| 101 | McGinness Oil Co | Wichita, KS 67202 | Oil & Gas Operator | Dec 2019 |
| 102 | Messman Corporation | Wichita, KS 67208 | Oil & Gas Operator | Feb 2026 |
| 103 | Messman-Rinehart | | Oil & Gas Operator | Mar 1991 |
| 104 | Mid-Continent Energy Corp. | Wichita, KS 67208 | Oil & Gas Operator | Feb 2026 |
| 105 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 106 | MTM Petroleum, Inc. | Kingman, KS 67068 | Oil & Gas Operator | Feb 2026 |
| 107 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 108 | Murfin Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2026 |
| 109 | Mustang Fuel Cor | | Oil & Gas Operator | Dec 1990 |
| 110 | MW Oil, Inc | | Oil & Gas Operator | Feb 2026 |
| 111 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Feb 2026 |
| 112 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 113 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 114 | National Oil Com | | Oil & Gas Operator | Oct 1992 |
| 115 | Natural Gas Expl | | Oil & Gas Operator | Jul 1990 |
| 116 | Nec Operating - Kansas, LLC | Southlake, TX 76092 | Oil & Gas Operator | Feb 2026 |
| 117 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Feb 2026 |
| 118 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Jun 2026 |
| 119 | North American D | | Oil & Gas Operator | Sep 1986 |
| 120 | North American Drilling & Exploration, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Aug 2015 |
| 121 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 122 | Northstar Investments, Inc. | Wichita, KS 67230 | Oil & Gas Operator | Feb 2026 |
| 123 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Apr 2026 |
| 124 | Oil Producers In | | Oil & Gas Operator | Dec 1996 |
| 125 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Jun 2026 |
| 126 | Oil Prop Company | | Oil & Gas Operator | Sep 1995 |
| 127 | Oil Property Man | | Oil & Gas Operator | Jun 1995 |
| 128 | Oneok Exploratio | | Oil & Gas Operator | Mar 1995 |
| 129 | Oryx Energy Comp | | Oil & Gas Operator | Apr 1991 |
| 130 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 131 | Oxford Explorati | | Oil & Gas Operator | Mar 1993 |
| 132 | Parten, Kenneth N. | St John, KS 67576 | Oil & Gas Operator | May 2009 |
| 133 | Patton Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 134 | Patton Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2007 |
| 135 | Petroglyph Operating Co | Boise, ID 83709 | Oil & Gas Operator | Jul 2017 |
| 136 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 137 | Petroleum Technologies, Inc. | Kansas City, MO 64112 | Oil & Gas Operator | Feb 2026 |
| 138 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Feb 2026 |
| 139 | Pintail Petroleu | | Oil & Gas Operator | Dec 1995 |
| 140 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 141 | Plum Creek Energy, LLC | Ellinwood, KS 67526 | Oil & Gas Operator | Feb 2026 |
| 142 | Prater Oil & Gas Operations, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Feb 2026 |
| 143 | Pratt Well Servi | | Oil & Gas Operator | Jul 1996 |
| 144 | Pratt Well Service, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Feb 2026 |
| 145 | Questa Energy Corporation | Amarillo, TX 79159 | Oil & Gas Operator | Jun 2026 |
| 146 | Rama Operating Company Inc | Stafford, KS 67578 | Oil & Gas Operator | Mar 2026 |
| 147 | Reach Petroleum | | Oil & Gas Operator | Jan 1994 |
| 148 | Red Bear Drillin | | Oil & Gas Operator | Sep 1992 |
| 149 | Red Hills Energy, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Feb 2026 |
| 150 | Richardson J Mar | | Oil & Gas Operator | Apr 1995 |
| 151 | Riley Resources, Inc . | Oklahoma City, OK 73162 | Gas Operator | Feb 2026 |
| 152 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Feb 2026 |
| 153 | Robert-Gay Energ | | Oil & Gas Operator | Jun 1992 |
| 154 | Robert-Gay Energy Enterprises | Hutchinson, KS 67501 | Oil Operator | Nov 1999 |
| 155 | Royal Drilling Inc | Russell, KS 67665 | Oil Operator | Feb 2026 |
| 156 | Rupe Oil Company Inc | Wichita, KS 67278 | Oil & Gas Operator | Feb 2026 |
| 157 | Sage Drilling Co Inc | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 158 | Sand Point LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Dec 2020 |
| 159 | Scheck Oil Operation | | Oil & Gas Operator | Feb 2026 |
| 160 | Shaw, George R. (Deceased) | Wichita, KS 67202 | Gas Operator | Dec 2009 |
| 161 | Sierra Madre LLC | Greensburg, KS 67054 | Oil & Gas Operator | May 2015 |
| 162 | Siroky Oil Management | Pratt, KS 67124 | Oil & Gas Operator | Feb 2026 |
| 163 | SMG Resources LLC | | Oil & Gas Operator | Feb 2026 |
| 164 | Sokan Operating, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Feb 2026 |
| 165 | Sonoma Resources LLC | Andover, KS 67002 | Oil & Gas Operator | Feb 2026 |
| 166 | Sterling Drillin | | Oil & Gas Operator | Mar 1992 |
| 167 | Strata Exploration, Inc. | Fairfield, IL 62837 | Oil & Gas Operator | Feb 2026 |
| 168 | Sunwest Explorat | | Oil & Gas Operator | Nov 1985 |
| 169 | T G T Petroleum Corporation | Wichita, KS 67275 | Oil & Gas Operator | Feb 2026 |
| 170 | Texaco Exploration & Prod Inc | Houston, TX 77236 | Oil & Gas Operator | Feb 2026 |
| 171 | Texas Energies I | | Oil & Gas Operator | Aug 1994 |
| 172 | TGT Petroleum Co | | Oil & Gas Operator | Apr 1995 |
| 173 | Thomas Garner, Inc. | St John, KS 67576 | Oil & Gas Operator | Feb 2026 |
| 174 | Tomkat Limited | | Oil & Gas Operator | Jul 1995 |
| 175 | Toto Energy, LLC | Spring, TX 77380 | Oil & Gas Operator | Dec 2019 |
| 176 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Mar 2026 |
| 177 | Turnco Drilling, Inc. | Portland, OR 97208 | Oil & Gas Operator | Dec 2009 |
| 178 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 179 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 2026 |
| 180 | Vincent Oil Corp | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 181 | Walters Drilling | | Oil Operator | Mar 1988 |
| 182 | Wapiti Petroleum, LLC | | Oil & Gas Operator | Feb 2026 |
| 183 | Weilert Michael | | Oil Operator | Oct 1993 |
| 184 | Wheatland Oil & | | Oil & Gas Operator | Aug 1984 |
| 185 | White & Ellis DR | | Oil & Gas Operator | Aug 1995 |
| 186 | White & Ellis Drilling, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 187 | Wilson Operating Company LLC | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2026 |
| 188 | Woodman & Iannitti Oil Company | Great Bend, KS 67530 | Oil & Gas Operator | Jan 2003 |
| 189 | Younger Energy Company | Wichita, KS 67206 | Oil & Gas Operator | Jun 2026 |
| 190 | Zenith Drilling | | Oil & Gas Operator | Aug 1995 |
| 191 | Zenith Drilling Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |