| 26101 | Seewald, Hughes | Amarillo, TX 79105 | Gas Operator | Jan 1997 |
| 26102 | Segars Operating | | Gas Operator | Apr 2014 |
| 26103 | Segco Oil & Gas Inc | Odessa, TX 79765 | Gas Operator | Oct 2005 |
| 26104 | Segler, Charles | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 26105 | Segrest-Ward Joint Venture | Longview, TX 75606 | Oil & Gas Operator | Jun 2001 |
| 26106 | Seguin Pump | Seguin, TX 78155 | Oil & Gas Operator | Sep 2017 |
| 26107 | Seguro Oil & Gas Inc | | Oil Operator | Jul 1992 |
| 26108 | Seguro Oil And Gas, LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2024 |
| 26109 | Seguro Well Service, Inc. | Gonzales, TX 78629 | Oil & Gas Operator | Nov 2024 |
| 26110 | Sei Operating, LLC | Mandeville, LA 70471 | Oil & Gas Operator | Nov 2024 |
| 26111 | Seibel Modern MFG. & Welding Corp. | Lancaster, NY 14086 | Gas Operator | Dec 2023 |
| 26112 | Seibert Oil & Gas | Hudson, OH 44236-4430-4430 | Oil & Gas Operator | Dec 1999 |
| 26113 | Seibert Oil, LLC | Macksville, KS 67557 | Oil & Gas Operator | Sep 2023 |
| 26114 | Seidler Oil & Gas Operating, LLC | Alvarado, TX 76009 | Oil & Gas Operator | Nov 2024 |
| 26115 | Seifert, Timothy M. | Caledonia, NY 14423 | Gas Operator | Dec 2023 |
| 26116 | Seiguf Oil Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2024 |
| 26117 | Seiran E & P Company, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Nov 2024 |
| 26118 | Seisgen Exploration, Inc | Houston, TX 77024 | Gas Operator | Aug 2005 |
| 26119 | Seisma Drilling Corporation | Wichita Falls, TX 76301 | Oil Operator | Aug 2003 |
| 26120 | Seismic Investment Group, Inc. | Houston, TX 77055 | Oil & Gas Operator | Jun 2008 |
| 26121 | Seismic Leasing Service | Denver, CO 80216 | Oil & Gas Operator | Aug 2000 |
| 26122 | Seismotech Energy, Incorporated | Plano, TX 75075 | Oil & Gas Operator | Aug 2003 |
| 26123 | Seistech Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2007 |
| 26124 | Seitz Farms, Inc. | Phelps, NY 14532 | Gas Operator | Dec 2023 |
| 26125 | Seitz, Comegys & Seitz | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 1994 |
| 26126 | Seitz, J. R. & Adam | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2008 |
| 26127 | Seitz, J. R. & Adam, LTD. | Wichita Falls, TX 76307 | Oil Operator | Nov 2024 |
| 26128 | Sek Energy, LLC | Benedict, KS 66714 | Oil & Gas Operator | Jul 2024 |
| 26129 | Sek Oil Incorpor | | Oil Operator | Jun 1985 |
| 26130 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 26131 | Selco Oil And Gas Inc | Alamo, CA 94507 | Oil & Gas Operator | Sep 2024 |
| 26132 | Select Energy Investments Inc | Solon, OH 44139 | Oil & Gas Operator | Dec 2019 |
| 26133 | Select Exploration Group LLC | Eufaula, OK 74432 | Oil & Gas Operator | May 2024 |
| 26134 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 26135 | Self Brothers | Montague, TX 76251 | Oil & Gas Operator | Nov 2024 |
| 26136 | Self, Charles D. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2016 |
| 26137 | Self, Charles Lynn | Jacksboro, TX 76458 | Oil & Gas Operator | Nov 2024 |
| 26138 | Sell Drilling Company | Pawhuska, OK 74056 | Oil Operator | Feb 2011 |
| 26139 | Sell Oil Company | Pawhuska, OK 74056 | Oil Operator | Sep 2024 |
| 26140 | Sell Well Servicing Company Osage Only | | Oil & Gas Operator | Nov 2019 |
| 26141 | Sellers Donald J | Depew, OK 74028-2442 | Oil Operator | Jan 2013 |
| 26142 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Aug 2024 |
| 26143 | Sellers Lease Service, Inc. | Flatonia, TX 78941 | Oil & Gas Operator | Nov 2024 |
| 26144 | Sellers Mark A | Drumright, OK 74030 | Oil & Gas Operator | Mar 2020 |
| 26145 | Sellers O N | Henryetta, OK 74437 | Oil & Gas Operator | May 1997 |
| 26146 | Sellers&Fulton Oil LLC | Artesia, NM 88210 | Oil & Gas Operator | Jun 2021 |
| 26147 | Sellers' Lease Service | Flatonia, TX 78941 | Oil & Gas Operator | Jul 1994 |
| 26148 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 26149 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 26150 | Selous Energy, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2015 |
