| 101 | Brown Jr Roy M | Sasakwa, OK 74867 | Oil Operator | Nov 2016 |
| 102 | Brown L C Company | Ada, OK 74820-7916 | Oil & Gas Operator | Nov 2021 |
| 103 | Bryant D G And Company | Midlothian, TX 76065-3628 | Oil & Gas Operator | Mar 2025 |
| 104 | Bulldog Production Inc | Seminole, OK 74868 | Oil Operator | Nov 2024 |
| 105 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
| 106 | Byng Operating LLC | Ada, OK 74820-0677 | Oil & Gas Operator | Apr 2025 |
| 107 | C & C Tank Truck Service Inc | Holdenville, OK 74848 | Oil Operator | Feb 2012 |
| 108 | C & J Trucks LLC | Seminole, OK 74868-5406 | Oil & Gas Operator | Jun 2025 |
| 109 | C & L Enterprises Inc | Lindsay, OK 73052 | Oil & Gas Operator | Apr 2025 |
| 110 | C & W Oil Inc | | Oil & Gas Operator | Aug 2016 |
| 111 | C H E Company Inc | Shawnee, OK 74801 | Oil Operator | Feb 2012 |
| 112 | C.D. Operating Company, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 113 | Calvert Exploration Co | | Oil & Gas Operator | Apr 1993 |
| 114 | Campbell Don G | Konawa, OK 74849 | Oil Operator | Feb 1997 |
| 115 | Cantrell Energy Corporation | Ada, OK 74820-0835 | Oil & Gas Operator | Apr 2025 |
| 116 | Cantrell Robert R | Ada, OK 74820 | Oil & Gas Operator | Apr 2025 |
| 117 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | May 2025 |
| 118 | Cap Oil Company | Ada, OK 74820 | Oil Operator | Apr 2025 |
| 119 | Carbon Ridge Energy LLC | Norman, OK 73069 | Oil & Gas Operator | Apr 2025 |
| 120 | Carmac Energy Company LLC | Seminole, OK 74868 | Oil Operator | Apr 2025 |
| 121 | Carmac Energy Corporation | Dallas, TX 75219-2311 | Oil & Gas Operator | Apr 2025 |
| 122 | Carmichael Oil & Gas Company | Vallejo, CA 94591-5653 | Oil & Gas Operator | Apr 2014 |
| 123 | Carney Mark C & Karen M | Dallas, TX 75206-4010 | Oil & Gas Operator | Oct 1994 |
| 124 | Carruth David C Family Trust | Russellville, AR 72811-2061 | Oil Operator | Aug 2002 |
| 125 | Cartledge & Cartledge Oil Company Inc | Kiefer, OK 74041 | Oil & Gas Operator | May 2025 |
| 126 | Carver Harry | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 2000 |
| 127 | Castelli Exploration, Inc. | Oklahoma City, OK 73162 | Oil & Gas Operator | Apr 2025 |
| 128 | CDS Oil Company | Tulsa, OK 74147-1514 | Oil & Gas Operator | Mar 2015 |
| 129 | Cenpat Operating LLC | Houston, TX 77042-3044 | Oil & Gas Operator | Apr 2025 |
| 130 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2025 |
| 131 | CG Oil Co. | San Antonio, TX 78232 | Oil & Gas Operator | Mar 2011 |
| 132 | Charter Oak Production Co LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2025 |
| 133 | Cher Oil Company LTD | Ripley, OK 74062 | Oil & Gas Operator | May 2025 |
| 134 | Chermac Energy Corporation | Edmond, OK 73083 | Oil & Gas Operator | Apr 2020 |
| 135 | Cherokee Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 136 | Cherokee Royalties & Minerals Inc | Duncan, OK 73533 | Oil & Gas Operator | May 2025 |
| 137 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2025 |
| 138 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 139 | Chinn, Velma D | | Oil Operator | Mar 2015 |
| 140 | Circle 9 Resources LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Apr 2025 |
| 141 | Citadel Production Company, Inc. | Denver, CO 80201 | Oil Operator | Sep 1996 |
| 142 | Clark Krista | Ada, OK 74820-8595 | Oil Operator | Sep 2001 |
| 143 | Claybrook Drilling Co Inc | | Oil & Gas Operator | Sep 2014 |
| 144 | Claybrook Production Co. Inc. | Wewoka, OK 74884-1380 | Oil & Gas Operator | Jun 2014 |
| 145 | Cleary Jo Anne | Saint Louis, OK 74866 | Oil Operator | Mar 2025 |
| 146 | Cleere Operating LLC | Shawnee, OK 74804-2610 | Oil Operator | Apr 2025 |
| 147 | Clifton & Associates Inc | Tulsa, OK 74133 | Oil & Gas Operator | May 2020 |
| 148 | Cloer VIrgil R | Oklahoma City, OK 73121 | Oil & Gas Operator | Apr 1993 |
| 149 | CM Exploration Company Inc. | | Oil & Gas Operator | Apr 2009 |
| 150 | CMT Oil & Gas Company Inc | Tulsa, OK 74133-6724 | Oil & Gas Operator | Apr 2025 |
