| 27901 | Slape Oil Company, Inc. | Houston, TX 77064 | Oil & Gas Operator | Jun 2011 |
| 27902 | Slate Holdings, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Feb 2026 |
| 27903 | Slate River Resources LLC | Denver, CO 80293 | Oil & Gas Operator | Apr 2008 |
| 27904 | Slatex Well Service, Inc. | Batson, TX 77519 | Oil Operator | Feb 2026 |
| 27905 | Slaughter J M Oil Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jan 2001 |
| 27906 | Slaughter, Norman C. | | Oil & Gas Operator | Dec 2012 |
| 27907 | Slavens II Paul R | Tulsa, OK 74131 | Oil & Gas Operator | Nov 2025 |
| 27908 | Slawson Clifford Ray | Healdton, OK 73438 | Oil Operator | Jan 1995 |
| 27909 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 27910 | Slawson Explorat | | Oil & Gas Operator | Dec 1996 |
| 27911 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2026 |
| 27912 | Slayton Resources Inc | Roswell, NM 88202 | Oil & Gas Operator | Dec 2025 |
| 27913 | Sledge Bros. Oil Co. | Midland, TX 79702 | Oil & Gas Operator | Mar 2016 |
| 27914 | Sledge Olen | Duncan, OK 73533 | Oil Operator | Nov 2025 |
| 27915 | Sledge, H. G., Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2016 |
| 27916 | Sleeth And Brooks Oil Co. | | Oil Operator | Jul 1989 |
| 27917 | Slick Inc. | MC Gregor, TX 76657 | Oil Operator | Feb 2026 |
| 27918 | Slick Production Inc | Tulsa, OK 74132-1718 | Oil & Gas Operator | Apr 2020 |
| 27919 | Slick Production, LLC | Muenster, TX 76252 | Oil & Gas Operator | Nov 2025 |
| 27920 | Slik-Dril P & A Inc | | Oil & Gas Operator | Sep 1989 |
| 27921 | Slik-Dril, Inc | | Oil & Gas Operator | Nov 1998 |
| 27922 | Slim Hole Inc | Farmington, NM 87401-7725 | Oil & Gas Operator | May 2013 |
| 27923 | Slimhole Engineering Co., Inc. | Richmond, TX 77469 | Oil & Gas Operator | Feb 2026 |
| 27924 | Slingshot Oil & Gas | Houston, TX 77019 | Oil Operator | Feb 2026 |
| 27925 | Slinkard, Roberta S | | Oil Operator | Oct 2025 |
| 27926 | Sliverville Oil Co LLC | Bradford, PA 16701-2770 | Oil & Gas Operator | Dec 2025 |
| 27927 | SLMW Energy Comp | | Oil Operator | Jan 1989 |
| 27928 | Slo Oil, LLC | El Dorado, KS 67042 | Oil Operator | Jul 2025 |
| 27929 | Sloan Oil Corporation | Humble, TX 77347 | Oil & Gas Operator | Mar 2015 |
| 27930 | Sloan Operations | | Oil Operator | Jul 2025 |
| 27931 | Sloan Petroleum Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 27932 | Sloan Petroleum Service Inc | Guthrie, OK 73044 | Oil & Gas Operator | Dec 2025 |
| 27933 | Sloan Production Co | | Oil Operator | Jan 2013 |
| 27934 | Slohcin, Inc. | Shelby, MT 59474 | Oil Operator | Jan 2026 |
| 27935 | Slone Energy, LLC | Oil Springs, KY 41238 | Oil & Gas Operator | Dec 2023 |
| 27936 | Slone, VIctor R | | Oil Operator | Nov 2025 |
| 27937 | Slow Poke Production-George L. Dobson Dba | Cut Bank, MT 59427 | Gas Operator | Sep 2025 |
| 27938 | Slow Stroke Productions LLC | | Oil Operator | Feb 2015 |
| 27939 | SLS Operating LLC | Seminole, OK 74868-5876 | Oil & Gas Operator | Nov 2025 |
| 27940 | SLT Dakota Operating, Inc. | Yukon, OK 73099 | Oil & Gas Operator | Feb 2026 |
| 27941 | SLT Production LLC | Sheffield, PA 16347-0547 | Oil & Gas Operator | Dec 2025 |
| 27942 | Sludge Treating, LLC | Hobbs, NM 88240 | Oil Operator | Dec 2025 |
| 27943 | SM Energy | Denver, CO 80203-4361 | Gas Operator | Feb 2015 |
| 27944 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Feb 2026 |
| 27945 | SM Oil & Gas Inc | Skiatook, OK 74070 | Oil & Gas Operator | Nov 2025 |
| 27946 | SM Operating Company LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 27947 | SM&O LLC | | Oil & Gas Operator | Nov 2025 |
| 27948 | Smackco, LTD. | | Oil & Gas Operator | Oct 2002 |
| 27949 | Smackco, LTD./Bay City Minerals, Inc. | | Gas Operator | May 1990 |
| 27950 | Smackover Drilling Co. Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jan 2025 |
| 27951 | Smackover Producing Co | | Oil & Gas Operator | Jan 2025 |
