| 26201 | SKS Oil | Olney, TX 76374 | Oil & Gas Operator | Apr 2024 |
| 26202 | Skull Creek A LLC | Douglas, WY 82633 | Oil & Gas Operator | Jan 2024 |
| 26203 | Skull Creel Oil & Gas LLC | | Oil Operator | Nov 2023 |
| 26204 | Sky Development Corporation | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 26205 | Sky Oil Co | | Oil Operator | Dec 2022 |
| 26206 | Sky Oil, L.L.C. | St. Paul, KS 66771 | Oil Operator | Dec 2004 |
| 26207 | Sky Resources, Inc. | Graham, TX 76450 | Oil & Gas Operator | Apr 2024 |
| 26208 | Skybox, LLC | | Gas Operator | Dec 2021 |
| 26209 | Skybridge Energy LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2024 |
| 26210 | Skycap Energy, LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Feb 2024 |
| 26211 | Skye MS, LLC | | Oil & Gas Operator | Feb 2024 |
| 26212 | Skyhawk Energy, LLC | | Oil Operator | Dec 2023 |
| 26213 | Skyline Oil Company | Salt Lake City, UT 84111 | Oil & Gas Operator | Jan 1987 |
| 26214 | Skyline Operating Company, LLC | Alpine, UT 84004 | Oil & Gas Operator | Mar 2024 |
| 26215 | Skytop Oil & Gas | Giddings, TX 78942 | Oil & Gas Operator | Apr 2024 |
| 26216 | Skyway Energy LLC | Leesburg, OH 34748 | Oil & Gas Operator | Dec 2020 |
| 26217 | SKZ Inc. | | Oil Operator | Mar 1988 |
| 26218 | SL Petroleum LLC | | Oil & Gas Operator | Apr 2022 |
| 26219 | Slack Oil & Gas | Refugio, TX 78377 | Oil & Gas Operator | Dec 2012 |
| 26220 | Slack, R. C. | Pecos, TX 79772 | Oil & Gas Operator | Jul 2000 |
| 26221 | Slagel, H. P. Prod. Co. | Snyder, TX 79550 | Oil & Gas Operator | Dec 2006 |
| 26222 | Slam Resources, Inc. | | Oil & Gas Operator | Apr 1994 |
| 26223 | Slant Operating, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Apr 2024 |
| 26224 | Slapco - Emerald Exploration | | Gas Operator | Sep 1979 |
| 26225 | Slape Oil Company, Inc. | Houston, TX 77064 | Oil & Gas Operator | Jun 2011 |
| 26226 | Slate Holdings, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2024 |
| 26227 | Slate River Resources LLC | Denver, CO 80293 | Oil & Gas Operator | Apr 2008 |
| 26228 | Slatex Well Service, Inc. | Batson, TX 77519 | Oil Operator | Apr 2024 |
| 26229 | Slaughter J M Oil Company | Fort Worth, TX 76116 | Oil & Gas Operator | Jan 2001 |
| 26230 | Slaughter, Norman C. | | Oil & Gas Operator | Dec 2012 |
| 26231 | Slavens II Paul R | Tulsa, OK 74131-2244 | Oil & Gas Operator | Jan 2024 |
| 26232 | Slawson Clifford Ray | Healdton, OK 73438 | Oil Operator | Jan 1995 |
| 26233 | Slawson Explorat | | Oil & Gas Operator | Dec 1996 |
| 26234 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2024 |
| 26235 | Slawson, Donald C. | Wichita, KS 67202 | Oil & Gas Operator | Nov 2023 |
| 26236 | Slayton Resources Inc | Roswell, NM 88202 | Oil & Gas Operator | Jan 2024 |
| 26237 | Sledge Bros. Oil Co. | Midland, TX 79702 | Oil & Gas Operator | Mar 2016 |
| 26238 | Sledge Olen | Duncan, OK 73533 | Oil Operator | Dec 2023 |
| 26239 | Sledge, H. G., Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2016 |
| 26240 | Sleeth And Brooks Oil Co. | | Oil Operator | Jul 1989 |
| 26241 | Slick Inc. | MC Gregor, TX 76657 | Oil Operator | Apr 2024 |
| 26242 | Slick Production Inc | Tulsa, OK 74132-1718 | Oil & Gas Operator | Apr 2020 |
| 26243 | Slick Production, LLC | Muenster, TX 76252 | Oil & Gas Operator | Apr 2024 |
| 26244 | Slik-Dril P & A Inc | | Oil & Gas Operator | Sep 1989 |
| 26245 | Slik-Dril, Inc | | Oil & Gas Operator | Nov 1998 |
| 26246 | Slim Hole Inc | Farmington, NM 87401-7725 | Oil & Gas Operator | May 2013 |
| 26247 | Slingshot Oil & Gas | Houston, TX 77019 | Oil Operator | Apr 2024 |
| 26248 | Slinkard William & Roberta | Pawhuska, OK 74056 | Oil Operator | Oct 2022 |
| 26249 | Sliverville Oil Co LLC | Bradford, PA 16701-2770 | Oil & Gas Operator | Dec 2023 |
| 26250 | SLMW Energy Comp | | Oil Operator | Jan 1989 |
| 26251 | Slo Oil, LLC | El Dorado, KS 67042 | Oil Operator | Nov 2022 |
| 26252 | Sloan Oil Corporation | Humble, TX 77347 | Oil & Gas Operator | Mar 2015 |
| 26253 | Sloan Operations | | Oil Operator | Oct 2023 |
| 26254 | Sloan Petroleum Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 26255 | Sloan Petroleum Service Inc | Edmond, OK 73003-0018 | Oil & Gas Operator | Feb 2024 |
| 26256 | Sloan Production Co | | Oil Operator | Jan 2013 |
| 26257 | Slohcin, Inc. | Shelby, MT 59474 | Oil Operator | Mar 2024 |
| 26258 | Slone Energy, LLC | Oil Springs, KY 41238 | Oil & Gas Operator | Dec 2022 |
| 26259 | Slone VIctor | | Oil Operator | Jan 2024 |
| 26260 | Slow Poke Production-George L. Dobson Dba | Cut Bank, MT 59427 | Gas Operator | Dec 2023 |
| 26261 | Slow Stroke Productions LLC | | Oil Operator | Feb 2024 |
| 26262 | SLS Operating LLC | | Oil & Gas Operator | Jan 2024 |
| 26263 | SLT Dakota Operating, Inc. | Yukon, OK 73099 | Oil & Gas Operator | Apr 2024 |
| 26264 | SLT Production LLC | Sheffield, PA 16347-0547 | Oil & Gas Operator | Dec 2023 |
| 26265 | SM Energy | Denver, CO 80203-4361 | Gas Operator | Feb 2015 |
| 26266 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Apr 2024 |
| 26267 | SM Oil & Gas Inc | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2024 |
| 26268 | SM Operating Company LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 26269 | SM&O LLC | | Oil & Gas Operator | Dec 2023 |
| 26270 | Smackco, LTD. | | Oil & Gas Operator | Oct 2002 |
| 26271 | Smackover Drilling Company Inc | Shreveport, LA 71104 | Oil & Gas Operator | Feb 2024 |
| 26272 | Smackover Producing Co | | Oil & Gas Operator | Aug 2023 |
| 26273 | Smackover Shell LTD. Partnership | Houston, TX 77001 | Gas Operator | Apr 2000 |
| 26274 | Smail Denny Lee | Gretna, LA 70056 | Oil & Gas Operator | Dec 2023 |
| 26275 | Smail, James R. | Big Prairie, OH 44611 | Oil & Gas Operator | Dec 1998 |
| 26276 | Smal Energy Corp | Tyler, TX 75710 | Oil & Gas Operator | Oct 1995 |
| 26277 | Small, Louis E. | Angola, NY 14006 | Gas Operator | Dec 2022 |
| 26278 | Small, R.P. Corp. | Tulsa, OK 74103 | Oil Operator | Apr 2024 |
| 26279 | Smalley, Bill | Albany, TX 76430 | Oil & Gas Operator | Jul 2001 |
| 26280 | Smart H D Etal | | Oil Operator | Jan 2006 |
| 26281 | Smart Jr T J | Ryan, OK 73565 | Oil Operator | Sep 1994 |
| 26282 | Smart Service & Equipment LLC | Muskogee, OK 74401-5262 | Oil Operator | Aug 2013 |
| 26283 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2024 |
| 26284 | Sme Well SVC Inc | Herman, PA 16039-0156 | Oil & Gas Operator | Dec 2023 |
| 26285 | Smi Operating Company, LLC | Strong, AR 71765 | Oil & Gas Operator | Feb 2024 |
| 26286 | Smiley Drilling Co | Oklahoma City, OK 73156-0773 | Oil & Gas Operator | Apr 1999 |
| 26287 | Smilodon Oil Company | | Oil Operator | Nov 2023 |
| 26288 | Smith & Marrs Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2021 |
| 26289 | Smith & Smith Petroleum Corp | | Oil & Gas Operator | Nov 2023 |
| 26290 | Smith & Spragins | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1995 |
| 26291 | Smith Al | Duncan, OK 73534-0037 | Oil Operator | Dec 1998 |
| 26292 | Smith Alfred Dba A-S Oil | | Oil Operator | Jan 2024 |
| 26293 | Smith B R Jr Disposal Co | Erick, OK 73645 | Oil & Gas Operator | Jun 2021 |
| 26294 | Smith Bart Oil & Gas Expl Inc | Council Hill, OK 74428-9603 | Oil & Gas Operator | Apr 2015 |
| 26295 | Smith Bob W | Ardmore, OK 73403-5214 | Oil & Gas Operator | Sep 2014 |
| 26296 | Smith Bradley D & Paul C | Pawhuska, OK 74056 | Oil Operator | Jan 2024 |
| 26297 | Smith Brothers Enterprises | Ardmore, OK 73402 | Oil Operator | Jul 1998 |
| 26298 | Smith Brothers Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
| 26299 | Smith C W & Associates Inc | Oklahoma City, OK 73178-0105 | Oil & Gas Operator | Aug 2013 |
| 26300 | Smith C/Dba Sandy Supply | North FT Myers, FL 33903 | Oil & Gas Operator | Dec 1988 |