| 26501 | Seidler Oil & Gas Operating, LLC | Alvarado, TX 76009 | Oil & Gas Operator | May 2025 |
| 26502 | Seifert Companies LTD | Bremen, OH 43107 | Oil & Gas Operator | Dec 2023 |
| 26503 | Seifert, Timothy M. | Caledonia, NY 14423 | Gas Operator | Dec 2023 |
| 26504 | Seiguf Oil Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | May 2025 |
| 26505 | Seiran E & P Company, LLC | Friendswood, TX 77546 | Oil & Gas Operator | May 2025 |
| 26506 | Seisgen Exploration, Inc | Houston, TX 77024 | Gas Operator | Aug 2005 |
| 26507 | Seisma Drilling Corporation | Wichita Falls, TX 76301 | Oil Operator | Aug 2003 |
| 26508 | Seismic Investment Group, Inc. | Houston, TX 77055 | Oil & Gas Operator | Jun 2008 |
| 26509 | Seismic Leasing Service | Denver, CO 80216 | Oil & Gas Operator | Aug 2000 |
| 26510 | Seismotech Energy, Incorporated | Plano, TX 75075 | Oil & Gas Operator | Aug 2003 |
| 26511 | Seistech Development, Inc. | Midland, TX 79701 | Oil & Gas Operator | May 2007 |
| 26512 | Seitz Farms, Inc. | Phelps, NY 14532 | Gas Operator | Dec 2023 |
| 26513 | Seitz, Comegys & Seitz | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 1994 |
| 26514 | Seitz, J. R. & Adam | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2008 |
| 26515 | Seitz, J. R. & Adam, LTD. | Wichita Falls, TX 76307 | Oil Operator | May 2025 |
| 26516 | Sek Energy, LLC | Benedict, KS 66714 | Oil & Gas Operator | Jan 2025 |
| 26517 | Sek Oil Incorpor | | Oil Operator | Jun 1985 |
| 26518 | Selby Larry Monroe | Bartlesville, OK 74006 | Oil & Gas Operator | Apr 2020 |
| 26519 | Selco Oil And Gas Inc | Alamo, CA 94507 | Oil & Gas Operator | Feb 2025 |
| 26520 | Select Energy Investments Inc | Solon, OH 44139 | Oil & Gas Operator | Dec 2019 |
| 26521 | Select Exploration Group LLC | Eufaula, OK 74432 | Oil & Gas Operator | May 2024 |
| 26522 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 26523 | Self Brothers | Montague, TX 76251 | Oil & Gas Operator | May 2025 |
| 26524 | Self, Charles D. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2016 |
| 26525 | Self, Charles Lynn | Jacksboro, TX 76458 | Oil & Gas Operator | May 2025 |
| 26526 | Sell Drilling LLC | | Oil Operator | Feb 2011 |
| 26527 | Sell Well Servicing Company Osage Only | | Oil & Gas Operator | Nov 2019 |
| 26528 | Sell, David E | | Oil Operator | Feb 2025 |
| 26529 | Sellers Donald J | Depew, OK 74028-2442 | Oil Operator | Jan 2013 |
| 26530 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Feb 2025 |
| 26531 | Sellers Lease Service, Inc. | Flatonia, TX 78941 | Oil & Gas Operator | May 2025 |
| 26532 | Sellers Mark A | Drumright, OK 74030 | Oil & Gas Operator | Mar 2020 |
| 26533 | Sellers O N | Henryetta, OK 74437 | Oil & Gas Operator | May 1997 |
| 26534 | Sellers&Fulton Oil LLC | Artesia, NM 88210 | Oil & Gas Operator | Jun 2021 |
| 26535 | Sellers' Lease Service | Flatonia, TX 78941 | Oil & Gas Operator | Jul 1994 |
| 26536 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 26537 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 26538 | Selous Energy, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2015 |
| 26539 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 26540 | Semgas Gathering LLC | Tulsa, OK 74136 | Gas Operator | Jul 2009 |
| 26541 | Seminole Company (The) | | Oil Operator | Dec 1994 |
| 26542 | Seminole Oil & Gas Co Inc | Seminole, OK 74868 | Gas Operator | May 2004 |
| 26543 | Seminole Oil Productions LLC | Surprise, AZ 85387-2015 | Oil Operator | Apr 2020 |
| 26544 | Seminole Production Co. | Silsbee, TX 77656 | Oil & Gas Operator | Oct 2002 |
| 26545 | Seminole Senora Sand Unit #1, LLC | Rogers, AR 72758 | Gas Operator | Sep 2010 |
| 26546 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Feb 2025 |
| 26547 | Semo, Inc. | | Oil & Gas Operator | Feb 2002 |
| 26548 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 26549 | Senax Inc | Tulsa, OK 74105-2206 | Oil & Gas Operator | Feb 2025 |
