Operator | Dec 2009 |
| 146 | Okmar Oil Compan | | Oil & Gas Operator | Feb 1995 |
| 147 | Oneok Exploratio | | Oil & Gas Operator | Mar 1995 |
| 148 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |
| 149 | P & M Petroleum | | Oil Operator | Mar 1998 |
| 150 | Patton Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 151 | Petro Locators, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |
| 152 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 153 | Petroleum Incorp | | Oil & Gas Operator | Apr 1993 |
| 154 | Petroleum Produc | | Oil & Gas Operator | Dec 1996 |
| 155 | Petroleum Production Management Inc | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 |
| 156 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 157 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Dec 2025 |
| 158 | Plano Petroleum | | Oil & Gas Operator | Dec 1994 |
| 159 | Plano Petroleum Corporation | McKinney, TX 75070 | Oil & Gas Operator | Dec 2019 |
| 160 | Plum Creek Energy, LLC | Ellinwood, KS 67526 | Oil & Gas Operator | Dec 2025 |
| 161 | Prater Oil & Gas Operations, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |
| 162 | Pratt Well Servi | | Oil & Gas Operator | Jul 1996 |
| 163 | Pratt Well Service, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |
| 164 | Production Drilling, Inc. | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 165 | Questar Exploration And Production Company Division Of Questar Urc Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2023 |
| 166 | Rama Operating Company Inc | Stafford, KS 67578 | Oil & Gas Operator | Feb 2026 |
| 167 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | Dec 2025 |
| 168 | Redland Resources LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2026 |
| 169 | Richardson J Mar | | Oil & Gas Operator | Apr 1995 |
| 170 | Richardson Oil | | Oil & Gas Operator | Dec 2019 |
| 171 | Richardson Oil Operating | | Oil & Gas Operator | Dec 2009 |
| 172 | Rine Exploration | | Oil & Gas Operator | Jul 1994 |
| 173 | Robert-Gay Energ | | Oil & Gas Operator | Jun 1992 |
| 174 | Roberts Resources, Inc. | Wichita, KS 67275 | Oil & Gas Operator | Dec 2025 |
| 175 | Robinson Oil Com | | Oil & Gas Operator | Feb 1995 |
| 176 | Sabine Productio | | Oil & Gas Operator | Mar 1994 |
| 177 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Apr 2026 |
| 178 | Seagull Operatin | | Oil & Gas Operator | Jul 1995 |
| 179 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 180 | Sidwell Oil & Ga | | Oil & Gas Operator | May 1993 |
| 181 | Sierra Madre LLC | Greensburg, KS 67054 | Oil & Gas Operator | May 2015 |
| 182 | Siroky Oil Management | Pratt, KS 67124 | Oil & Gas Operator | Dec 2025 |
| 183 | Southwest Operating Company | Overland Park, KS 66212 | Oil & Gas Operator | Mar 2012 |
| 184 | Southwind Petroleum Corp. | Wichita, KS 67203 | Oil & Gas Operator | Jun 2022 |
| 185 | Stelbar Oil Corp | Wichita, KS 67206 | Oil & Gas Operator | Aug 1995 |
| 186 | Strata Exploration, Inc. | Fairfield, IL 62837 | Oil & Gas Operator | Dec 2025 |
| 187 | Sundance Oil & Gas, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Mar 2012 |
| 188 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 189 | Sunwest Explorat | | Oil & Gas Operator | Nov 1985 |
| 190 | T G T Petroleum Corporation | Wichita, KS 67275 | Oil & Gas Operator | Dec 2025 |
| 191 | T. T. Production, Inc. | Haviland, KS 67059 | Oil & Gas Operator | Feb 2008 |
| 192 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 193 | Texas Energies I | | Oil & Gas Operator | Aug 1994 |
| 194 | Texkan Resources, LLC | Odessa, TX 79765 | Oil & Gas Operator | Jun 2025 |
| 195 | TGT Petroleum Co | | Oil & Gas Operator | Apr 1995 |
| 196 | Thomas Garner, Inc. | St John, KS 67576 | Oil & Gas Operator | Dec 2025 |
| 197 | Toto Energy, LLC | Spring, TX 77380 | Oil & Gas Operator | Dec 2019 |
| 198 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 199 | Trich Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2025 |
| 200 | Unit Petroleum Company | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2026 |