| 3801 | Saco Oil Company | El Dorado, KS 67042 | Oil Operator | Jan 2001 |
| 3802 | Sag Oil Company LLC | Wellsville, KS 66092 | Oil Operator | Mar 2025 |
| 3803 | Sage Drilling Co | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 3804 | Sage NR Ok LLC | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2025 |
| 3805 | Sage, Larry George | Virgil, KS 66870 | Oil Operator | Dec 2019 |
| 3806 | Sagebrush Operating LLC | Denver, CO 80203 | Oil & Gas Operator | Feb 2025 |
| 3807 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Jul 2025 |
| 3808 | Salt Creek Resources, LLC | Caney, KS 67333 | Oil Operator | Oct 2019 |
| 3809 | Salt Fork Produc | | Oil Operator | Oct 1987 |
| 3810 | Sam W Mays Jr LLC | Eureka, KS 67045 | Oil & Gas Operator | Apr 2018 |
| 3811 | Samco Investments | | Oil Operator | Feb 2025 |
| 3812 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 3813 | Samson Properties, Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2008 |
| 3814 | Samson Resources | | Oil Operator | Jan 1994 |
| 3815 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2025 |
| 3816 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 3817 | Samuel Gary Jr. And Assoc., Inc. | | Oil & Gas Operator | Mar 2023 |
| 3818 | Samuel Jackson Production Co | | Oil Operator | Mar 2025 |
| 3819 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Jun 2025 |
| 3820 | San Pet Inc | McPherson, KS 67460 | Oil Operator | May 1997 |
| 3821 | San Saba Energy | Hays, KS 67601 | Oil Operator | May 1998 |
| 3822 | Sananco Energy C | | Oil Operator | Aug 1987 |
| 3823 | Sand Bar Oil Com | | Oil Operator | Jun 1986 |
| 3824 | Sand Dollar Ener | | Oil Operator | Aug 1984 |
| 3825 | Sand Point LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Dec 2020 |
| 3826 | Sandefer Larry | | Oil Operator | Aug 1993 |
| 3827 | Sanders, Arthur J. | Wichita, KS 67217 | Oil Operator | Nov 1989 |
| 3828 | Sanders, Jack W | Wellsville, KS 66092 | Oil Operator | Feb 1996 |
| 3829 | Sandhill L.L.C. | Wichita, KS 67202 | Gas Operator | Jun 2003 |
| 3830 | Sandhills Oil Co. | Copan, OK 74022 | Oil Operator | Aug 1997 |
| 3831 | Sandlin Oil Corp | Dacono, CO 80514 | Oil & Gas Operator | Jun 2025 |
| 3832 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Jul 2025 |
| 3833 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Jul 2025 |
| 3834 | Santa Fe Mineral | | Gas Operator | Oct 1994 |
| 3835 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 3836 | Santa Fe Pipe & | | Oil & Gas Operator | Dec 1991 |
| 3837 | Satchell Creek Petroleum, LLC | Wichita, KS 67205 | Oil Operator | Jul 2024 |
| 3838 | Sauder Earl W | | Oil & Gas Operator | Jan 1992 |
| 3839 | Sauder George E | | Oil Operator | Nov 1996 |
| 3840 | Sauder Oil Co., LLC | Madison, KS 66860 | Oil Operator | Mar 2025 |
| 3841 | Sauder, Earl W. (Deceased) | Emporia, KS 66801 | Oil & Gas Operator | Nov 1997 |
| 3842 | Sauvage W W Inco | | Oil Operator | Nov 1989 |
| 3843 | Savage James F | | Oil Operator | Dec 1996 |
| 3844 | Sawdust Oil Comp | | Oil & Gas Operator | May 1987 |
| 3845 | Saxon Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Oct 2009 |
| 3846 | Scavenger Oil Co., Inc. | Englewood, CO 80111 | Oil & Gas Operator | Mar 2000 |
| 3847 | Schaben Oil LLC | Hays, KS 67601 | Oil Operator | Mar 2025 |
| 3848 | Schankie & Sons, LLC | Madison, KS 66860 | Oil Operator | Mar 2025 |
| 3849 | Schankie Well Se | | Oil Operator | Mar 1995 |
| 3850 | Schankie Well Service, Inc. | Madison, KS 66860 | Oil Operator | Mar 2025 |
