| 27801 | Sound Energy Co Inc | Dover, OH 44622 | Oil & Gas Operator | Dec 2024 |
| 27802 | Sound Resources Corporation | | Oil & Gas Operator | Dec 2003 |
| 27803 | Sounion Petroleum Incorporated | Baltimore, MD 21218 | Oil & Gas Operator | Aug 1994 |
| 27804 | Source Energy Corp. | | Gas Operator | Aug 2022 |
| 27805 | Source Energy Midcon LLC | Highlands Ranch, CO 80129 | Oil Operator | Jul 2015 |
| 27806 | Source Petroleum | Wichita, KS 67202 | Oil & Gas Operator | Oct 1993 |
| 27807 | Source Petroleum Inc. | San Antonio, TX 78265 | Oil & Gas Operator | Apr 2025 |
| 27808 | Sourcegas Energy Services Co | Golden, CO 80401 | Gas Operator | Jun 2015 |
| 27809 | Sours Thomas J | Sharon Center, OH 44274 | Oil & Gas Operator | Dec 2022 |
| 27810 | South Bay Oil Corporation | Wichita, KS 67202 | Oil Operator | Dec 2019 |
| 27811 | South Bay Resources, L.L.C. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2025 |
| 27812 | South Burbank Petroleum Corporation | Midland, TX 79707-9027 | Oil Operator | Feb 2010 |
| 27813 | South Carlton Operating Company, LLC | Natchez, MS 39121 | Oil Operator | Jan 2025 |
| 27814 | South Central Oil And Gas | | Oil & Gas Operator | Feb 2014 |
| 27815 | South Central Petroleum, Inc. | | Oil & Gas Operator | Dec 1988 |
| 27816 | South Central Texas Oil & Gas Co | Houston, TX 77060 | Oil & Gas Operator | Apr 2025 |
| 27817 | South Coast Oil Corporation | Boulder, CO 80302 | Oil & Gas Operator | Oct 2015 |
| 27818 | South Coast Oil, Inc. | | Oil & Gas Operator | Jul 1989 |
| 27819 | South Florida Investment Company | Pampa, TX 79066 | Oil & Gas Operator | Jun 1997 |
| 27820 | South Fork Energy, LLC - (Ca) | | Oil Operator | Dec 2020 |
| 27821 | South Fork Ranch | | Oil & Gas Operator | Feb 2013 |
| 27822 | South Forty Energy, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Oct 1993 |
| 27823 | South Forty, The, Inc. | Laverne, OK 73848 | Oil & Gas Operator | Mar 2015 |
| 27824 | South Heart Company | | Oil Operator | Aug 2010 |
| 27825 | South Houston Production Company | Muenster, TX 76252 | Oil & Gas Operator | Apr 2025 |
| 27826 | South La. Production Co., Inc. | | Oil & Gas Operator | Jun 1982 |
| 27827 | South Leeville, LLC | Houston, TX 77069 | Oil & Gas Operator | Oct 2022 |
| 27828 | South Loop Operating, L.C. | San Antonio, TX 78279 | Oil & Gas Operator | Apr 2009 |
| 27829 | South Oak Production Company | | Oil & Gas Operator | Jun 2010 |
| 27830 | South Of Briles | | Oil Operator | Aug 1989 |
| 27831 | South Oil, Inc. | Houston, TX 77057 | Oil & Gas Operator | Nov 2018 |
| 27832 | South Pass Petroleum Inc | Casper, WY 82601 | Oil & Gas Operator | Feb 2025 |
| 27833 | South Ranch Corporation | Midland, TX 79707 | Oil Operator | Sep 2019 |
| 27834 | South Ranch Oil | | Gas Operator | Dec 1990 |
| 27835 | South Ranch Oil Company Inc | St. Louis, MO 63124 | Oil Operator | Sep 1996 |
| 27836 | South River Operating, LLC | | Oil & Gas Operator | Dec 2016 |
| 27837 | South Romeo Gas Storage Company LLC | | Gas Operator | Feb 1994 |
| 27838 | South Sam Operating Company, LLC | Lakehills, TX 78063 | Oil Operator | Apr 2025 |
| 27839 | South Sands Exploration LLC | Henryetta, OK 74437-4208 | Oil & Gas Operator | Jan 2025 |
| 27840 | South Shore Energy LLC | Geneva, OH 44041-0800-0800 | Oil & Gas Operator | Dec 2024 |
| 27841 | South Texas Drilling & Expl, Inc | San Antonio, TX 78217 | Oil & Gas Operator | Jan 1999 |
| 27842 | South Texas Energy Production | Devine, TX 78016 | Oil & Gas Operator | Dec 1996 |
| 27843 | South Texas Injection Company | Mineral, TX 78125 | Oil & Gas Operator | Dec 2016 |
| 27844 | South Texas Limited Partnership | Houston, TX 77060 | Oil & Gas Operator | Feb 1994 |
| 27845 | South Texas Operating Company | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 27846 | South Texas SWD, Inc. | Beeville, TX 78104 | Oil & Gas Operator | Aug 2003 |
| 27847 | South West Texas Oil & Gas, Inc. | Luling, TX 78648 | Oil & Gas Operator | Feb 2000 |
| 27848 | Southampton Mineral Corp. | | Oil & Gas Operator | Aug 2005 |
| 27849 | Southbound Gas Company | Dallas, TX 75201 | Gas Operator | Jan 2025 |
| 27850 | Southbrook Energies Inc | Tulsa, OK 74153 | Oil Operator | Feb 2004 |
| 27851 | Southco Oil And Gas Inc. | | Oil & Gas Operator | Nov 2000 |
| 27852 | Southcoast Production Inc | Houston, TX 77010 | Oil & Gas Operator | Apr 2025 |
| 27853 | Southcoast Resources, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2015 |
| 27854 | Southcreek Petroleum Co LLC | Blanchard, OK 73010-4911 | Oil & Gas Operator | Oct 2024 |
| 27855 | Southcross Operating LLC | Amarillo, TX 79114 | Oil & Gas Operator | Oct 2005 |
| 27856 | Southeastern Gas Company | | Oil & Gas Operator | Dec 2019 |
| 27857 | Southeastern Oil & Gas Corp | | Oil Operator | Dec 2023 |
| 27858 | Southeastern Petroleum Inc | Roswell, NM BAD ADDR | Oil & Gas Operator | Dec 1995 |
| 27859 | Southeastern Pipe Line Company | Tyler, TX 75711 | Oil & Gas Operator | Dec 2020 |
| 27860 | Southeastern Producing Co | | Oil Operator | Jul 1988 |
| 27861 | Southeastern Public Service Co | | Oil & Gas Operator | Sep 1982 |
| 27862 | Southeastern Resources Corp. | Mansfield, TX 76063 | Oil & Gas Operator | Feb 2004 |
| 27863 | Southerland Jackie Dale Dba Skyden Oil | Duncan, OK 73533-5392 | Oil & Gas Operator | Feb 2025 |
| 27864 | Southerland Joe Don Dba Taylor Oil Co | Duncan, OK 73533 | Oil & Gas Operator | Feb 2025 |
| 27865 | Southerland Marquieta Dba Keta Oil Company | Loco, OK 73442-1815 | Oil & Gas Operator | Feb 2025 |
| 27866 | Southerland, Glenn Oil & Gas Co. | Hallsville, TX 75650 | Oil & Gas Operator | Feb 2021 |
| 27867 | Southern Alliance Oil Corp. | Grapevine, TX 76099 | Oil & Gas Operator | Apr 2025 |
| 27868 | Southern Bay Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 27869 | Southern California Gas Company | | Oil & Gas Operator | Dec 2024 |
| 27870 | Southern Crude, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2017 |
| 27871 | Southern Energy Operating Co Inc | | Oil Operator | Dec 2024 |
| 27872 | Southern Energy Operating, LLC | | Oil & Gas Operator | Nov 2024 |
| 27873 | Southern Exploration, Inc. | Fort Worth, TX 76137 | Oil & Gas Operator | Aug 2023 |
| 27874 | Southern G Holdings, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2007 |
| 27875 | Southern Gas Inc | | Gas Operator | Jan 1987 |
| 27876 | Southern Hills Gas Co. | | Oil Operator | Oct 2024 |
| 27877 | Southern Hydrocarbons Inc | | Oil & Gas Operator | Jul 1989 |
| 27878 | Southern Int'L Inc | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2007 |
| 27879 | Southern Management Inc | Camargo, OK 73835 | Oil Operator | Jun 1992 |
| 27880 | Southern Management Services | | Oil Operator | May 2017 |
| 27881 | Southern Mineral Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2001 |
| 27882 | Southern Natural Gas Co | Houston, TX 77001 | Oil & Gas Operator | Dec 2011 |
| 27883 | Southern Natural Gas Company LLC | | Oil & Gas Operator | Nov 2024 |
| 27884 | Southern Oil & Gas Company | | Oil & Gas Operator | Mar 2011 |
| 27885 | Southern Oil & Gas LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2025 |
| 27886 | Southern Oil Of Louisiana LLC | Madisonville, LA 70447 | Oil & Gas Operator | Apr 2025 |
| 27887 | Southern Oklahoma Production | Wilson, OK 73463-6537 | Oil Operator | Jan 2025 |
| 27888 | Southern Operating Corporation | Broken Arrow, OK 74014 | Oil & Gas Operator | May 2013 |
| 27889 | Southern Operating, Inc. | | Oil Operator | Dec 2000 |
| 27890 | Southern Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 27891 | Southern Petroleum Company | | Oil & Gas Operator | Jan 1994 |
| 27892 | Southern Production & Expl Co. | | Oil & Gas Operator | Apr 2008 |
| 27893 | Southern Production Co | Healdton, OK 73438-0400 | Oil & Gas Operator | Dec 2024 |
| 27894 | Southern Production SVC., Inc. | | Oil Operator | Mar 1997 |
| 27895 | Southern Resource Company | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Mar 2022 |
| 27896 | Southern Resources Inc | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Jan 2025 |
| 27897 | Southern Royalty Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Feb 1997 |
| 27898 | Southern Solutions And Services LLC | | Oil Operator | Dec 2014 |
| 27899 | Southern Star Central Gas Pipeline, Inc. | Owensboro, KY 42301 | Oil & Gas Operator | Jan 2025 |
| 27900 | Southern Star Operating LLC | Provo, UT 84604-7714 | Oil & Gas Operator | Jun 2017 |