| 101 | Alford Oil Corporation | Spring, TX 77379 | Oil & Gas Operator | May 2006 |
| 102 | Alford Paul | Ada, OK 74820 | Oil Operator | Jan 2020 |
| 103 | All Exploration LLC | Oklahoma City, OK 73120-7829 | Oil & Gas Operator | Jan 2025 |
| 104 | Allen & Allen Oil Co | Barnsdale, OK 74002 | Oil Operator | Dec 2024 |
| 105 | Allen Benne | Ramona, OK 74061-3612 | Oil Operator | Aug 2010 |
| 106 | Allen Delmar | Okemah, OK 74859-9801 | Oil & Gas Operator | Dec 2000 |
| 107 | Allen J W Revocable Trust | Tulsa, OK 74101-0411 | Oil Operator | Nov 1998 |
| 108 | Allen Kent | Okemah, OK 74859-9700 | Oil Operator | Jan 2025 |
| 109 | Allen Michael | Broken Arrow, OK 74014-2239 | Oil & Gas Operator | Nov 2024 |
| 110 | Allen Oil & Gas LLC | Ardmore, OK 73401 | Oil Operator | Aug 2022 |
| 111 | Allen Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jun 2016 |
| 112 | Allen Richard R | Bartlesville, OK 74005 | Oil Operator | Aug 1999 |
| 113 | Allen Wade | Okmulgee, OK 74447-9717 | Oil & Gas Operator | Dec 2021 |
| 114 | Allenergy Operating Co Inc | Coffeyville, KS 67337-6653 | Oil & Gas Operator | Mar 2015 |
| 115 | Alliance Oil & Gas Co., Inc. | Corinth, TX 76205 | Oil & Gas Operator | Mar 2015 |
| 116 | Alliance Resources Corporation | Dallas, TX 75367 | Oil & Gas Operator | Apr 2025 |
| 117 | Allied Operating LLC | Bowling Green, KY 42101-3980 | Oil & Gas Operator | Sep 2015 |
| 118 | Allied Petroleum Company | | Gas Operator | Dec 1992 |
| 119 | Allied Petroleum Inc. | Oklahoma City, OK 73116-1516 | Oil & Gas Operator | Jun 2014 |
| 120 | Alligator Rock Well Service LLC | Loco, OK 73442 | Oil & Gas Operator | Feb 2025 |
| 121 | Allison Energy Holdings LLC | Nichols Hills, OK 73116-5113 | Oil Operator | Jan 2025 |
| 122 | Allison Tom & Shelly Dba T & S Oil Company | Bartlesville, OK 74006-0722 | Oil & Gas Operator | Aug 2024 |
| 123 | Almac Engineering | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2007 |
| 124 | Almack John And Glenda | Perry, OK 73077-8819 | Oil & Gas Operator | Apr 2016 |
| 125 | Almont Energy LLC | Kingfisher, OK 73750-0901 | Oil & Gas Operator | Oct 2021 |
| 126 | Alpar Resources, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jul 2011 |
| 127 | Alpha Drilling Inc | | Oil & Gas Operator | May 2014 |
| 128 | Alpha Energy Operating LLC | Dallas, TX 75254 | Oil & Gas Operator | Feb 2012 |
| 129 | Alpha Energy Texas Operating LLC | Golden, CO 80401-3275 | Oil & Gas Operator | Jan 2025 |
| 130 | Alpha Oil Company | | Oil Operator | Jul 2004 |
| 131 | Alpha Petro Development Inc | Tulsa, OK 74136-7048 | Oil & Gas Operator | May 2013 |
| 132 | Alpine Inc | Oklahoma City, OK 73134-2504 | Oil & Gas Operator | Feb 2024 |
| 133 | Alpine Oil & Gas Inc | Edmond, OK 73083-1264 | Oil & Gas Operator | Mar 2008 |
| 134 | Alsup 1-19 LLC | Lindsay, OK 73052 | Oil Operator | Feb 2025 |
| 135 | Alta Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Apr 1995 |
| 136 | Altex Energy Corporation | Oklahoma City, OK 73142-1920 | Oil & Gas Operator | Mar 2015 |
| 137 | Altex Oil Corp | Breckenridge, CO 80424-1057 | Oil & Gas Operator | Dec 1999 |
| 138 | Altex Resources, Inc. | Carney, OK 74832 | Oil & Gas Operator | Mar 2015 |
| 139 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Apr 2025 |
| 140 | Alvarado 2014 LLC | Houston, TX 77027 | Oil & Gas Operator | Apr 2025 |
| 141 | Amarillo Exploration, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Apr 2025 |
| 142 | Amax Oil & Gas Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Nov 2014 |
| 143 | Amax Petroleum Corporation | Houston, TX 77042 | Oil & Gas Operator | Dec 2012 |
| 144 | Ambrit Energy Corporation | Garland, TX 75044 | Oil & Gas Operator | Jun 2003 |
| 145 | Amcole Energy Corporation | Dallas, TX 75231 | Oil & Gas Operator | Aug 2000 |
| 146 | Amcova Energy LLC | Edmond, OK 73034 | Oil & Gas Operator | Jan 2025 |
| 147 | Amer-Tex Energy Inc | Oklahoma City, OK 73116-9037 | Oil & Gas Operator | Feb 2012 |
| 148 | Amerac Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jun 2013 |
| 149 | Amerex Corporation | Edmond, OK 73013-1044 | Oil & Gas Operator | Apr 2020 |
| 150 | American Capital Corporation | San Marcos, CA 92069 | Oil & Gas Operator | Sep 2014 |
| 151 | American Cometra, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2008 |
| 152 | American Crude Corp | Madill, OK 73446 | Oil Operator | Dec 1992 |
| 153 | American Domestic MGMT Inc | Tulsa, OK 74155 | Oil & Gas Operator | Apr 2015 |
| 154 | American Eagle Operating LLC | Gainesville, TX 76240 | Oil Operator | Apr 2025 |
| 155 | American Energy LLC | Lake Zurich, IL 60047-0129 | Oil & Gas Operator | Nov 2014 |
| 156 | American Energy Operations Inc | Houston, TX 77002 | Oil & Gas Operator | Nov 1992 |
| 157 | American Energy Recovery Inc | Oklahoma City, OK 73123-0549 | Oil & Gas Operator | Aug 2017 |
| 158 | American Int'L Energy Corp. | Houston, TX 77057 | Oil & Gas Operator | Aug 2019 |
| 159 | American Natural Energy Corp | Oklahoma City, OK 73114 | Oil & Gas Operator | Jan 2025 |
| 160 | American Natural Resources LLC | Tulsa, OK 74145-1117 | Oil & Gas Operator | May 2020 |
| 161 | American Petrofina Co Of TX | Dallas, TX 75221-2159 | Oil & Gas Operator | Nov 2000 |
| 162 | American Petroleum & Environmental Consultants Inc | Edmond, OK 73013-8801 | Oil & Gas Operator | Jan 2025 |
| 163 | American Petroleum & Mineral Co Inc | Seminole, OK 74868 | Oil & Gas Operator | Aug 2019 |
| 164 | American Petroleum Corp | Addison, TX 75001 | Oil & Gas Operator | Apr 2025 |
| 165 | American Quasar Petroleum Co. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2014 |
| 166 | American Star Energy & Mineral Corp | Amarillo, TX 79102-2283 | Oil & Gas Operator | Jun 2015 |
| 167 | American Trading & Prod Corp | Houston, TX 77040-6471 | Oil & Gas Operator | Nov 2014 |
| 168 | American Warrior Inc | Garden City, KS 67846 | Oil & Gas Operator | Jan 2025 |
| 169 | Americana Energy Inc | Byng, OK 74820 | Oil & Gas Operator | Jan 2025 |
| 170 | Americana Petroleum Corp | Waco, TX 76710 | Oil Operator | Aug 1992 |
| 171 | Americo Oil Company | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2012 |
| 172 | Ameritech Oil & Gas Corporation | Dallas, TX 75248 | Oil & Gas Operator | May 1996 |
| 173 | Amerril Energy LLC | Houston, TX 77042 | Oil & Gas Operator | Apr 2025 |
| 174 | Amerroyal Energy LLC | Shawnee, OK 74804-4163 | Oil & Gas Operator | Dec 2022 |
| 175 | Ames Financial, Inc | Shreveport, LA 71101 | Oil & Gas Operator | Aug 2024 |
| 176 | Ames Oil Corporation Of Texas | Austin, TX 78720 | Oil & Gas Operator | Mar 2015 |
| 177 | Amoco Energy Trading Corp | Chicago, IL 60601 | Oil & Gas Operator | Apr 2021 |
| 178 | Amplify Oklahoma Operating LLC | Houston, TX 77002-4800 | Oil & Gas Operator | Jan 2025 |
| 179 | Amsito Oil Company LLC | Denton, TX 76206-0689 | Oil Operator | Apr 2001 |
| 180 | Amsito Production Company LLC | | Oil & Gas Operator | Jul 2005 |
| 181 | Amsler Jerry & Denese | Enid, OK 73703-9300 | Oil & Gas Operator | Jul 2020 |
| 182 | Amvest Osage Inc | Skiatook, OK 74070-0970 | Oil & Gas Operator | Jan 2025 |
| 183 | An-Son Corporation | Oklahoma City, OK 73124 | Oil & Gas Operator | Jan 2006 |
| 184 | An-Son Transporation | Oklahoma City, OK 73136 | Oil & Gas Operator | Nov 2006 |
| 185 | Anabaco Operating Company | Stillwater, OK 74076-1958 | Oil & Gas Operator | Mar 2014 |
| 186 | Anadarko Basin Oil& Gas Lease Inc | Sayre, OK 73662 | Oil & Gas Operator | Jan 1997 |
| 187 | Anadarko Disposal | El Reno, OK 73036 | Oil & Gas Operator | Jun 2014 |
| 188 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Apr 2025 |
| 189 | Anadarko Gathering Co. | Houston, TX 77251 | Oil & Gas Operator | Jul 2001 |
| 190 | Anadarko Minerals Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2025 |
| 191 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Feb 2025 |
| 192 | Analena Corporation | Dallas, TX 75251 | Oil Operator | Jun 2000 |
| 193 | Ananda Energy Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jan 2021 |
| 194 | Anc Investments LLC | Enid, OK 73701-1823 | Gas Operator | Jan 2025 |
| 195 | Anchorage Oil & Gas Inc | Oklahoma City, OK 73128-1422 | Oil & Gas Operator | Oct 1999 |
| 196 | Anco Account | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 1995 |
| 197 | Ancova Energy Marketing LLC | Oklahoma City, OK 73103 | Oil & Gas Operator | Jan 2025 |
| 198 | Andco Mud Inc | Edmond, OK 73034-3910 | Oil & Gas Operator | Mar 2006 |
| 199 | Anderson Floyd Melton Revocable Trust | Yukon, OK 73099 | Oil & Gas Operator | Oct 2024 |
| 200 | Anderson Jerry W | Bartlesville, OK 74006-0178 | Oil Operator | Dec 2022 |