| 26151 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | Nov 2024 |
| 26152 | Semcrude LP | Oklahoma City, OK 73112-5449 | Oil & Gas Operator | Jul 2008 |
| 26153 | Seminole Company (The) | | Oil Operator | Dec 1994 |
| 26154 | Seminole Oil Productions LLC | Surprise, AZ 85387-2015 | Oil Operator | Apr 2020 |
| 26155 | Seminole Production Co. | Silsbee, TX 77656 | Oil & Gas Operator | Oct 2002 |
| 26156 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Aug 2024 |
| 26157 | Semo, Inc. | | Oil & Gas Operator | Feb 2002 |
| 26158 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 26159 | Senax Inc | Tulsa, OK 74105-2206 | Oil & Gas Operator | Sep 2024 |
| 26160 | Sendero Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Nov 2024 |
| 26161 | Seneca Energy Corporation | Dover, OH 44622 | Oil & Gas Operator | Dec 2020 |
| 26162 | Seneca Exploration, LLC | Wichita Falls, TX 76308 | Oil Operator | Nov 2024 |
| 26163 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 26164 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Sep 2024 |
| 26165 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 26166 | Seneca Stone Corporation | Seneca Falls, NY 13148 | Gas Operator | Dec 2023 |
| 26167 | Seneca Western Minerals Corp. | | Oil & Gas Operator | Dec 2009 |
| 26168 | Seneca-Cashco | | Oil & Gas Operator | Sep 1986 |
| 26169 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 26170 | Senior Drilling & Expl Co Inc. | | Oil & Gas Operator | Apr 1993 |
| 26171 | Senior G&A Operating Co Inc | | Oil & Gas Operator | Nov 1991 |
| 26172 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 26173 | Senora Resources, Inc. | Dime Box, TX 77853 | Oil & Gas Operator | Nov 2024 |
| 26174 | Senske, Richard S. | Ashville, NY 14710 | Gas Operator | Dec 2023 |
| 26175 | Sensor Oil & Gas Inc | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 26176 | Sentinel Peak Resources California LLC | | Oil & Gas Operator | Nov 2024 |
| 26177 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 26178 | Sentinel Transportation LLC | Wilmington, DE 19810 | Oil & Gas Operator | Sep 2024 |
| 26179 | Sentry Exploration, Inc. | Houston, TX 77006 | Oil & Gas Operator | Nov 2024 |
| 26180 | Sep Cisco Dome II, LLC | Orem, UT 84097 | Oil & Gas Operator | Aug 2024 |
| 26181 | Sep Cisco Dome LLC | Orem, UT 84097 | Oil & Gas Operator | Mar 2015 |
| 26182 | Sep Nosr LLC | Orem, UT 84097 | Oil & Gas Operator | Aug 2024 |
| 26183 | Sep, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1994 |
| 26184 | September Corp | Titusville, PA 16354-6833 | Oil & Gas Operator | Dec 2023 |
| 26185 | Sepulvado Oilfield Service Inc | | Oil & Gas Operator | Jul 2010 |
| 26186 | Sequel Energy, LLC | | Oil & Gas Operator | May 2014 |
| 26187 | Sequent Exploration Inc | | Oil & Gas Operator | Oct 2017 |
| 26188 | Sequoia Energy Resources | Dallas, TX 75207 | Oil & Gas Operator | Nov 2024 |
| 26189 | Sequoia Exploration Inc. | | Oil & Gas Operator | Aug 2024 |
| 26190 | Sequoia Fossil Fuels, Inc. | Albany, TX 76430 | Oil & Gas Operator | Nov 2024 |
| 26191 | Sequoia Management, LLC | Houston, TX 77060 | Oil & Gas Operator | Nov 2009 |
| 26192 | Sequoia Natural Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Nov 2024 |
| 26193 | Sequoyah Energy Holdings LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2024 |
| 26194 | Ser E&P, Inc. | McKinney, TX 75069 | Oil & Gas Operator | Nov 2024 |
| 26195 | Serendipity Exploration, Inc. | Weatherford, TX 76087 | Gas Operator | May 1997 |
| 26196 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | Aug 2024 |
| 26197 | Serendipity Production Company LC | Guthrie, OK 73044 | Oil & Gas Operator | Apr 2020 |
| 26198 | Sergeant Gas Co Inc | Wilcox, PA 15870-1810 | Oil & Gas Operator | Dec 2023 |
| 26199 | Serio Energy Corporation | | Oil & Gas Operator | Jul 2000 |
| 26200 | Serio Exploration Company | | Oil Operator | Jan 1992 |