| 26550 | Sendero Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | May 2025 |
| 26551 | Sendero Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 26552 | Seneca Energy Corporation | Dover, OH 44622 | Oil & Gas Operator | Dec 2020 |
| 26553 | Seneca Exploration, LLC | Wichita Falls, TX 76308 | Oil Operator | May 2025 |
| 26554 | Seneca Mineral Co Inc | Erie, PA 16509-4250 | Gas Operator | Dec 2002 |
| 26555 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 26556 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Mar 2025 |
| 26557 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 26558 | Seneca Stone Corporation | Seneca Falls, NY 13148 | Gas Operator | Dec 2023 |
| 26559 | Seneca Western Minerals Corp. | | Oil & Gas Operator | Dec 2009 |
| 26560 | Seneca-Cashco | | Oil & Gas Operator | Sep 1986 |
| 26561 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 26562 | Senior Drilling & Expl Co Inc. | | Oil & Gas Operator | Apr 1993 |
| 26563 | Senior G&A Operating Co Inc | | Oil & Gas Operator | Nov 1991 |
| 26564 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 26565 | Senora Resources, Inc. | Dime Box, TX 77853 | Oil & Gas Operator | May 2025 |
| 26566 | Senske, Richard S. | Ashville, NY 14710 | Gas Operator | Dec 2023 |
| 26567 | Sensor Oil & Gas Inc | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 26568 | Sentinel Peak Resources California LLC | | Oil & Gas Operator | Mar 2025 |
| 26569 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 26570 | Sentry Exploration, Inc. | Houston, TX 77006 | Oil & Gas Operator | May 2025 |
| 26571 | Sep Cisco Dome II, LLC | Orem, UT 84097 | Oil & Gas Operator | Mar 2025 |
| 26572 | Sep Cisco Dome LLC | Orem, UT 84097 | Oil & Gas Operator | Mar 2015 |
| 26573 | Sep Nosr LLC | Orem, UT 84097 | Oil & Gas Operator | Mar 2025 |
| 26574 | Sep, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1994 |
| 26575 | September Corp | Titusville, PA 16354-6833 | Oil & Gas Operator | Dec 2024 |
| 26576 | Sepulvado Oilfield Service Inc | | Oil & Gas Operator | Jul 2010 |
| 26577 | Sequel Energy, LLC | | Oil & Gas Operator | May 2014 |
| 26578 | Sequoia Energy Resources | Dallas, TX 75207 | Oil & Gas Operator | May 2025 |
| 26579 | Sequoia Exploration Inc. | | Oil & Gas Operator | Feb 2025 |
| 26580 | Sequoia Fossil Fuels, Inc. | Albany, TX 76430 | Oil & Gas Operator | May 2025 |
| 26581 | Sequoia Management, LLC | Houston, TX 77060 | Oil & Gas Operator | Nov 2009 |
| 26582 | Sequoia Natural Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | May 2025 |
| 26583 | Sequoia Oil & Gas, Inc. | Fort Worth, TX 76164 | Oil & Gas Operator | Jan 1993 |
| 26584 | Sequoyah Energy Holdings LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2025 |
| 26585 | Ser E&P, Inc. | McKinney, TX 75069 | Oil & Gas Operator | May 2025 |
| 26586 | Serco Operating LLC | Katy, TX 77450 | Oil Operator | May 2025 |
| 26587 | Serendipity Exploration, Inc. | Weatherford, TX 76087 | Gas Operator | May 1997 |
| 26588 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | Feb 2025 |
| 26589 | Serendipity Production Company LC | Guthrie, OK 73044 | Oil & Gas Operator | Apr 2020 |
| 26590 | Sergeant Gas Co Inc | Wilcox, PA 15870-1810 | Oil & Gas Operator | Dec 2024 |
| 26591 | Serio Energy Corporation | | Oil & Gas Operator | Jul 2000 |
| 26592 | Serio Exploration Company | | Oil Operator | Jan 1992 |
| 26593 | Serio Oil Corp. | | Oil & Gas Operator | Sep 1991 |
| 26594 | Serio Operating Company | | Oil & Gas Operator | Mar 2007 |
| 26595 | Serio-Punches Oil Co | | Oil Operator | Jan 2008 |
| 26596 | Serna Inc. | Austin, TX 78733 | Oil Operator | May 2025 |
| 26597 | Serra Energy, Inc. | Hailey, ID 83333 | Oil & Gas Operator | May 2011 |
| 26598 | Servco Productio | | Oil Operator | Dec 1992 |
| 26599 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | May 2025 |
| 26600 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |