| 101 | Blackcat Oil Company | Glencoe, OK 74032 | Oil & Gas Operator | Mar 2025 |
| 102 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | May 2025 |
| 103 | Blackstock Petroleum Co | Tulsa, OK 74136-4940 | Oil & Gas Operator | Oct 1994 |
| 104 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2025 |
| 105 | Blue Grass Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 106 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Mar 2025 |
| 107 | Bluebonnet Oil LLC | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Mar 2025 |
| 108 | Bluehawk Properties Inc | Riverside, CA 92517-1045 | Oil & Gas Operator | Dec 2016 |
| 109 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Feb 2025 |
| 110 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Mar 2025 |
| 111 | Bond Drilling Company | Marietta, OK 73448-0372 | Oil & Gas Operator | Apr 2017 |
| 112 | Boone Operating Inc | Oklahoma City, OK 73118-6014 | Oil & Gas Operator | Feb 2025 |
| 113 | Booth John H Inc | Tulsa, OK 74170 | Oil Operator | Sep 2019 |
| 114 | Bracksieck Lloyd H | Boulder, CO 80303 | Oil & Gas Operator | Feb 2019 |
| 115 | Bradco Oil Inc | Cleveland, OK 74020-3520 | Oil Operator | Jun 2023 |
| 116 | Braden-Deem Inc | Wichita, KS 67226 | Oil & Gas Operator | Jan 2025 |
| 117 | Brady Brothers | Cushing, OK 74023 | Oil Operator | Apr 2014 |
| 118 | Brady Company LLC (The) | Cushing, OK 74023 | Oil & Gas Operator | Feb 2025 |
| 119 | Brady Fred D | Cleveland, OK 74020 | Oil & Gas Operator | Mar 1997 |
| 120 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 121 | Brewer Carroll L | Edmond, OK 73003-0010 | Oil & Gas Operator | Feb 2025 |
| 122 | Brichacek Jerry Lee | Drumright, OK 74030-9777 | Oil & Gas Operator | Jan 2020 |
| 123 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 124 | Bristow Resources Inc | Bristow, OK 74010-0659 | Oil & Gas Operator | Feb 2025 |
| 125 | Bronco Petroleum Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2014 |
| 126 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2025 |
| 127 | Brown Dorla M Trust | Tulsa, OK 74133-2926 | Oil & Gas Operator | Dec 2021 |
| 128 | Brown Gary E | Tecumseh, OK 74873-0355 | Oil & Gas Operator | Aug 2015 |
| 129 | Brown Vernon L & Bonita | Cleveland, OK 74020-4426 | Oil & Gas Operator | Apr 2009 |
| 130 | Brown, George R. Partnership,The | Houston, TX 77002 | Oil & Gas Operator | May 2006 |
| 131 | Bso Inc | Cleveland, OK 74020 | Oil & Gas Operator | Mar 2025 |
| 132 | Buccaneer Petroleum Inc | Tonkawa, OK 74653-2513 | Oil & Gas Operator | Jan 2013 |
| 133 | Bud'S Oil Company Inc. | Sperry, OK 74073 | Oil & Gas Operator | Dec 2025 |
| 134 | Burchfield Margaret S Dba Nu-Hope Oil Company | Earlsboro, OK 74840 | Oil & Gas Operator | Feb 2025 |
| 135 | Burk George E | Mannford, OK 74044-0593 | Oil & Gas Operator | Oct 2015 |
| 136 | Burkan Oil Company | Tulsa, OK 74137 | Oil & Gas Operator | Dec 1995 |
| 137 | Burt James & Charles Maybee | Sperry, OK 74073-8001 | Oil & Gas Operator | Nov 2014 |
| 138 | C & B Oil Company | Drumright, OK 74030 | Oil & Gas Operator | Mar 2025 |
| 139 | C & C Productions LLC | Muskogeee, OK 74402 | Oil & Gas Operator | Feb 2025 |
| 140 | C & J Exploration LLC | Colorado Springs, CO 80920-3946 | Oil & Gas Operator | Oct 2022 |
| 141 | C & L Oil Company | Cross Plains, TX 76443 | Oil & Gas Operator | May 2025 |
| 142 | C E L Inc | Bartlesville, OK 74006 | Oil & Gas Operator | Jan 2020 |
| 143 | C Rose Oil Co. | Midland, TX 79708 | Oil & Gas Operator | Feb 2025 |
| 144 | Cajeza Energy | Drumright, OK 74030 | Oil & Gas Operator | May 2013 |
| 145 | Caldwell Engineering & Construction Inc | Chandler, OK 74834-5420 | Oil & Gas Operator | Jan 2025 |
| 146 | Calumet Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2019 |
| 147 | Calvert Operating LLC | Oklahoma City, OK 73118 | Oil Operator | Mar 2025 |
| 148 | Calyx Energy LLC | Tulsa, OK 74146-3807 | Oil & Gas Operator | Feb 2020 |
| 149 | Camino Natural Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 150 | Camo Oil LLC | Stillwater, OK 74074 | Oil & Gas Operator | Mar 2025 |
