| 101 | Cirrus Production Company | Enid, OK 73702 | Oil & Gas Operator | Jan 2024 |
| 102 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2024 |
| 103 | CLV Oil & Gas Inc | Tulsa, OK 74169-0713 | Oil & Gas Operator | Apr 2020 |
| 104 | Co-St Oil Operating Co Inc | Enid, OK 73706 | Oil & Gas Operator | Apr 1997 |
| 105 | Colpitt Brothers Oil | Collinsville, OK 74021-0028 | Oil & Gas Operator | Apr 2020 |
| 106 | Colpitt Brothers Operating Co | Collinsville, OK 74021-0028 | Oil & Gas Operator | Feb 2024 |
| 107 | Colt Resources Corporation | Billings, MT 59103 | Oil & Gas Operator | Feb 2013 |
| 108 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 109 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 110 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 111 | Contango Resources LLC | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 112 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | May 2024 |
| 113 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 114 | Cooper Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 115 | Cordillera Energy Partners LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 116 | Coronado Petroleum Corporation | Oklahoma City, OK 73102-4803 | Oil & Gas Operator | Jan 2024 |
| 117 | Covington Oil Company Inc | Oklahoma City, OK 73154-1470 | Oil & Gas Operator | Feb 2024 |
| 118 | Cox Robert L | Blackwell, OK 74631 | Oil & Gas Operator | Dec 2023 |
| 119 | CPRC Inc | Tulsa, OK 74103-5037 | Oil & Gas Operator | Apr 1997 |
| 120 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2024 |
| 121 | Culp & Copple Oil Company | Cushing, OK 74023-1442 | Oil & Gas Operator | Apr 2022 |
| 122 | D & B Operating LLC | | Oil Operator | Jan 2023 |
| 123 | Daco, Inc. | Spearman, TX 79081 | Oil & Gas Operator | May 2024 |
| 124 | Dar-Lon Operating Company | Lamont, OK 74643 | Oil & Gas Operator | Oct 2000 |
| 125 | Darco Petroleum, Inc. | Bartlesville, OK 74005 | Oil & Gas Operator | Dec 2020 |
| 126 | Darling Dan Oil | | Oil & Gas Operator | Sep 2018 |
| 127 | Darling Oil Corporation | Lamont, OK 74643-0158 | Oil & Gas Operator | Jan 2024 |
| 128 | David E Morgan Inc | Danville, CA 94506-2035 | Oil & Gas Operator | Jan 2024 |
| 129 | Davis Bros. Oil Producers, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2020 |
| 130 | Davis, Joe D. | Fort Smith, AR 72903 | Gas Operator | Mar 2015 |
| 131 | Dawson-Markwell Exploration Co. | Oklahoma City, OK 73101 | Oil & Gas Operator | Jan 2024 |
| 132 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | Jan 2024 |
| 133 | Delong Oil & Gas Serv Inc | Drumright, OK 74030-0591 | Oil & Gas Operator | Nov 2023 |
| 134 | Demco Oil & Gas Company | Blackwell, OK 74631-4203 | Oil & Gas Operator | Jan 2024 |
| 135 | Denell Oil Corporation | Yukon, OK 73085 | Oil & Gas Operator | Jul 1994 |
| 136 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2024 |
| 137 | Devon Resources Corporation | Jenks, OK 74037-3525 | Oil & Gas Operator | Jan 2024 |
| 138 | Diamond Cross Oil Co LLC | Ponca City, OK 74601-1104 | Oil & Gas Operator | Jan 2024 |
| 139 | Diversified Production LLC | Minden, LA 71055 | Oil & Gas Operator | May 2024 |
| 140 | DMS Investments Inc | Tulsa, OK 74132-2690 | Oil & Gas Operator | Mar 2015 |
| 141 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 142 | Donray Petroleum LLC | Oklahoma City, OK 73112-7230 | Oil & Gas Operator | Jan 2024 |
| 143 | Drake Exploration LLC | Arkansas City, KS 67005 | Oil & Gas Operator | Jan 2024 |
| 144 | Dundee Oil & Supply Inc | Tulsa, OK 74101 | Oil & Gas Operator | Apr 2001 |
| 145 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 146 | Dyno Energy LLC | Oklahoma City, OK 73154-0964 | Oil & Gas Operator | Jan 2024 |
| 147 | Eagle River Energy Corporation | Broken Arrow, OK 74011 | Oil & Gas Operator | Jan 2024 |
| 148 | Earlsboro Energies Corporation | Oklahoma City, OK 73116-3605 | Oil & Gas Operator | Jan 2024 |
| 149 | Eberle C Fred | Blackwell, OK 74631 | Oil Operator | Jun 1993 |
| 150 | Edmonds Management Company | Richardson, TX 75081 | Oil & Gas Operator | Mar 2015 |
