| 27701 | So & Jo, LLC | Kansas City, MO 64158 | Oil Operator | Dec 2021 |
| 27702 | So Operating Company | Cisco, TX 76437 | Oil & Gas Operator | Apr 2025 |
| 27703 | So-I , A General Partnership | Kansas City, MO 64106 | Oil & Gas Operator | Nov 2023 |
| 27704 | Soap Creek Associates, Inc. | Broomfield, CO 80020-2995 | Oil Operator | Jan 2025 |
| 27705 | Soc Resources Inc. | | Oil & Gas Operator | Dec 2024 |
| 27706 | Society Of Bros In Pa Inc | Farmington, PA 15437-0240 | Gas Operator | Dec 2024 |
| 27707 | Soco Gas Properties | Goliad, TX 77963 | Oil & Gas Operator | Apr 2025 |
| 27708 | Socorro Exploration, Inc. | Lubbock, TX 79464 | Oil & Gas Operator | Apr 2025 |
| 27709 | Socorro Pet Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 1995 |
| 27710 | Sogc, Inc. | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Feb 2025 |
| 27711 | Sogc, LLC | Salt Lake Cty, UT 84131 | Oil & Gas Operator | Apr 2025 |
| 27712 | Sogo III LLC | Midland, TX 79702 | Oil & Gas Operator | Jul 2017 |
| 27713 | Sohio Alaska Petroleum Company | | Oil & Gas Operator | Dec 1981 |
| 27714 | Sohio Petr Co-Gulf Oil Corp | | Oil & Gas Operator | Dec 1979 |
| 27715 | Sohio Petroleum Co. | Casper, WY 82602 | Oil & Gas Operator | Apr 1986 |
| 27716 | Sohio Petroleum Co. Et Al | | Oil & Gas Operator | May 1979 |
| 27717 | Sohio-Stand Oil Prod Co | Houston, TX 77210-9928 | Oil & Gas Operator | Jan 1989 |
| 27718 | Soil Energy, Inc. | Imperial, TX 79743 | Oil & Gas Operator | Apr 2025 |
| 27719 | Sois-Osage Inc | | Oil & Gas Operator | Oct 2006 |
| 27720 | Sojitz Energy Venture, Inc. | Houston, TX 77042 | Oil & Gas Operator | Feb 2018 |
| 27721 | Sojourner Drilling Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 2025 |
| 27722 | Sokan Operating, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2024 |
| 27723 | Sol Oil Co., L.C. | Crane, TX 79731 | Oil Operator | Apr 2025 |
| 27724 | Sola Oil Company, Inc. | | Oil & Gas Operator | Aug 1991 |
| 27725 | Sola Operating, LLC | Trout, LA 71371 | Oil Operator | Apr 2025 |
| 27726 | Solano Gas Processing, Inc. | Austin, TX 78759 | Oil & Gas Operator | Aug 1998 |
| 27727 | Solar Exploration TX LLC | Tulsa, OK 74133 | Oil Operator | Dec 2018 |
| 27728 | Solar Petroleum Inc | | Oil Operator | May 1983 |
| 27729 | Solar Sportsystems, Inc. | East Aurora, NY 14052 | Gas Operator | Dec 2023 |
| 27730 | Solatex | | Oil & Gas Operator | Oct 1978 |
| 27731 | Solatex Resources, LTD | Houston, TX 77257 | Oil & Gas Operator | Apr 2025 |
| 27732 | Soldier Creek Energy, LLC | Edmond, OK 73013 | Oil & Gas Operator | Apr 2025 |
| 27733 | Soldier Operating LLC | | Oil & Gas Operator | Dec 2024 |
| 27734 | Soles Larry - Fe | | Oil Operator | Nov 1986 |
| 27735 | Solid Rock Prod. | | Oil Operator | Nov 1994 |
| 27736 | Solimar Energy LLC | | Oil & Gas Operator | Dec 2024 |
| 27737 | Solis Partners, L.L.C. | Midland, TX 79707 | Oil & Gas Operator | Jan 2025 |
| 27738 | Sollohub Petro LLC | Von Ormy, TX 78073 | Oil Operator | Apr 2025 |
| 27739 | Solo Operating Services, LLC | Falfurrias, TX 78355 | Gas Operator | Apr 2025 |
| 27740 | Solomon Exploration Inc. | Havre, MT 59501 | Gas Operator | Sep 2024 |
| 27741 | Solomon Production Corporation | Pullman, WV 26421-0003 | Oil & Gas Operator | Dec 2021 |
| 27742 | Solutions Projects And Consulting, LLC | Houston, TX 77070 | Oil Operator | Apr 2025 |
| 27743 | Somerset Energy | | Oil Operator | Feb 1986 |
| 27744 | Somerset Energy, Inc. | Louisburg, KS 66053 | Oil Operator | Dec 2024 |
| 27745 | Somerset Oil & Gas Company | Portland, TX 78374 | Oil & Gas Operator | Dec 2006 |
| 27746 | Somerset Operating, LLC | Weatherford, TX 76086 | Gas Operator | Apr 2025 |
| 27747 | Somex Energy Company | San Antonio, TX 78230 | Oil & Gas Operator | Mar 2002 |
| 27748 | Sommer Oil LLC | Richmond, KS 66080 | Oil Operator | Dec 2024 |
| 27749 | Somoco Inc | | Oil & Gas Operator | Jan 2025 |
| 27750 | Somont Oil Co., Inc. | Spring, TX 77379 | Oil & Gas Operator | Jan 2025 |
| 27751 | Son-Dad Oil & Gas | | Oil & Gas Operator | Dec 1994 |
| 27752 | Sonat Exploration Co. | Houston, TX 77251 | Oil & Gas Operator | Dec 2021 |
| 27753 | Sonat Exploration Co. - Houston | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27754 | Sonat Exploration Co. - Midland | Houston, TX 77251 | Oil & Gas Operator | Mar 1999 |
| 27755 | Sonat Exploration Company -Tyler | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27756 | Sonat Exploration Company-MCR | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27757 | Sonat Exploration Gom Inc. | Houston, TX 77251 | Oil & Gas Operator | Dec 1999 |
| 27758 | Sonat Raton, L.L.C. | | Gas Operator | Sep 2005 |
| 27759 | Sonata Oil & Gas Corp Inc | Stratford, OK 74812 | Oil & Gas Operator | Apr 2014 |
| 27760 | Sone Energy Corporation | Plano, TX 75023 | Oil & Gas Operator | Sep 1995 |
| 27761 | Sonerra Resources Corporation | Nacogdoches, TX 75963 | Oil & Gas Operator | Apr 2025 |
| 27762 | Song Production Company | Lindsay, OK 73052-0369 | Oil & Gas Operator | Jun 2015 |
| 27763 | Songer Harriett R | Brookville, PA 15825-5367 | Oil & Gas Operator | Dec 2010 |
| 27764 | Sonkar, Inc. | Sunburst, MT 59482 | Oil Operator | Jan 2025 |
| 27765 | Sonny King | | Oil & Gas Operator | Jan 2025 |
| 27766 | Sonny King Production | | Oil & Gas Operator | Jan 2025 |
| 27767 | Sonny'S Tank Trucks Inc | Ratliff City, OK 73481 | Oil Operator | Feb 2025 |
| 27768 | Sonoble Operating, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jun 2003 |
| 27769 | Sonoma Energy Corporation | Park City, UT 84068 | Oil & Gas Operator | Feb 2010 |
| 27770 | Sonoma Resources LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2024 |
| 27771 | Sonora Petroleum Corp. | Austin, TX 78734 | Oil & Gas Operator | Apr 2025 |
| 27772 | Sonora Producing, Inc. | | Oil & Gas Operator | May 2006 |
| 27773 | Sonoran Energy Inc. | Addison, TX 75001 | Oil & Gas Operator | Apr 2025 |
| 27774 | Sonterra Energy LLC | Wichita, KS 67226 | Oil & Gas Operator | Jul 2022 |
| 27775 | Sonterra Oil & Gas, Inc. | Wichita, KS 67217 | Oil & Gas Operator | Apr 2025 |
| 27776 | Sonterra Operating, Inc. | Houston, TX 77060 | Oil & Gas Operator | Apr 2025 |
| 27777 | Sooner Acquisition Corp | Wichita, KS 67206 | Oil & Gas Operator | Sep 1993 |
| 27778 | Sooner Corporation | | Oil & Gas Operator | Oct 1990 |
| 27779 | Sooner Crude Inc | Tulsa, OK 74136-9107 | Oil & Gas Operator | Sep 2008 |
| 27780 | Sooner Drilling Inc | Shawnee, OK 74802-0037 | Oil & Gas Operator | Jan 2005 |
| 27781 | Sooner Energy LLC | Norman, OK 73069 | Oil & Gas Operator | Sep 2005 |
| 27782 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 27783 | Sooner Oil & Gas | Fairview, OK 73737-1806 | Oil & Gas Operator | Jan 2025 |
| 27784 | Sooner Oil & Gas Management Inc | Crescent, OK 73028 | Oil & Gas Operator | Feb 2025 |
| 27785 | Sooner Oilfield Services Inc | Piedmont, OK 73078-0810 | Oil & Gas Operator | May 2024 |
| 27786 | Sooner Operating Co Inc | Casper, WY 83602 | Oil Operator | Feb 2025 |
| 27787 | Sooner Pipe & Supply Corp | | Oil & Gas Operator | Nov 2004 |
| 27788 | Sooner Resources, Inc. | | Oil & Gas Operator | Mar 1987 |
| 27789 | Sooner Trend Exploration Inc | Kingfisher, OK 73750-4752 | Oil & Gas Operator | Dec 2015 |
| 27790 | Sopac Exploration Inc | Drumright, OK 74030 | Oil & Gas Operator | Jun 1993 |
| 27791 | Soper Production | | Oil & Gas Operator | Dec 2011 |
| 27792 | Sorensen, Kim A. | Abbyville, KS 67510 | Oil Operator | Oct 2024 |
| 27793 | Sorrels J R Dba Cheyenne Oil Properties | Ponca City, OK 74601 | Oil & Gas Operator | Jul 2022 |
| 27794 | Sorto, Peters God | Somerset, TX 78069 | Oil Operator | Apr 2025 |
| 27795 | Soto Inc. | Ozona, TX 76943 | Oil & Gas Operator | Aug 2020 |
| 27796 | Sotol Energy, Inc. | Magnolia, TX 77354 | Oil & Gas Operator | Apr 2025 |
| 27797 | Sotrana-Texas Corp. | | Oil & Gas Operator | Oct 1984 |
| 27798 | Sotta, Donald E. | McCune, KS 66753 | Oil Operator | Dec 2024 |
| 27799 | Soule, Gilbert A. | Madison, KS 66860 | Oil Operator | Jan 2002 |
| 27800 | Soule, Richard A. | Eureka, KS 67045 | Oil Operator | Sep 2019 |