| 101 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2023 |
| 102 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Feb 2024 |
| 103 | Brichacek Jerry Lee | Drumright, OK 74030-9777 | Oil & Gas Operator | Jan 2020 |
| 104 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 105 | Brittany Energy LLC | San Antonio, TX 78209-0127 | Oil & Gas Operator | May 2019 |
| 106 | Brock SR Kirby L | Stillwater, OK 74074-7206 | Oil Operator | Mar 2013 |
| 107 | Bronco Petroleum Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2014 |
| 108 | Brooks Energy Company | Tulsa, OK 74114-3304 | Oil & Gas Operator | Jul 2008 |
| 109 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 110 | Brown Curt Operating Company | Tulsa, OK 74105 | Oil Operator | Nov 1998 |
| 111 | Brown Dorla M Trust | Tulsa, OK 74133-2926 | Oil & Gas Operator | Dec 2021 |
| 112 | Brown Mikal R Oil LLC | Cleveland, OK 74020-6475 | Oil Operator | Dec 2022 |
| 113 | Bso Inc | Cleveland, OK 74020-0597 | Oil & Gas Operator | Feb 2024 |
| 114 | Buccaneer Petroleum Inc | Tonkawa, OK 74653-2513 | Oil & Gas Operator | Jan 2013 |
| 115 | Buntin Ronnie | Maramec, OK 74045-4500 | Oil & Gas Operator | Sep 2019 |
| 116 | Butler Petroleum Corp | Norman, OK 73069-7111 | Oil & Gas Operator | Dec 1998 |
| 117 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |
| 118 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
| 119 | BWB Resources Inc | Colorado Springs, CO 80908-7204 | Oil & Gas Operator | Jan 2016 |
| 120 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | Apr 2024 |
| 121 | C & B Energy Resources | Bartlesville, OK 74006 | Oil & Gas Operator | Mar 2015 |
| 122 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Feb 2024 |
| 123 | C S Petroleum Inc | Norman, OK 73070 | Oil & Gas Operator | Dec 2023 |
| 124 | Caldwell Engineering & Construction Inc | | Oil & Gas Operator | Mar 2022 |
| 125 | Callie Oil Company LLC | | Oil & Gas Operator | Jan 2024 |
| 126 | Calyx Energy LLC | Tulsa, OK 74146-3807 | Oil & Gas Operator | Feb 2020 |
| 127 | Canaan Energy Corporation | Oklahoma City, OK 73154-8806 | Oil & Gas Operator | Mar 2015 |
| 128 | Canadian Exploration Corp | | Oil & Gas Operator | Oct 1994 |
| 129 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Mar 2024 |
| 130 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742-0698 | Oil Operator | Dec 2019 |
| 131 | Cardinal Oil LLC | Drumright, OK 74030-5820 | Oil & Gas Operator | Jan 2024 |
| 132 | Casa Grande Exploration Company | | Oil & Gas Operator | Dec 2023 |
| 133 | Casillas Petroleum Corp | Satanta, KS 67870 | Oil & Gas Operator | Feb 2024 |
| 134 | Cason William J | Santee, CA 92071-2765 | Oil Operator | Sep 2019 |
| 135 | Cassidy Jr John | Stroud, OK 74079-0200 | Oil & Gas Operator | Nov 2014 |
| 136 | Castle Exploration Company Inc | Blue Bell, PA 19422 | Oil & Gas Operator | May 2018 |
| 137 | Castlerock Resources Inc | Oklahoma City, OK 73116-3710 | Oil & Gas Operator | Jul 2020 |
| 138 | CB Oil Company | Drumright, OK 74030-0176 | Oil & Gas Operator | Jan 2024 |
| 139 | Cbo Oil And Gas LLC | | Oil Operator | Feb 2024 |
| 140 | CDS Oil Company | Tulsa, OK 74147-1514 | Oil & Gas Operator | Mar 2015 |
| 141 | Cei Operating LLC | Katy, TX 77449 | Oil & Gas Operator | Apr 2024 |
| 142 | Central Ok Reclamation LLC | | Oil & Gas Operator | Jun 2014 |
| 143 | Challenge Operating Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 144 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Feb 2024 |
| 145 | Charter Services LLC | | Oil Operator | Feb 2024 |
| 146 | Cher Oil Company LTD | Ripley, OK 74062-6227 | Oil & Gas Operator | Jan 2024 |
| 147 | Cherokee Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 148 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2024 |
| 149 | Chizum Oil LLC | Wichita, KS 67211 | Oil & Gas Operator | Feb 2024 |
| 150 | Cimarron River Operating Co | Mannford, OK 74044-0289 | Oil & Gas Operator | Jan 2024 |
| 151 | Cimarron Valley Energy Inc | Stillwater, OK 74076 | Oil Operator | Apr 2015 |
| 152 | Circle 9 Resources LLC | | Oil & Gas Operator | Jan 2024 |
| 153 | Cirrus Production Company | Enid, OK 73702 | Oil & Gas Operator | Jan 2024 |
| 154 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Apr 2024 |
| 155 | Claremont Corporation | Tulsa, OK 74101-3226 | Oil & Gas Operator | Feb 2017 |
| 156 | Claremont Exploration Inc | Tulsa, OK 74103-4107 | Oil & Gas Operator | Jun 1997 |
| 157 | Clay Investments LLC | Stillwater, OK 74075-3600 | Oil & Gas Operator | Jan 2021 |
| 158 | Cloer VIrgil R | Oklahoma City, OK 73121 | Oil & Gas Operator | Apr 1993 |
| 159 | CMS Nomeco Oil & Gas Co. | Jackson, MI 49201 | Oil & Gas Operator | Jan 2015 |
| 160 | CMT Operating LLC | Cleveland, OK 74020-0113 | Oil & Gas Operator | Mar 2015 |
| 161 | CMX Inc Of Kansas | Wichita, KS 67206-2561 | Oil & Gas Operator | Feb 2024 |
| 162 | Co-St Oil Operating Co Inc | Enid, OK 73706 | Oil & Gas Operator | Apr 1997 |
| 163 | Coastal Oils Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2013 |
| 164 | Cochran Industrial Corporation | Cushing, OK 74023-1427 | Oil & Gas Operator | Apr 2001 |
| 165 | Colorado Gas Compression Inc | Longmont, CO 80501-5868 | Oil & Gas Operator | Aug 2013 |
| 166 | Colpitt Brothers Oil | Collinsville, OK 74021-0028 | Oil & Gas Operator | Apr 2020 |
| 167 | Colpitt Brothers Operating Co | Collinsville, OK 74021-0028 | Oil & Gas Operator | Feb 2024 |
| 168 | Compass Resources | Enid, OK 73702 | Oil & Gas Operator | Dec 2007 |
| 169 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 170 | Consol Oil Recvry/Ener Co Inc | Cushing, OK 74023 | Oil Operator | Nov 1993 |
| 171 | Consolidated Peto Equity LTD | La Crescenta, CA 91214 | Oil & Gas Operator | Dec 1996 |
| 172 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 173 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Apr 2024 |
| 174 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 175 | Cooper Lisa L | Cushing, OK 74023 | Oil & Gas Operator | Mar 2015 |
| 176 | Cooper Mineral Group Inc | Bellaire, TX 77401 | Oil & Gas Operator | Feb 2004 |
| 177 | Cornelius Petroleum Inc | Kellyville, OK 74039 | Oil & Gas Operator | Jan 2024 |
| 178 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 179 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 180 | Covington Oil Company Inc | Oklahoma City, OK 73154-1470 | Oil & Gas Operator | Feb 2024 |
| 181 | Cox Linda | Bristow, OK 74010-0808 | Oil & Gas Operator | Jan 2018 |
| 182 | Crain & Deisenroth | Tulsa, OK 74103-4433 | Oil & Gas Operator | Mar 2015 |
| 183 | Crain & Deisenroth LLC | Tulsa, OK 74104-6511 | Oil & Gas Operator | Apr 2014 |
| 184 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 185 | Cromer Carroll Oil & Gas LLC | | Oil & Gas Operator | Jan 2024 |
| 186 | Cross Don | Cushing, OK 74023-6316 | Oil & Gas Operator | Feb 2022 |
| 187 | Cross Robert | | Oil Operator | Jan 2024 |
| 188 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2023 |
| 189 | Cross Timbers Production Co | Oklahoma City, OK 73102-5605 | Oil & Gas Operator | Mar 2005 |
| 190 | Crow Creek Operating Co III LLC | | Oil & Gas Operator | Apr 2015 |
| 191 | Crown Energy Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Jan 2024 |
| 192 | Crude Marketing & Trans Inc | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2017 |
| 193 | Cudd Operating Corp. | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2020 |
| 194 | Culp & Copple Oil Company | Cushing, OK 74023-1442 | Oil & Gas Operator | Apr 2022 |
| 195 | Cundiff Harold | Perkins, OK 74059-4199 | Oil & Gas Operator | Jan 2024 |
| 196 | Cundiff Jack | Perkins, OK 74059-4198 | Oil & Gas Operator | Apr 2014 |
| 197 | D & B Operating LLC | | Oil Operator | Jan 2023 |
| 198 | D & G Oil & Gas Company Inc | Enid, OK 73702-2027 | Oil & Gas Operator | Nov 2021 |
| 199 | D & J Oil Company Of Okla Inc | Enid, OK 73706-0129 | Oil & Gas Operator | May 1999 |
| 200 | D & M Production Co Inc | Drumright, OK 74030-0232 | Oil & Gas Operator | Jan 2024 |