| 151 | Egan Resources Inc. | Katy, TX 77494 | Oil & Gas Operator | Oct 2016 |
| 152 | Egret Operating Company | Muskogee, OK 74402-1871 | Oil & Gas Operator | Jan 2024 |
| 153 | Emmaus Energy LLC | | Oil & Gas Operator | Aug 2022 |
| 154 | Empire Petroleum LLC | | Oil & Gas Operator | Jun 2019 |
| 155 | Enmark Gas Gathering L. P. | Dallas, TX 75252 | Oil & Gas Operator | Dec 2023 |
| 156 | Eratz Investments Inc. | Dallas, TX 75240 | Oil & Gas Operator | May 2024 |
| 157 | Esis Inc | | Oil & Gas Operator | Feb 2017 |
| 158 | Exok, Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2024 |
| 159 | Explo Oil Inc | Dallas, TX 75251 | Oil & Gas Operator | May 2024 |
| 160 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 161 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | May 2024 |
| 162 | F Davis Oil & Gas LLC | Cleveland, OK 74020-0270 | Oil Operator | Nov 2023 |
| 163 | Fairchild Well Service Inc | Ponca City, OK 74602-0470 | Oil & Gas Operator | Jun 2006 |
| 164 | Faulkner Corporation | Oklahoma City, OK 73154-9704 | Oil & Gas Operator | Jan 2017 |
| 165 | Femco SWD Inc | Enid, OK 73702-3907 | Oil Operator | Mar 2014 |
| 166 | Finlay Energy, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 1999 |
| 167 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | May 2024 |
| 168 | Flatlander Energy LLC | | Oil & Gas Operator | Jan 2024 |
| 169 | Flynn Energy Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Mar 1993 |
| 170 | Ford Tank Truck Service | | Oil Operator | Jan 2022 |
| 171 | Forest 1 Development Company | Denver, CO 80202-4966 | Oil & Gas Operator | Mar 2008 |
| 172 | Fossil Creek Resources LLC | Arlington, TX 76011 | Oil & Gas Operator | Mar 2015 |
| 173 | Fox Jr Jimmy D | Bartlesville, OK 74003 | Oil & Gas Operator | Nov 2005 |
| 174 | Franklin Donna | Gotebo, OK 73041 | Oil & Gas Operator | Feb 2024 |
| 175 | Fremont Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2004 |
| 176 | Fremont Exploration, Inc. | Oklahoma City, OK 73156 | Oil & Gas Operator | Nov 2014 |
| 177 | G & C Petroleum Inc | Yale, OK 74085-2502 | Oil & Gas Operator | Feb 2024 |
| 178 | G A W Oil Company LLC | Enid, OK 73702-3926 | Oil & Gas Operator | Jan 2024 |
| 179 | Ganer Mark Oil & Gas | Owasso, OK 74055 | Oil & Gas Operator | Aug 2005 |
| 180 | Ganer Oil Company | Blackwell, OK 74631-4221 | Oil & Gas Operator | Jan 2022 |
| 181 | Garry Davis Oil LLC | Tonkawa, OK 74653 | Oil & Gas Operator | Jan 2024 |
| 182 | Geo American Resources Inc | Tulsa, OK 74130-1575 | Oil & Gas Operator | Jan 2024 |
| 183 | Geo Engineering Inc | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 184 | Geo-Earth Exploration Co Inc | Stillwater, OK 74076 | Oil & Gas Operator | May 1994 |
| 185 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 186 | Geological & Engineering Consultants | | Oil & Gas Operator | Jan 2024 |
| 187 | Glacier Petroleum Co Okla Inc | Edmond, OK 73013-1977 | Oil & Gas Operator | Feb 2024 |
| 188 | GLB Exploration, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2024 |
| 189 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Jan 2024 |
| 190 | GLM Energy Inc | Oklahoma City, OK 73142 | Oil & Gas Operator | Jan 2024 |
| 191 | Golden Gas Production Company | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 192 | Grace 7 Operating LLC | Argyle, TX 76226 | Oil Operator | Apr 2022 |
| 193 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | May 2024 |
| 194 | Gray Lloyd Energy Inc | Oklahoma City, OK 73120-8112 | Oil & Gas Operator | Nov 2005 |
| 195 | Grayhorse Operating Inc | Tulsa, OK 74103-4439 | Oil & Gas Operator | Jan 2024 |
| 196 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 197 | Green Operating Company, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Feb 2023 |
| 198 | Green Valley Disposal Serv LLC | Waynoka, OK 73860-0194 | Oil Operator | Feb 2024 |
| 199 | Greer Family Trust | Ponca City, OK 74601-8126 | Oil Operator | Aug 2018 |
| 200 | Guest Petroleum Incorporated | Edmond, OK 73083-0805 | Oil & Gas Operator | Feb 2024 |