| 27952 | Smackover Shell LTD. Partnership | Houston, TX 77001 | Gas Operator | Apr 2000 |
| 27953 | Smail Denny Lee | Harvey, LA 70058 | Oil & Gas Operator | Dec 2024 |
| 27954 | Smail, James R. | Big Prairie, OH 44611 | Oil & Gas Operator | Dec 1998 |
| 27955 | Smal Energy Corp | Tyler, TX 75710 | Oil & Gas Operator | Oct 1995 |
| 27956 | Small, Louis E. | Orchard Park, NY 14127 | Gas Operator | Dec 2024 |
| 27957 | Small, R.P. Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 27958 | Smalley, Bill | Albany, TX 76430 | Oil & Gas Operator | Jul 2001 |
| 27959 | Smart Jr T J | Ryan, OK 73565 | Oil Operator | Sep 1994 |
| 27960 | Smart Service & Equipment LLC | Muskogee, OK 74401-5262 | Oil Operator | Aug 2013 |
| 27961 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 27962 | Sme Well SVC Inc | Herman, PA 16039-0156 | Oil & Gas Operator | Dec 2024 |
| 27963 | SMG Resources LLC | | Oil & Gas Operator | Sep 2025 |
| 27964 | Smiley Drilling Co | Oklahoma City, OK 73156-0773 | Oil & Gas Operator | Apr 1999 |
| 27965 | Smith & Marrs Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2021 |
| 27966 | Smith & Smith Petroleum Corp | | Oil & Gas Operator | Sep 2025 |
| 27967 | Smith & Spragins | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1995 |
| 27968 | Smith Al | Duncan, OK 73534-0037 | Oil Operator | Dec 1998 |
| 27969 | Smith Alfred Dba A-S Oil | Walters, OK 73572 | Oil Operator | Nov 2025 |
| 27970 | Smith Bart Oil & Gas Expl Inc | Council Hill, OK 74428-9603 | Oil & Gas Operator | Apr 2015 |
| 27971 | Smith Bob W | Ardmore, OK 73403-5214 | Oil & Gas Operator | Sep 2014 |
| 27972 | Smith Bradley D & Paul C | Pawhuska, OK 74056 | Oil Operator | Oct 2025 |
| 27973 | Smith Brothers Enterprises | Ardmore, OK 73402 | Oil Operator | Jul 1998 |
| 27974 | Smith Brothers Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 27975 | Smith C W & Associates Inc | Oklahoma City, OK 73178-0105 | Oil & Gas Operator | Aug 2013 |
| 27976 | Smith C/Dba Sandy Supply | North FT Myers, FL 33903 | Oil & Gas Operator | Dec 1988 |
| 27977 | Smith Cattle Inc | | Gas Operator | Dec 1994 |
| 27978 | Smith Cheryl A | Copan, OK 74022 | Oil Operator | Nov 2025 |
| 27979 | Smith Claude W | Henryetta, OK 74437-7553 | Oil Operator | May 2008 |
| 27980 | Smith Conley P Operating Co | Eglewood, CO 80112-3640 | Oil & Gas Operator | Jun 2000 |
| 27981 | Smith Connie M & Sheryle | Chelsea, OK 74016-1959 | Oil Operator | Feb 2017 |
| 27982 | Smith Doug | Tulsa, OK 74107 | Oil & Gas Operator | Feb 2016 |
| 27983 | Smith Edward F | Avant, OK 74001-0024 | Oil & Gas Operator | Nov 2014 |
| 27984 | Smith Energy 1986a Partnership | Alvin, TX 77511 | Oil & Gas Operator | Feb 2010 |
| 27985 | Smith Energy Company LLC | Purcell, OK 73080-4772 | Oil & Gas Operator | May 2015 |
| 27986 | Smith Energy Corp | | Oil & Gas Operator | Jan 2024 |
| 27987 | Smith Energy LLC | | Oil & Gas Operator | Dec 2025 |
| 27988 | Smith Energy Operating Company | Lubbock, TX 79423 | Oil & Gas Operator | Feb 2026 |
| 27989 | Smith Family LTD Partnership | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2004 |
| 27990 | Smith Harmon K | Wewoka, OK 74884 | Oil & Gas Operator | Jan 2013 |
| 27991 | Smith J S Production | Seminole, OK 74868 | Oil & Gas Operator | Nov 2025 |
| 27992 | Smith Jack Boyd | Elkhart, IN 46515-1968 | Oil & Gas Operator | Oct 2011 |
| 27993 | Smith Joyce | Okmulgee, OK 74447-6074 | Oil Operator | Mar 2025 |
| 27994 | Smith Kevin | Thermopolis, WY 82443 | Oil Operator | Sep 2024 |
| 27995 | Smith Land Surveying, Inc. Dba SLS Land & Energy Development | | Gas Operator | Dec 2021 |
| 27996 | Smith Lyle V & P | | Gas Operator | Sep 1993 |
| 27997 | Smith Management Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 1992 |
| 27998 | Smith Manus L MFG Inc | Oklahoma City, OK 73147 | Oil & Gas Operator | Nov 1998 |
| 27999 | Smith Max Dean | Wewoka, OK 74884 | Oil & Gas Operator | Oct 2025 |
| 28000 | Smith Mike D | Stillwater, OK 74074 | Oil & Gas Operator | Apr 2015 |