| 101 | Blue Quail Oil & Gas Inc | Yukon, OK 73099 | Oil & Gas Operator | Dec 2004 |
| 102 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Oct 2025 |
| 103 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 104 | BLX Inc | Edmond, OK 73013 | Oil & Gas Operator | Sep 2025 |
| 105 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Oct 2025 |
| 106 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Oct 2025 |
| 107 | Boone And Boone Oil Co | Perry, OK 73077 | Oil & Gas Operator | Mar 2008 |
| 108 | Bossa Alan Dba The Land Company | Ringling, OK 73456-2088 | Oil & Gas Operator | Jul 2025 |
| 109 | Bostick Services Corporation | Crescent, OK 73028 | Oil & Gas Operator | Oct 2025 |
| 110 | Boswell Energy Corporation | Oklahoma City, OK 73114-7401 | Oil & Gas Operator | Nov 2004 |
| 111 | Boyle Philip Inc | Norman, OK 73072-6913 | Oil & Gas Operator | Jun 1999 |
| 112 | Boyle Phillip Inc | Norman, OK 73072 | Oil & Gas Operator | Mar 2015 |
| 113 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 114 | Braden Companies Inc | Edmond, OK 73013-3671 | Oil & Gas Operator | Oct 2025 |
| 115 | Brady Fred D | Cleveland, OK 74020 | Oil & Gas Operator | Mar 1997 |
| 116 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 117 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 118 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Sep 2025 |
| 119 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 120 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 121 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Oct 2025 |
| 122 | Briscoe Oil Company | Kingfisher, OK 73750-2322 | Oil & Gas Operator | Apr 2014 |
| 123 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 124 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 125 | Bromar Oil Company | Fairview, OK 73737-0006 | Oil & Gas Operator | Apr 2014 |
| 126 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 127 | Brown & Borelli, Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2025 |
| 128 | Brown, Perry B | | Oil & Gas Operator | Apr 2024 |
| 129 | Bunyard Jerry L | Stroud, OK 74079 | Oil & Gas Operator | Oct 2024 |
| 130 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 131 | Buxton Energy LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Apr 2014 |
| 132 | Buxton Fred M | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Feb 2007 |
| 133 | C & A Oil Company | Edmond, OK 73013-9413 | Oil & Gas Operator | Mar 2015 |
| 134 | C & D Drilling Company | Hennepin, OK 73046 | Oil & Gas Operator | Mar 2007 |
| 135 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Oct 2025 |
| 136 | C & M Exploration LLC | Tulsa, OK 74159-1331 | Oil & Gas Operator | Jun 2014 |
| 137 | C & Y Casing Pulling Company | Duncan, OK 73533 | Oil & Gas Operator | Oct 2025 |
| 138 | C E D LC | Enid, OK 73702-0326 | Oil & Gas Operator | Oct 2021 |
| 139 | C F & L Producing Co | | Oil & Gas Operator | Sep 2000 |
| 140 | C L & S Oil Company Inc | Perry, OK 73077-0841 | Oil & Gas Operator | Jan 2018 |
| 141 | Callon Petroleum Company | Natchez, MS 39120 | Oil & Gas Operator | Jan 2000 |
| 142 | Canaan Energy Corporation | Oklahoma City, OK 73154-8806 | Oil & Gas Operator | Mar 2015 |
| 143 | Canok International Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Oct 2025 |
| 144 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Oct 2025 |
| 145 | Canyon Exploration Co. | Amarillo, TX 79105 | Oil & Gas Operator | Oct 2025 |
| 146 | Capitol Well Servicing Co., Inc. | Oklahoma City, OK 73143 | Oil & Gas Operator | May 2023 |
| 147 | Capmac Inc | Tulsa, OK 74105-7119 | Oil & Gas Operator | Jan 2007 |
| 148 | Carl Humphries Inc | Piedmont, OK 73078-0514 | Oil & Gas Operator | Oct 2025 |
| 149 | Carlson Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 150 | Carmen Field LP | Tulsa, OK 74135 | Oil & Gas Operator | Mar 2008 |
| 151 | Casselman-Sheely | Emporia, KS 66801 | Oil & Gas Operator | Oct 2021 |
| 152 | Cassidy Jr John | Stroud, OK 74079-0200 | Oil & Gas Operator | Nov 2014 |
| 153 | Cayman Exploration Corp | Tulsa, OK 74119-1323 | Oil & Gas Operator | Jun 2001 |
| 154 | CB Oil Company | Drumright, OK 74030 | Oil & Gas Operator | Jul 2025 |
| 155 | CDS Oil Company | Tulsa, OK 74147-1514 | Oil & Gas Operator | Mar 2015 |
| 156 | Cei Petroleum Inc | Tulsa, OK 74103-4141 | Oil & Gas Operator | Jul 2016 |
| 157 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2025 |
| 158 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Oct 2025 |
| 159 | Challenge Operating Inc | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 160 | Champ Oil Company | Hickory Creek, TX 75065 | Oil & Gas Operator | Dec 2020 |
| 161 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 162 | Chermac Energy Corporation | Edmond, OK 73083 | Oil & Gas Operator | Apr 2020 |
| 163 | Cherokee Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 164 | Cherry, William H., Inc. | Oklahoma City, OK 73125 | Oil & Gas Operator | Mar 2015 |
| 165 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2025 |
| 166 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 167 | Chisholm Oil And Gas Operating LLC | Tulsa, OK 74103-3522 | Oil & Gas Operator | Oct 2025 |
| 168 | Chisos Exploration Inc | Enid, OK 73703 | Oil & Gas Operator | Dec 2004 |
| 169 | Chizum Oil LLC | Wichita, KS 67211 | Oil & Gas Operator | Oct 2025 |
| 170 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 171 | Cimarron Operating Company | Oklahoma City, OK 73112-3967 | Oil & Gas Operator | May 2011 |
| 172 | Cimarron Petroleum Corporation | Houston, TX 77057-2696 | Oil & Gas Operator | Sep 2025 |
| 173 | Circle 9 Resources LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Oct 2025 |
| 174 | Cirrus Production Company | Enid, OK 73702 | Oil & Gas Operator | Oct 2025 |
| 175 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Dec 2025 |
| 176 | Citizen Energy III LLC | Devner, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 177 | Citrus Energy Corporation | Castle Rock, CO 80104 | Oil & Gas Operator | Mar 2020 |
| 178 | Civic Energy Corporation | Colony, OK 73021 | Oil & Gas Operator | Oct 2025 |
| 179 | Claiborne-McDonald Inc | Chickasha, OK 73018 | Oil Operator | Jul 2007 |
| 180 | Claremont Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Feb 2017 |
| 181 | Claremont Exploration Inc | Tulsa, OK 74103-4107 | Oil & Gas Operator | Jun 1997 |
| 182 | Clay A Muegge | | Oil & Gas Operator | Oct 2025 |
| 183 | Clifton & Associates Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2020 |
| 184 | Clifton Consulting Inc | Piedmont, OK 73078-0180 | Gas Operator | Sep 2025 |
| 185 | Cloer VIrgil R | Oklahoma City, OK 73121 | Oil & Gas Operator | Apr 1993 |
| 186 | CM Oil Co. | FT Stockton, TX 79735 | Oil & Gas Operator | Dec 2025 |
| 187 | CMX Inc Of Kansas | Wichita, KS 67206-2561 | Oil & Gas Operator | Oct 2025 |
| 188 | Coaleum Corporation | Dallas, TX 75205 | Oil & Gas Operator | Jan 2001 |
| 189 | Coastal Oils Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2013 |
| 190 | Cochran Industrial Corporation | Cushing, OK 74023-1427 | Oil & Gas Operator | Apr 2001 |
| 191 | COG Petroleum Corporation | Oklahoma City, OK 73116-7326 | Oil & Gas Operator | Mar 2019 |
| 192 | Columbus Energy Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 193 | Combined Resources Corporation | Edmond, OK 73083 | Oil & Gas Operator | Dec 2025 |
| 194 | Compadre Drilling & Expl Corp | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2015 |
| 195 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 196 | Confed Oil Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 197 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 198 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 199 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 200 | Contango Midstream Company | Houston, TX 77002-3023 | Oil & Gas Operator | Sep 2025 |