| 151 | Coastal Oils Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2013 |
| 152 | Colpitt Brothers Oil | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2020 |
| 153 | Columbus Oil Company | Seminole, OK 74868 | Oil & Gas Operator | May 2025 |
| 154 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 155 | Confederate Spooling Inc | Okemah, OK 74859-2409 | Oil & Gas Operator | Apr 2020 |
| 156 | Conner Jelly | Seminole, OK 74868 | Oil & Gas Operator | Mar 1996 |
| 157 | Conner Production Co LLC | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |
| 158 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 159 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 160 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 161 | Consolidated Production Inc. | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |
| 162 | Consolidated Properties | Tulsa, OK 74129 | Oil & Gas Operator | Jan 2017 |
| 163 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Jul 2025 |
| 164 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 165 | Cook Oil Company | Wewoka, OK 74884 | Oil & Gas Operator | Sep 2015 |
| 166 | Cook William Glenn | Wewoka, OK 74884-0727 | Oil & Gas Operator | Nov 2000 |
| 167 | Cooper John T | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 168 | Cooper Oil Inc | Duncan, OK 73534 | Oil & Gas Operator | Sep 2014 |
| 169 | Cornelius Petroleum Inc | | Oil & Gas Operator | May 2025 |
| 170 | Cougar Energy Investment LLC | Spring, TX 77387-7277 | Oil & Gas Operator | Sep 2014 |
| 171 | CPRP Services LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Apr 2025 |
| 172 | Criswell Energy LLC | Montezuma, IA 50171-8500 | Oil & Gas Operator | Oct 2022 |
| 173 | Cross, Don E | | Oil & Gas Operator | Jan 2013 |
| 174 | Crown Energy Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Apr 2025 |
| 175 | Crystal Energy Inc | Oklahoma City, OK 73116 | Oil & Gas Operator | Feb 2019 |
| 176 | Cuesta Petroleum Inc | Shawnee, OK 74801-6963 | Oil & Gas Operator | Apr 2025 |
| 177 | Cumberland Operating Company | Seminole, OK 74868-1258 | Oil & Gas Operator | Mar 2007 |
| 178 | Cummins Wren Oil Company | Tulsa, OK 74135 | Oil & Gas Operator | Nov 1998 |
| 179 | CWB Energy Inc | Oklahoma City, OK 73139-8837 | Oil Operator | May 2000 |
| 180 | D & G Oil & Gas Company Inc | Enid, OK 73702-2027 | Oil & Gas Operator | Nov 2021 |
| 181 | D & J Oil Company | Kermit, TX 79745 | Oil & Gas Operator | Jul 2025 |
| 182 | D-Mil Production Inc | Argyle, TX 76226 | Oil & Gas Operator | Jul 2025 |
| 183 | D.J.F. Services, Inc. | Holdenville, OK 74848 | Oil & Gas Operator | Jul 2025 |
| 184 | Darrell'S Drilling Inc | Konawa, OK 74849 | Oil Operator | Apr 2025 |
| 185 | Davco Productions Inc | Springer, OK 73458-8191 | Oil & Gas Operator | Jun 2021 |
| 186 | David Ridley Oil LLC | Tecumseh, OK 74873 | Oil Operator | Apr 2025 |
| 187 | Davis Bros. Oil Producers, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2020 |
| 188 | Davis Henry | Tulsa, OK 74135-3567 | Oil & Gas Operator | Dec 1994 |
| 189 | Daxin Energy Corporation | Seminole, OK 74868-2208 | Oil Operator | Jan 2013 |
| 190 | Deaton, Gary L. Corporation | Oklahoma City, OK 73105 | Oil & Gas Operator | Mar 2015 |
| 191 | Deck Oil Company | Tulsa, OK 74101 | Oil & Gas Operator | Jun 2020 |
| 192 | Dehart Company (The) | Ardmore, OK 73402 | Oil & Gas Operator | May 2025 |
| 193 | Dell Charles E | Cleveland, OK 74020-0090 | Oil & Gas Operator | Feb 2015 |
| 194 | Delta D Operations | Wilson, OK 73463 | Oil & Gas Operator | Jul 2014 |
| 195 | Delta D Operations Inc | Ardmore, OK 73401-8678 | Oil & Gas Operator | Apr 2014 |
| 196 | Dempsey, Wayne L | | Oil & Gas Operator | Mar 2011 |
| 197 | Derae Oil Company | Seminole, OK 74868-2617 | Oil & Gas Operator | Feb 1997 |
| 198 | Deshields Oil & Gas Inc | Okemah, OK 74859-9612 | Oil & Gas Operator | Sep 2014 |
| 199 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 200 | Dexxon, Inc. | Kiefer, OK 74041 | Oil & Gas Operator | Apr 2025 |