| 101 | D & D Pipe & Equipment Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2005 |
| 102 | D-Pex Operating Company | | Oil & Gas Operator | Sep 2004 |
| 103 | Daco, Inc. | Spearman, TX 79081 | Oil & Gas Operator | May 2024 |
| 104 | Dallas Production, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2021 |
| 105 | Daniel Resource Dev Inc | Tomball, TX 77375-8919 | Oil & Gas Operator | Oct 2009 |
| 106 | Daniel-Price Exploration Co | Tulsa, OK 74119 | Gas Operator | Apr 2011 |
| 107 | Davis Operating Company | Elysian Field, TX 75642 | Oil & Gas Operator | May 2024 |
| 108 | Davis, Joe D. | Fort Smith, AR 72903 | Gas Operator | Mar 2015 |
| 109 | Deep Rock LLC | Tulsa, OK 74137-1612 | Gas Operator | Jun 2022 |
| 110 | Derrick Resources Inc. | Henryetta, OK 74437-4249 | Oil & Gas Operator | Jan 2024 |
| 111 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 112 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2024 |
| 113 | Devon Louisiana Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 114 | Dexxon, Inc. | Kiefer, OK 74041 | Oil & Gas Operator | Jan 2024 |
| 115 | Diamond A Inc. | Tulsa, OK 74137 | Oil & Gas Operator | Jun 2001 |
| 116 | Dixie Operating Company | Spring, TX 77379 | Oil & Gas Operator | Dec 2002 |
| 117 | DLKB Operating LLC | | Gas Operator | Jan 2024 |
| 118 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Feb 2024 |
| 119 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 120 | Draco Production Company | Tulsa, OK 74133 | Oil & Gas Operator | Jul 2012 |
| 121 | Drake Exploration Inc | Tulsa, OK 74105-4250 | Oil & Gas Operator | Jan 2024 |
| 122 | Duffer William R | Edmond, OK 73034-6761 | Oil & Gas Operator | Aug 2018 |
| 123 | Duncan Oil Properties, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2024 |
| 124 | Durango Resources Corp | Houston, TX 77043 | Oil & Gas Operator | May 2024 |
| 125 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 126 | Dyne Exploration Company | Plano, TX 75093-6512 | Oil & Gas Operator | Apr 2020 |
| 127 | E Lyle Johnson Inc | | Oil & Gas Operator | Feb 2024 |
| 128 | Eagle Energy PTR I LP | Houston, TX 77064 | Oil & Gas Operator | Feb 2015 |
| 129 | Eagle Gas Marketing Co | Oklahoma City, OK 73114-2202 | Oil & Gas Operator | Nov 2022 |
| 130 | Earlsboro Energies Corporation | Oklahoma City, OK 73116-3605 | Oil & Gas Operator | Jan 2024 |
| 131 | El Paso Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2016 |
| 132 | Enable Gas Transmission LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 133 | Energas Corporation | Oklahoma City, OK 73105-6422 | Oil & Gas Operator | Jan 2024 |
| 134 | Enerquest Oil & Gas LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Feb 2024 |
| 135 | Enersource Royalty Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2013 |
| 136 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | May 2024 |
| 137 | Enogex Products Corp | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Jun 2022 |
| 138 | Enogex Services Corporation | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Apr 2009 |
| 139 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | May 2024 |
| 140 | EP Energy E&P Company, LP | Houston, TX 77210 | Oil & Gas Operator | May 2022 |
| 141 | EP Operating LP | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 142 | Esco Exploration, Inc | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 143 | Esis Inc | | Oil & Gas Operator | Feb 2017 |
| 144 | Evans Production Co. | Pampa, TX 79066 | Oil & Gas Operator | Sep 2020 |
| 145 | Evolution Operating Company Inc | Houston, TX 77079 | Oil & Gas Operator | May 2024 |
| 146 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 147 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | May 2024 |
| 148 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2024 |
| 149 | Fair Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Dec 2000 |
