| 26001 | Selco Oil And Gas Inc | Alamo, CA 94507 | Oil & Gas Operator | May 2026 |
| 26002 | Select Energy Investments Inc | Solon, OH 44139 | Oil & Gas Operator | Dec 2019 |
| 26003 | Select Exploration Group LLC | Eufaula, OK 74432 | Oil & Gas Operator | May 2024 |
| 26004 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 26005 | Select Water Solutions, LLC | Gainesville, TX 76240 | Oil Operator | Apr 2026 |
| 26006 | Self Brothers | Montague, TX 76251 | Oil & Gas Operator | Jul 2026 |
| 26007 | Self, Charles D. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2016 |
| 26008 | Self, Charles Lynn | Jacksboro, TX 76458 | Oil & Gas Operator | Jul 2026 |
| 26009 | Sell Drilling LLC | | Oil Operator | Feb 2011 |
| 26010 | Sell Well Servicing Company Osage Only | | Oil & Gas Operator | Nov 2019 |
| 26011 | Sell, David E | | Oil Operator | Apr 2026 |
| 26012 | Sellers Donald J | Depew, OK 74028-2442 | Oil Operator | Jan 2013 |
| 26013 | Sellers Jack B Estate Of | Cleveland, OK 74020 | Oil & Gas Operator | Apr 2026 |
| 26014 | Sellers Lease Service, Inc. | Flatonia, TX 78941 | Oil & Gas Operator | Jul 2026 |
| 26015 | Sellers Mark A | Drumright, OK 74030 | Oil & Gas Operator | Mar 2020 |
| 26016 | Sellers O N | Henryetta, OK 74437 | Oil & Gas Operator | May 1997 |
| 26017 | Sellers&Fulton Oil LLC | Artesia, NM 88210 | Oil & Gas Operator | Jun 2021 |
| 26018 | Sellers' Lease Service | Flatonia, TX 78941 | Oil & Gas Operator | Jul 1994 |
| 26019 | Sellmeyer Eugene | Collinsville, OK 74021 | Oil & Gas Operator | Mar 2015 |
| 26020 | Sellmeyer Frank | San Rafael, CA 94901-1339 | Oil Operator | Dec 2014 |
| 26021 | Selous Energy, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2015 |
| 26022 | Sem Operating Company LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2026 |
| 26023 | Seminole Company (The) | | Oil Operator | Dec 1994 |
| 26024 | Seminole Oil Productions LLC | Surprise, AZ 85387-2015 | Oil Operator | Apr 2020 |
| 26025 | Seminole Production Co. | Silsbee, TX 77656 | Oil & Gas Operator | Oct 2002 |
| 26026 | Seminole Tank Service | Seminole, OK 74818-1587 | Oil & Gas Operator | Apr 2026 |
| 26027 | Semo, Inc. | | Oil & Gas Operator | Feb 2002 |
| 26028 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 26029 | Senax Inc | Tulsa, OK 74105-2206 | Oil & Gas Operator | Apr 2026 |
| 26030 | Sendero Energy Inc. | Dallas, TX 75205 | Oil & Gas Operator | Jul 2026 |
| 26031 | Sendero Resources LLC | Denver, CO 80202 | Oil & Gas Operator | May 2026 |
| 26032 | Seneca Energy Corporation | Dover, OH 44622 | Oil & Gas Operator | Dec 2020 |
| 26033 | Seneca Exploration, LLC | Wichita Falls, TX 76308 | Oil Operator | Jul 2026 |
| 26034 | Seneca Oil Company | Tulsa, OK 74121-1518 | Oil & Gas Operator | Jan 2015 |
| 26035 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Apr 2026 |
| 26036 | Seneca Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2017 |
| 26037 | Seneca Stone Corporation | Seneca Falls, NY 13148 | Gas Operator | Dec 2025 |
| 26038 | Seneca Western Minerals Corp. | | Oil & Gas Operator | Dec 2009 |
| 26039 | Seneca-Cashco | | Oil & Gas Operator | Sep 1986 |
| 26040 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 26041 | Senior Drilling & Expl Co Inc. | | Oil & Gas Operator | Apr 1993 |
| 26042 | Senior G&A Operating Co Inc | | Oil & Gas Operator | Nov 1991 |
| 26043 | Senkel, Wesley, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2007 |
| 26044 | Senora Resources, Inc. | Dime Box, TX 77853 | Oil & Gas Operator | Jul 2026 |
| 26045 | Senske, Richard S. | Ashville, NY 14710 | Gas Operator | Dec 2025 |
| 26046 | Sensor Oil & Gas, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 26047 | Sentinel Peak Resources California LLC | | Oil & Gas Operator | May 2026 |
| 26048 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 |
| 26049 | Sentry Exploration, Inc. | Houston, TX 77006 | Oil & Gas Operator | Jul 2026 |
| 26050 | Sep Cisco Dome II, LLC | Orem, UT 84097 | Oil & Gas Operator | Apr 2026 |
| 26051 | Sep Cisco Dome LLC | Orem, UT 84097 | Oil & Gas Operator | Mar 2015 |
| 26052 | Sep Legacy LLC | Houston, TX 77024 | Oil & Gas Operator | May 2026 |
| 26053 | Sep Nosr LLC | Orem, UT 84097 | Oil & Gas Operator | Apr 2026 |
| 26054 | Sep, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1994 |
| 26055 | September Corp | Titusville, PA 16354-6833 | Oil & Gas Operator | Dec 2025 |
| 26056 | Sepulvado Oilfield Service Inc | | Oil & Gas Operator | Jul 2010 |
| 26057 | Sequel Energy, LLC | | Oil & Gas Operator | May 2014 |
| 26058 | Sequoia Energy Resources | Dallas, TX 75207 | Oil & Gas Operator | Jul 2026 |
| 26059 | Sequoia Exploration Inc. | | Oil & Gas Operator | Feb 2026 |
| 26060 | Sequoia Fossil Fuels, Inc. | Albany, TX 76430 | Oil & Gas Operator | Jul 2026 |
| 26061 | Sequoia Management, LLC | Houston, TX 77060 | Oil & Gas Operator | Nov 2009 |
| 26062 | Sequoia Natural Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Jul 2026 |
| 26063 | Sequoyah Energy Holdings LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | May 2026 |
| 26064 | Ser E&P, Inc. | McKinney, TX 75069 | Oil & Gas Operator | Jul 2026 |
| 26065 | Serco Operating LLC | Katy, TX 77450 | Oil Operator | Jul 2026 |
| 26066 | Serendipity Exploration, Inc. | Weatherford, TX 76087 | Gas Operator | May 1997 |
| 26067 | Serendipity Operating LLC | Sparks, NV 89436-9328 | Oil & Gas Operator | Apr 2026 |
| 26068 | Serendipity Production Company LC | Guthrie, OK 73044 | Oil & Gas Operator | Apr 2020 |
| 26069 | Sergeant Gas Co Inc | Wilcox, PA 15870-1810 | Oil & Gas Operator | Dec 2024 |
| 26070 | Serio Energy Corp. | | Oil & Gas Operator | Jul 2000 |
| 26071 | Serio Exploration Company | | Oil Operator | Jan 1992 |
| 26072 | Serio Oil Corp. | | Oil & Gas Operator | Sep 1991 |
| 26073 | Serio Operating Co. | | Oil & Gas Operator | Mar 2007 |
| 26074 | Serio-Punches Oil Co | | Oil Operator | Jan 2008 |
| 26075 | Serna Inc. | Austin, TX 78733 | Oil Operator | Jul 2026 |
| 26076 | Serra Energy, Inc. | Hailey, ID 83333 | Oil & Gas Operator | May 2011 |
| 26077 | Servco Productio | | Oil Operator | Dec 1992 |
| 26078 | Service Clearing Corp | Dallas, TX 75229 | Oil & Gas Operator | Jul 2026 |
| 26079 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 26080 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 26081 | Service Production Company, Inc. | Santa Fe, TX 77510 | Oil & Gas Operator | May 1999 |
| 26082 | Ses Oil | | Oil Operator | Jun 2004 |
| 26083 | Ses Production | | Oil & Gas Operator | Oct 2023 |
| 26084 | Sescil, Douglas W. | Akron, NY 14001 | Gas Operator | Dec 2025 |
| 26085 | Sessions Billy C | Muskogee, OK 74401-5323 | Oil Operator | Apr 2007 |
| 26086 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 26087 | Setex Oil Company, L.P. | Houston, TX 77060 | Oil & Gas Operator | Jan 2000 |
| 26088 | Settco Oil & Gas | | Oil & Gas Operator | May 1994 |
| 26089 | Settlers Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 26090 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 26091 | Sev Texas Operating, LLC | Long Beach, CA 90755 | Oil & Gas Operator | Jul 2026 |
| 26092 | Sevarg Company, Inc. | | Oil & Gas Operator | Feb 2016 |
| 26093 | Seven Cross Operating, LLC | Santa Anna, TX 76878 | Oil & Gas Operator | Jul 2026 |
| 26094 | Seven F Operating Inc. | New Braunfels, TX 78131 | Gas Operator | Jul 2026 |
| 26095 | Seven Falls Company | Dallas, TX 75201 | Oil & Gas Operator | May 2008 |
| 26096 | Seven Horses LLC | Alva, OK 73717-5004 | Oil & Gas Operator | May 2026 |
| 26097 | Seven J Oil Inc | Jenning, OK 74038-9729 | Oil & Gas Operator | Feb 2026 |
| 26098 | Seven Lakes Operating LLC | Austin, TX 78746 | Oil Operator | Jul 2026 |
| 26099 | Seven Loaves Energy LLC | Conroe, TX 77304 | Oil & Gas Operator | Jul 2026 |
| 26100 | Seven Sisters Oil & Gas LLC | Casper, WY 82602 | Oil & Gas Operator | Jan 2022 |