| 3851 | Scheck Oil Operation | | Oil & Gas Operator | Mar 2025 |
| 3852 | Scheuneman, Lester | Ridgeway, MO 64481 | Oil Operator | May 2019 |
| 3853 | Schierling Eldon | | Oil & Gas Operator | Aug 1986 |
| 3854 | Schierling, Eldon J. | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 3855 | Schindler Oil | | Oil Operator | Dec 2009 |
| 3856 | Schindler Oil, LLC | Madison, KS 66860 | Oil Operator | Mar 2025 |
| 3857 | Schindler, Joe | Madison, KS 66860 | Oil Operator | Nov 2024 |
| 3858 | Schippers Oilfield Services, LLC | Hoxie, KS 67740 | Oil Operator | Mar 2025 |
| 3859 | Schlobohm Starr | | Oil Operator | Dec 1996 |
| 3860 | Schlobohm, Starr F. | Wolfeboro, NH 03894 | Oil Operator | Jul 2004 |
| 3861 | Schlotterbeck Ir | | Oil Operator | Nov 1990 |
| 3862 | Schmeid Ranch, LLC | Hays, KS 67601 | Oil Operator | Jun 2024 |
| 3863 | Schmidt Construction Services LLC | | Oil Operator | Mar 2025 |
| 3864 | Schmidt Kermit O | | Oil & Gas Operator | Sep 1995 |
| 3865 | Schmidt, Kermit | | Oil & Gas Operator | Dec 2009 |
| 3866 | Schmidt, Norman D. | Galva, KS 67443 | Gas Operator | Oct 1997 |
| 3867 | Schmidt, Terry D. | McPherson, KS 67460 | Oil Operator | Mar 2025 |
| 3868 | Schmidt, Tracy | McPherson, KS 67460 | Oil Operator | Mar 2025 |
| 3869 | Schmitt Carmen I | | Oil Operator | Dec 1996 |
| 3870 | Schneider Oil Co | | Oil Operator | Oct 1988 |
| 3871 | Schneltz Oil Com | | Oil Operator | May 1992 |
| 3872 | School Creek Corporation | Winfield, KS 67156 | Oil Operator | Jan 2000 |
| 3873 | Schrag Oil Co | | Oil & Gas Operator | Jun 2004 |
| 3874 | Schreiber Oil Co. | | Oil Operator | Dec 2009 |
| 3875 | Schuetz, Edna, Ed & Ronald(Deceased) | Coffeyville, KS 67337 | Oil Operator | Nov 2011 |
| 3876 | Schulein Company LLC | Denver, CO 80246 | Oil & Gas Operator | Mar 2025 |
| 3877 | Schulein Robert | | Oil & Gas Operator | Dec 1995 |
| 3878 | Schulte Oil | Garnett, KS 66032 | Oil Operator | Mar 2022 |
| 3879 | Schulte Oil - C | | Oil Operator | Dec 1989 |
| 3880 | Schulz Oil & Gas, Inc. | Canton, KS 67428 | Oil & Gas Operator | Dec 2024 |
| 3881 | Schulz Roger A | | Oil & Gas Operator | Dec 1996 |
| 3882 | Schwertfeger, Donald E. Oil | Preston, KS 67569 | Oil Operator | Jan 1999 |
| 3883 | Schwien Tank & Lease Service Inc | Bazine, KS 67516 | Oil Operator | May 2000 |
| 3884 | Scimitar Resc Li | | Oil Operator | Oct 1982 |
| 3885 | Scott Services LLC | Plainville, KS 67663 | Oil Operator | Mar 2025 |
| 3886 | Scott'S Production, LLC | Roxbury, KS 67476 | Oil Operator | Mar 2025 |
| 3887 | Scott'S Well Service Inc | Roxbury, KS 67476 | Oil Operator | Nov 2012 |
| 3888 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Jul 2025 |
| 3889 | SCZ Resources, LLC | Houston, TX 77055 | Oil Operator | Mar 2025 |
| 3890 | Sdoco, LLC | Highlands Ranch, CO 80129 | Oil Operator | Feb 2025 |
| 3891 | Seagull Operatin | | Oil & Gas Operator | Jul 1995 |
| 3892 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 3893 | Sedona Oil & Gas Corporation | Austin, TX 78746 | Oil & Gas Operator | Jul 2025 |
| 3894 | See Oil | | Oil Operator | Mar 2025 |
| 3895 | Seed Group/Aa Drilling | | Oil Operator | Oct 2009 |
| 3896 | Seeker, LLC | Newkirk, OK 74647 | Oil & Gas Operator | Nov 2019 |
| 3897 | Seelig Oil Corpo | | Oil Operator | Apr 1985 |
| 3898 | Seewald, Hughes | Amarillo, TX 79105 | Gas Operator | Jan 1997 |
| 3899 | Seibert Oil, LLC | Macksville, KS 67557 | Oil & Gas Operator | Sep 2023 |
| 3900 | Sek Energy, LLC | Benedict, KS 66714 | Oil & Gas Operator | Mar 2025 |