| 150 | Fairway Midstream SVC & TRD | Tulsa, OK 74114 | Oil & Gas Operator | Jun 2006 |
| 151 | Faulconer Vernon E Inc | Tyler, TX 75711 | Oil & Gas Operator | Feb 2024 |
| 152 | Femco SWD Inc | Enid, OK 73702-3907 | Oil Operator | Mar 2014 |
| 153 | Fort Exploration Company | FT Smith, AR 72901 | Gas Operator | May 2001 |
| 154 | Fort Operating Company | Fort Smith, AR 72923 | Gas Operator | Nov 2018 |
| 155 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2024 |
| 156 | FP Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2008 |
| 157 | G & B Tank Truck Service | Binger, OK 73009 | Oil & Gas Operator | Jan 2008 |
| 158 | G M Oil Properties Inc | Eufaula, OK 74432-0841 | Oil & Gas Operator | Feb 2012 |
| 159 | Galaxy Energy Inc | Stigler, OK 74462-0733 | Gas Operator | Jan 2024 |
| 160 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 161 | Geo Engineering Inc | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 162 | Germany Operating Company | Houston, TX 77090 | Oil & Gas Operator | Sep 2011 |
| 163 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 164 | GHK Company LLC (The) | Oklahoma City, OK 73118-1120 | Oil & Gas Operator | Apr 2018 |
| 165 | Gla Inc | Norman, OK 73070 | Oil & Gas Operator | Jan 2024 |
| 166 | GLB Exploration, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2024 |
| 167 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Jan 2024 |
| 168 | Glenwood Operating LLC | | Gas Operator | Jan 2024 |
| 169 | Golden Gas Production Company | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 170 | Gothic Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2015 |
| 171 | Gothic Production Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2016 |
| 172 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 173 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | May 2024 |
| 174 | Great Yellowstone Corp. | | Oil & Gas Operator | Apr 1993 |
| 175 | Green Valley Disposal Serv LLC | Waynoka, OK 73860-0194 | Oil Operator | Feb 2024 |
| 176 | Greg Hall Oil & Gas LLC | Edmond, OK 73003 | Oil & Gas Operator | Jan 2024 |
| 177 | Gulfstream Petroleum Corp. | | Oil & Gas Operator | Feb 2002 |
| 178 | H2ox Operating LLC | | Oil Operator | Feb 2024 |
| 179 | Hadson Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 180 | Hall Edward L | Ada, OK 74820-3321 | Oil & Gas Operator | Jan 2024 |
| 181 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2023 |
| 182 | Ham Oil Company, LLC | | Oil Operator | Sep 2022 |
| 183 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Feb 2024 |
| 184 | Hart David | Chickasha, OK 73018-7756 | Oil & Gas Operator | Mar 2015 |
| 185 | HCG Energy Corporation & Subs | | Oil & Gas Operator | Mar 2015 |
| 186 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 187 | Headington Oil Company LLC | Dallas, TX 75204 | Oil & Gas Operator | Apr 2016 |
| 188 | Heartlands Development Co Inc | Bristow, OK 74010-3826 | Oil & Gas Operator | May 2017 |
| 189 | High Sierra Crude Oil& Marketing LLC | Ardmore, OK 73401 | Oil Operator | Nov 2013 |
| 190 | Hogback Exploration Inc | Fort Smith, AR 72916 | Oil & Gas Operator | Feb 2024 |
| 191 | Hoover & Wilson Exp & Prod Inc | Fort Smith, AR 72913-5171 | Gas Operator | Jul 2013 |
| 192 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2024 |
| 193 | Horizon Natural Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2019 |
| 194 | Howden Petroleum Corp | Wetumka, OK 74883 | Gas Operator | Nov 1997 |
| 195 | HRB Operating Company Inc | Bridgeport, TX 76426 | Oil & Gas Operator | May 2024 |
| 196 | HRC Production Co | Houston, TX 77002 | Oil & Gas Operator | Jan 2024 |
| 197 | Huitt Joe A | Tulsa, OK 74103 | Oil & Gas Operator | May 2001 |
| 198 | Huitt Joe A Rev Trust | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2009 |
| 199 | Hunt Energy Corporation | | Oil & Gas Operator | Feb 2002 |
| 200 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |