| 26801 | Seeco | | Gas Operator | Mar 2016 |
| 26802 | Seeco, Inc. | | Gas Operator | Mar 2015 |
| 26803 | Seed Group/Aa Drilling | | Oil Operator | Oct 2009 |
| 26804 | Seedy Draw LLC | Greenwood VIllage, CO 80111 | Oil Operator | Mar 2025 |
| 26805 | Seek Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 26806 | Seeker Oil Company II, Inc. | San Antonio, TX 78209 | Oil Operator | Jan 2016 |
| 26807 | Seeker Oil Company, Incorporated | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2025 |
| 26808 | Seeker, LLC | Newkirk, OK 74647 | Oil & Gas Operator | Nov 2019 |
| 26809 | Seel-Mac Oil & Gas LLC | Richardson, TX 75080 | Oil Operator | Jul 2011 |
| 26810 | Seeley Oil Company, LLC | Cortez, CO 81321 | Oil & Gas Operator | Feb 2025 |
| 26811 | Seelig Oil Corpo | | Oil Operator | Apr 1985 |
| 26812 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 26813 | Seelye, William L. | Plano, TX 75024 | Oil & Gas Operator | Oct 2005 |
| 26814 | Seer Operating LLC | Sheridan, WY 82801 | Oil & Gas Operator | Oct 2016 |
| 26815 | Seewald, Hughes | Amarillo, TX 79105 | Gas Operator | Jan 1997 |
| 26816 | Segars Operating | | Gas Operator | Apr 2014 |
| 26817 | Segco Oil & Gas Inc | Odessa, TX 79765 | Gas Operator | Oct 2005 |
| 26818 | Segler, Charles | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 26819 | Segrest-Ward Joint Venture | Longview, TX 75606 | Oil & Gas Operator | Jun 2001 |
| 26820 | Seguin Pump | Seguin, TX 78155 | Oil & Gas Operator | Sep 2017 |
| 26821 | Seguro Oil & Gas Inc | | Oil Operator | Jul 1992 |
| 26822 | Seguro Oil And Gas, LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2024 |
| 26823 | Seguro Well Service, Inc. | Gonzales, TX 78629 | Oil & Gas Operator | Apr 2025 |
| 26824 | Sei Operating, LLC | Mandeville, LA 70471 | Oil & Gas Operator | Apr 2025 |
| 26825 | Seibel Modern MFG. & Welding Corp. | Lancaster, NY 14086 | Gas Operator | Dec 2023 |
| 26826 | Seibert Darrel L/Chestnut | Cuyahoga Falls, OH 44224 | Oil & Gas Operator | Dec 1994 |
| 26827 | Seibert Oil & Gas | Hudson, OH 44236-4430-4430 | Oil & Gas Operator | Dec 1999 |
| 26828 | Seibert Oil, LLC | Macksville, KS 67557 | Oil & Gas Operator | Sep 2023 |
| 26829 | Seidler Oil & Gas Operating, LLC | Alvarado, TX 76009 | Oil & Gas Operator | Apr 2025 |
| 26830 | Seifert Companies LTD | Bremen, OH 43107 | Oil & Gas Operator | Dec 2023 |
| 26831 | Seifert, Timothy M. | Caledonia, NY 14423 | Gas Operator | Dec 2023 |
| 26832 | Seiguf Oil Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |
| 26833 | Seiran E & P Company, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Apr 2025 |
| 26834 | Seisgen Exploration, Inc | Houston, TX 77024 | Gas Operator | Aug 2005 |
| 26835 | Seisma Drilling Corporation | Wichita Falls, TX 76301 | Oil Operator | Aug 2003 |
| 26836 | Seismic Investment Group, Inc. | Houston, TX 77055 | Oil & Gas Operator | Jun 2008 |
| 26837 | Seismic Leasing Service | Denver, CO 80216 | Oil & Gas Operator | Aug 2000 |
| 26838 | Seismotech Energy, Incorporated | Plano, TX 75075 | Oil & Gas Operator | Aug 2003 |
| 26839 | Seistech Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2007 |
| 26840 | Seitz Farms, Inc. | Phelps, NY 14532 | Gas Operator | Dec 2023 |
| 26841 | Seitz, Comegys & Seitz | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 1994 |
| 26842 | Seitz, J. R. & Adam | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2008 |
| 26843 | Seitz, J. R. & Adam, LTD. | Wichita Falls, TX 76307 | Oil Operator | Apr 2025 |
| 26844 | Sek Energy, LLC | Benedict, KS 66714 | Oil & Gas Operator | Dec 2024 |
| 26845 | Sek Oil Incorpor | | Oil Operator | Jun 1985 |
| 26846 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 26847 | Selco Oil And Gas Inc | Alamo, CA 94507 | Oil & Gas Operator | Jan 2025 |
| 26848 | Select Energy Investments Inc | Solon, OH 44139 | Oil & Gas Operator | Dec 2019 |
| 26849 | Select Exploration Group LLC | Eufaula, OK 74432 | Oil & Gas Operator | May 2024 |
| 26850 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 26851 | Self Brothers | Montague, TX 76251 | Oil & Gas Operator | Apr 2025 |
| 26852 | Self, Charles D. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2016 |
| 26853 | Self, Charles Lynn | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2025 |
| 26854 | Sell Drilling Company | Pawhuska, OK 74056 | Oil Operator | Feb 2011 |
| 26855 | Sell Oil Company | Pawhuska, OK 74056 | Oil Operator | Jan 2025 |
| 26856 | Sell Well Servicing Company Osage Only | | Oil & Gas Operator | Nov 2019 |
| 26857 | Sellers Donald J | Depew, OK 74028-2442 | Oil Operator | Jan 2013 |
| 26858 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 26859 | Sellers Lease Service, Inc. | Flatonia, TX 78941 | Oil & Gas Operator | Apr 2025 |
| 26860 | Sellers Mark A | Drumright, OK 74030 | Oil & Gas Operator | Mar 2020 |
| 26861 | Sellers O N | Henryetta, OK 74437 | Oil & Gas Operator | May 1997 |
| 26862 | Sellers&Fulton Oil LLC | Artesia, NM 88210 | Oil & Gas Operator | Jun 2021 |
| 26863 | Sellers' Lease Service | Flatonia, TX 78941 | Oil & Gas Operator | Jul 1994 |
| 26864 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 26865 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 26866 | Selous Energy, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2015 |
| 26867 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | Apr 2025 |
| 26868 | Semgas Gathering LLC | Tulsa, OK 74136 | Gas Operator | Jul 2009 |
| 26869 | Seminole Company (The) | | Oil Operator | Dec 1994 |
| 26870 | Seminole Oil & Gas Co Inc | Seminole, OK 74868 | Gas Operator | May 2004 |
| 26871 | Seminole Oil Productions LLC | Surprise, AZ 85387-2015 | Oil Operator | Apr 2020 |
| 26872 | Seminole Production Co. | Silsbee, TX 77656 | Oil & Gas Operator | Oct 2002 |
| 26873 | Seminole Senora Sand Unit #1, LLC | Rogers, AR 72758 | Gas Operator | Sep 2010 |
| 26874 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Jan 2025 |
| 26875 | Semo, Inc. | | Oil & Gas Operator | Feb 2002 |
| 26876 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 26877 | Senax Inc | Tulsa, OK 74105-2206 | Oil & Gas Operator | Jan 2025 |
| 26878 | Sendero Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Apr 2025 |
| 26879 | Sendero Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2025 |
| 26880 | Seneca Energy Corporation | Dover, OH 44622 | Oil & Gas Operator | Dec 2020 |
| 26881 | Seneca Exploration, LLC | Wichita Falls, TX 76308 | Oil Operator | Apr 2025 |
| 26882 | Seneca Mineral Co Inc | Erie, PA 16509-4250 | Gas Operator | Dec 2002 |
| 26883 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 26884 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Feb 2025 |
| 26885 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 26886 | Seneca Stone Corporation | Seneca Falls, NY 13148 | Gas Operator | Dec 2023 |
| 26887 | Seneca Western Minerals Corp. | | Oil & Gas Operator | Dec 2009 |
| 26888 | Seneca-Cashco | | Oil & Gas Operator | Sep 1986 |
| 26889 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 26890 | Senior Drilling & Expl Co Inc. | | Oil & Gas Operator | Apr 1993 |
| 26891 | Senior G&A Operating Co Inc | | Oil & Gas Operator | Nov 1991 |
| 26892 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 26893 | Senora Oil & Gas Co | | Gas Operator | Aug 2001 |
| 26894 | Senora Resources, Inc. | Dime Box, TX 77853 | Oil & Gas Operator | Apr 2025 |
| 26895 | Senske, Richard S. | Ashville, NY 14710 | Gas Operator | Dec 2023 |
| 26896 | Sensor Oil & Gas Inc | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 26897 | Sentinel Peak Resources California LLC | | Oil & Gas Operator | Dec 2024 |
| 26898 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 26899 | Sentinel Transportation LLC | Wilmington, DE 19810 | Oil & Gas Operator | Feb 2025 |
| 26900 | Sentry Exploration, Inc. | Houston, TX 77006 | Oil & Gas Operator | Apr 2025 |