| 26801 | Southern Energy Operating, LLC | | Oil & Gas Operator | Oct 2025 |
| 26802 | Southern Exploration, Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Aug 2023 |
| 26803 | Southern G Holdings, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2007 |
| 26804 | Southern Gas Inc | | Gas Operator | Jan 1987 |
| 26805 | Southern Hills Gas Co. | | Oil Operator | Oct 2025 |
| 26806 | Southern Hydrocarbons Inc | | Oil & Gas Operator | Jul 1989 |
| 26807 | Southern Int'L Inc | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2007 |
| 26808 | Southern Management Inc | Camargo, OK 73835 | Oil Operator | Jun 1992 |
| 26809 | Southern Management Services | | Oil Operator | May 2017 |
| 26810 | Southern Mineral Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2001 |
| 26811 | Southern Natural Gas Co | Houston, TX 77001 | Oil & Gas Operator | Dec 2011 |
| 26812 | Southern Natural Gas Company LLC | | Oil & Gas Operator | Nov 2024 |
| 26813 | Southern Oil & Gas Company | | Oil & Gas Operator | Mar 2011 |
| 26814 | Southern Oil & Gas LLC | Corpus Christ, TX 78401 | Oil & Gas Operator | Jun 2026 |
| 26815 | Southern Oil Of Louisiana LLC | Madisonville, LA 70447 | Oil & Gas Operator | Jun 2026 |
| 26816 | Southern Oklahoma Production | Wilson, OK 73463-6537 | Oil & Gas Operator | Mar 2026 |
| 26817 | Southern Operating Corporation | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2013 |
| 26818 | Southern Operating, Inc. | | Oil Operator | Dec 2000 |
| 26819 | Southern Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2026 |
| 26820 | Southern Petroleum Company | | Oil & Gas Operator | Jan 1994 |
| 26821 | Southern Production & Expl Co. | | Oil & Gas Operator | Apr 2008 |
| 26822 | Southern Production Co Inc | Madill, OK 73446 | Oil & Gas Operator | Jan 2026 |
| 26823 | Southern Production SVC., Inc. | | Oil Operator | Mar 1997 |
| 26824 | Southern Resource Company | Corpus Christ, TX 78404 | Oil & Gas Operator | Mar 2022 |
| 26825 | Southern Resources Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | Mar 2026 |
| 26826 | Southern Royalty Inc. | Corpus Christ, TX 78411 | Oil & Gas Operator | Feb 1997 |
| 26827 | Southern Solutions And Services LLC | | Oil Operator | Dec 2014 |
| 26828 | Southern Star Central Gas Pipeline Inc | Owensboro, KY 42301 | Oil & Gas Operator | Feb 2026 |
| 26829 | Southern Star Operating LLC | Provo, UT 84604-7714 | Oil & Gas Operator | Jun 2017 |
| 26830 | Southern Star Operating, Inc. | | Oil & Gas Operator | Jun 2010 |
| 26831 | Southern States | | Oil & Gas Operator | Jul 1988 |
| 26832 | Southern States Gas & Oil LTD | | Oil & Gas Operator | Jul 2004 |
| 26833 | Southern States Oil Production, LLC | | Oil & Gas Operator | Oct 2013 |
| 26834 | Southern States Petroleum Corp | | Oil Operator | Jan 1984 |
| 26835 | Southern Tejas Asset Group LLC | McAllen, TX 78501 | Oil & Gas Operator | Jun 2026 |
| 26836 | Southern Triangle Oil | | Oil & Gas Operator | Dec 2000 |
| 26837 | Southern Triangle Oil Co | MT Carmel, IL 62863 | Oil & Gas Operator | Dec 2024 |
| 26838 | Southern Union Exploration | | Oil Operator | Jan 1990 |
| 26839 | Southern Union Exploration Co. | Austin, TX 78701 | Oil & Gas Operator | Feb 2002 |
| 26840 | Southern Union Production Co. | | Oil Operator | Apr 1979 |
| 26841 | Southern Water Disposal, LLC | | Oil & Gas Operator | Jan 2025 |
| 26842 | Southern Wells, Inc. | | Oil Operator | Sep 2002 |
| 26843 | Southfourk Partners LLC | Blanchard, OK 73010-7209 | Oil Operator | Feb 2026 |
| 26844 | Southlake Exploration, Inc. | Southlake, TX 76092 | Oil & Gas Operator | Jun 2026 |
| 26845 | Southlake Operating LLC | Weatherford, TX 76086 | Oil & Gas Operator | Jun 2026 |
| 26846 | Southland Energy Corporation | Houston, TX 77060 | Oil & Gas Operator | Aug 2022 |
| 26847 | Southland Royalt | | Oil & Gas Operator | Nov 1993 |
| 26848 | Southland Royalty Co.-Midland | Midland, TX 79702 | Oil & Gas Operator | Mar 1996 |
| 26849 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 26850 | Southland Royalty Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2021 |
| 26851 | Southport Exploration Inc | Tulsa, OK 74103-4015 | Oil & Gas Operator | Nov 1998 |
| 26852 | Southridge Homes | | Oil & Gas Operator | Dec 1999 |
| 26853 | Southridge Operating Company | San Marcos, TX 78667 | Oil & Gas Operator | Jun 2026 |
| 26854 | Southstar Energy Corporation | Ardmore, OK 73401 | Gas Operator | Aug 1990 |
| 26855 | Southstar Oil And Gas Inc | Andover, KS 67002-0123 | Oil & Gas Operator | Jul 2020 |
| 26856 | Southstone Energy, LLC | Austin, TX 78735 | Oil Operator | Jun 2026 |
| 26857 | Southwell Russell C | Warren, PA 16365-3686 | Oil & Gas Operator | Dec 2022 |
| 26858 | Southwell William R | Warren, PA 16365-1259 | Oil & Gas Operator | Dec 2017 |
| 26859 | Southwest Energy Devel.,Inc. | Sugar Land, TX 77478 | Oil & Gas Operator | Jul 2007 |
| 26860 | Southwest Energy Development Inc | Bison, OK 73720 | Oil & Gas Operator | Feb 2026 |
| 26861 | Southwest Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 26862 | Southwest Exploration Company | Oklahoma City, OK 73132-2230 | Oil & Gas Operator | Jun 2017 |
| 26863 | Southwest Gas Producing Co Inc | | Oil & Gas Operator | Nov 1994 |
| 26864 | Southwest Gas St | | Oil & Gas Operator | Dec 1981 |
| 26865 | Southwest Gas Storage Company | | Gas Operator | Feb 2026 |
| 26866 | Southwest Gas Systems, Inc. | Spring, TX 77379 | Oil & Gas Operator | Jun 2026 |
| 26867 | Southwest Gathering Company | Alice, TX 78332 | Oil & Gas Operator | Jun 2026 |
| 26868 | Southwest General Dev., Inc. | | Oil & Gas Operator | Dec 2003 |
| 26869 | Southwest Land & Minerals, Inc. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Aug 2003 |
| 26870 | Southwest Loop 1604, LTD. | San Antonio, TX 78209 | Oil Operator | Sep 2022 |
| 26871 | Southwest Mississippi Oil & Gas LLC. | | Oil Operator | Dec 2025 |
| 26872 | Southwest Oil & Land, Inc. | Corpus Chrsti, TX 78460 | Oil & Gas Operator | Dec 1999 |
| 26873 | Southwest Oil Properties, Inc. | | Oil & Gas Operator | Feb 1996 |
| 26874 | Southwest Operating Company | Overland Park, KS 66212 | Oil & Gas Operator | Mar 2012 |
| 26875 | Southwest Operating Inc. | | Oil & Gas Operator | Dec 2024 |
| 26876 | Southwest Operating, Inc.-Tyler | Tyler, TX 75701 | Oil & Gas Operator | Jun 2026 |
| 26877 | Southwest Petroleum | San Antonio, TX 78253 | Oil & Gas Operator | Jun 2026 |
| 26878 | Southwest Petroleum Corp | Drumright, OK 74030 | Oil & Gas Operator | Mar 2018 |
| 26879 | Southwest Petroleum Oil & Gas Explor LLC | San Bernardino, CA 92404-1010 | Oil & Gas Operator | Jun 2022 |
| 26880 | Southwest Resources, Inc. | Brenham, TX 77834 | Oil & Gas Operator | Jun 2026 |
| 26881 | Southwest Rig Service | | Oil & Gas Operator | Nov 1998 |
| 26882 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jun 2026 |
| 26883 | Southwest-Operating | Penwell, TX 79776 | Oil & Gas Operator | Jun 2026 |
| 26884 | Southwestern Electric Power Co | Dallas, TX 75266 | Oil & Gas Operator | Dec 1989 |
| 26885 | Southwestern Energy Prod Co | Houston, TX 77032 | Oil & Gas Operator | Jun 2015 |
| 26886 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Feb 2026 |
| 26887 | Southwestern Inc | Hobbs, NM 88240 | Oil Operator | Oct 2009 |
| 26888 | Southwestern Oil Corporation | Oklahoma City, OK 73106 | Oil & Gas Operator | Mar 2026 |
| 26889 | Southwestern Production Corporation | Lakewood, CO 80228 | Oil & Gas Operator | Apr 2026 |
| 26890 | Southwind Consulting | Pratt, KS 67124 | Oil Operator | Oct 1997 |
| 26891 | Southwind Exploration, LLC | Venice, FL 34293 | Oil & Gas Operator | Sep 2003 |
| 26892 | Southwind Oil & Gas LLC | | Oil & Gas Operator | Dec 2023 |
| 26893 | Southwind Petroleum Corp. | Wichita, KS 67203 | Oil & Gas Operator | Jun 2022 |
| 26894 | Sovereign Eagle, LLC | Roswell, NM 88202 | Oil & Gas Operator | Jul 2018 |
| 26895 | Sovereign Energy Corp. | | Oil Operator | Dec 2001 |
| 26896 | Sovereign Operating Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2016 |
| 26897 | Sovereign Petroleum Company, LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jul 2013 |
| 26898 | Sowers William & Sara | Blue Rock, OH 43720 | Oil Operator | Dec 2022 |
| 26899 | Sowle Exploratio | | Oil Operator | Aug 1986 |
| 26900 | Sowle Explorations | | Oil Operator | Dec 2002 |