| 151 | Candy Oil Production | Sand Springs, OK 74063-3410 | Oil Operator | Feb 2017 |
| 152 | Cane Creek Energy Partners Inc | Morris, OK 74445 | Oil & Gas Operator | Feb 2025 |
| 153 | Cannuck Resources Inc | Nowata, OK 74048 | Oil & Gas Operator | Aug 2000 |
| 154 | Canok International Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Feb 2025 |
| 155 | Cantrell Energy Corporation | Ada, OK 74820-0835 | Oil & Gas Operator | Feb 2025 |
| 156 | Cantrell Robert R | Ada, OK 74820 | Oil & Gas Operator | Feb 2025 |
| 157 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Mar 2025 |
| 158 | Capmac Inc | Tulsa, OK 74105-7119 | Oil & Gas Operator | Jan 2007 |
| 159 | Cardinal Oil LLC | Drumright, OK 74030 | Oil & Gas Operator | Jan 2025 |
| 160 | Carlson Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 161 | Carman Robert W | Bristow, OK 74010-3454 | Oil & Gas Operator | Feb 2025 |
| 162 | Carpenter Luther | Skiatook, OK 74070-9124 | Oil & Gas Operator | Feb 2025 |
| 163 | Carpenter R L | Sapulpa, OK 74067-0452 | Oil Operator | Mar 2007 |
| 164 | Carroll M R Dba Carroll Production Company | Sapulpa, OK 74066 | Oil & Gas Operator | Mar 2025 |
| 165 | Cartledge & Cartledge Oil Company Inc | Kiefer, OK 74041 | Oil & Gas Operator | Mar 2025 |
| 166 | Cartledge Energy LLC | Sapulpa, OK 74066-6623 | Oil & Gas Operator | Feb 2025 |
| 167 | Casey Musgrove Oil Company Inc | Ponca City, OK 74602 | Oil & Gas Operator | Feb 2025 |
| 168 | Cassidy Jr John | Stroud, OK 74079-0200 | Oil & Gas Operator | Nov 2014 |
| 169 | Castella Inc | Bartlesville, OK 74003-3712 | Oil & Gas Operator | Mar 2025 |
| 170 | Cayman Resources Corporation | Tulsa, OK 74119-1323 | Oil & Gas Operator | Jun 2001 |
| 171 | CBL Resources LLC | Tulsa, OK 74136-6308 | Oil & Gas Operator | Feb 2025 |
| 172 | CDG Inc | Sapulpa, OK 74066-6339 | Oil Operator | Oct 2020 |
| 173 | CDS Oil Company | Tulsa, OK 74147-1514 | Oil & Gas Operator | Mar 2015 |
| 174 | Centennial Resources Inc | Drumright, OK 74030-1234 | Oil & Gas Operator | Dec 2007 |
| 175 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2025 |
| 176 | Cewell Energy LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 177 | Chambers & Hendrix Oil & Gas | Skiatook, OK 74070-0726 | Oil & Gas Operator | Aug 2022 |
| 178 | Chanse Energy Corporation | Shreveport, LA 71165-1572 | Oil & Gas Operator | Sep 2021 |
| 179 | Chanse Petroleum Corporation | New York, NY 10165-1134 | Oil & Gas Operator | Feb 2015 |
| 180 | Chapman Jim | Bristow, OK 74010-1173 | Oil Operator | Apr 2021 |
| 181 | Chapman Oil Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 182 | Cherokee Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 183 | Cherokee Royalties & Minerals Inc | Duncan, OK 73533 | Oil & Gas Operator | Mar 2025 |
| 184 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2025 |
| 185 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 186 | Chief Well Service Inc | Drumright, OK 74030 | Oil & Gas Operator | Mar 1995 |
| 187 | Chizum Oil LLC | Wichita, KS 67211 | Oil & Gas Operator | Feb 2025 |
| 188 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 189 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 190 | Cimarron River Operating Co | Mannford, OK 74044 | Oil & Gas Operator | Feb 2025 |
| 191 | Circle 9 Resources LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Feb 2025 |
| 192 | Circle K Oil & Gas Inc | Sand Springs, OK 74063 | Oil & Gas Operator | Feb 2025 |
| 193 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2025 |
| 194 | Civic Energy Corporation | Colony, OK 73021 | Oil & Gas Operator | Mar 2025 |
| 195 | CK Resources | Cleveland, OK 74020-0772 | Oil Operator | Aug 2013 |
| 196 | Claborn Julia | Okmulgee, OK 74447-9781 | Oil & Gas Operator | Mar 2022 |
| 197 | Claremont Corporation | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2017 |
| 198 | Clark Operating Services, Inc. | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 199 | Clark Well Service | Depew, OK 74028-0296 | Oil & Gas Operator | Aug 2013 |
| 200 | Claybrook Drilling Co Inc | | Oil & Gas Operator | Sep 2014 |