| 301 | SOUTH HOGSBACK | Lincoln County, WY | Oil & Gas Property | Jan 2025 |
| 302 | SOUTH KITTY | Campbell County, WY | Gas Property | Jun 2004 |
| 303 | SOUTH LABARGE | Sublette County, WY | Oil & Gas Property | Jan 2025 |
| 304 | SOUTH POWELL | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 305 | SOUTH ROZET | Campbell County, WY | Oil & Gas Property | Jan 2025 |
| 306 | SOUTH SAND DRAW | Fremont County, WY | Oil & Gas Property | Jan 2025 |
| 307 | SOUTH SAND DUNES | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 308 | SOUTH SLATTERY UNIT | Campbell County, WY | Oil & Gas Property | Jan 2025 |
| 309 | SOUTH SPRING CREEK | Park County, WY | Oil & Gas Property | Dec 2024 |
| 310 | SOUTH TWO RIM | Sweetwater County, WY | Oil & Gas Property | Jan 2025 |
| 311 | SOUTH UNIT | Natrona County, WY | Oil & Gas Property | Jan 2025 |
| 312 | SOUTH WALLACE | Campbell County, WY | Oil & Gas Property | Jan 2025 |
| 313 | SOUTHERLAND | Campbell County, WY | Gas Property | Sep 2002 |
| 314 | SPANISH CASTLE FED | Sweetwater County, WY | Oil & Gas Property | Jan 2025 |
| 315 | SPARROW FED 3471-2905 | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 316 | SPATULA CS STATE | Campbell County, WY | Gas Property | Dec 2019 |
| 317 | SPATZ 16-63 | Laramie County, WY | Oil & Gas Property | Jan 2025 |
| 318 | SPC CBM | Campbell County, WY | Gas Property | Mar 2011 |
| 319 | SPEARHEAD | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 320 | SPEARHEAD | Converse County, WY | Oil & Gas Property | Apr 1989 |
| 321 | SPEARHEAD | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 322 | SPEAS | Natrona County, WY | Oil Property | Feb 2025 |
| 323 | SPECTER CS FED | Johnson County, WY | Gas Property | Dec 2019 |
| 324 | SPELLMAN | Campbell County, WY | Oil & Gas Property | Oct 2017 |
| 325 | SPELLMAN FED | Campbell County, WY | Gas Property | Oct 2017 |
| 326 | SPENCE DOME | Big Horn County, WY | Oil & Gas Property | Jan 2023 |
| 327 | SPENCE UNIT B | Big Horn County, WY | Oil Property | Jan 2023 |
| 328 | SPIKE STATE | Sweetwater County, WY | Oil & Gas Property | Sep 2017 |
| 329 | SPILLMAN DRAW UNIT 3 | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 330 | SPILLMAN DRAW UNIT 3 | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 331 | SPILLMAN DRAW UNIT 35-73 | Converse County, WY | Oil & Gas Property | Dec 2024 |
| 332 | SPIRIT CS FEDERAL | Johnson County, WY | Gas Property | Dec 2019 |
| 333 | SPLIT HILL UNIT | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 334 | SPLIT HILL UNIT 37-6 | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 335 | SPLIT HILL UNIT 37-6 | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 336 | SPOMER | Campbell County, WY | Oil & Gas Property | Jan 2025 |
| 337 | SPOTTED HORSE | Campbell County, WY | Gas Property | Jul 2015 |
| 338 | SPRATT | Fremont County, WY | Oil & Gas Property | Jan 2025 |
| 339 | SPRING CR | Park County, WY | Oil & Gas Property | Dec 2024 |
| 340 | SPRING HOLE UNIT | Campbell County, WY | Oil Property | Jan 2025 |
| 341 | SPRINGEN | Campbell County, WY | Oil & Gas Property | Feb 2025 |
| 342 | SPRINGEN | Campbell County, WY | Oil & Gas Property | Jul 2013 |
| 343 | SPRINGEN R | Campbell County, WY | Oil & Gas Property | Jul 1998 |
| 344 | SPRINGER | Sheridan County, WY | Gas Property | Oct 1986 |
| 345 | SPRUCE | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 346 | SPRUCE | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 347 | SPU 1 | Campbell County, WY | Gas Property | Dec 2024 |
| 348 | SPU 2 | Campbell County, WY | Gas Property | Dec 2024 |
| 349 | SPU 3 | Campbell County, WY | Gas Property | Dec 2024 |
| 350 | SPU 4 | Campbell County, WY | Gas Property | Dec 2024 |
| 351 | SPU BELUS | Campbell County, WY | Gas Property | Sep 2019 |
| 352 | SPU RECORD | Campbell County, WY | Gas Property | Dec 2024 |
| 353 | SPU RECORD | Campbell County, WY | Gas Property | Dec 2024 |
| 354 | SPU STATE | Campbell County, WY | Gas Property | Dec 2024 |
| 355 | SPU STATE | Campbell County, WY | Gas Property | Aug 2018 |
| 356 | SQUAIRES | Campbell County, WY | Gas Property | Jan 2010 |
| 357 | SQUAW BUTTE | Fremont County, WY | Oil & Gas Property | Sep 2012 |
| 358 | SQUIRE DILLON | Big Horn County, WY | Oil Property | Jan 2025 |
| 359 | SR CATTLE | Sheridan County, WY | Gas Property | Jun 2015 |
| 360 | SRU 1 | Campbell County, WY | Gas Property | Dec 2024 |
| 361 | SRU 1 | Johnson County, WY | Gas Property | Dec 2024 |
| 362 | SRU 2 | Campbell County, WY | Gas Property | Dec 2024 |
| 363 | SRU 3 | Campbell County, WY | Gas Property | May 2023 |
| 364 | SRU 3 | Campbell County, WY | Gas Property | Dec 2024 |
| 365 | SRU 4 | Campbell County, WY | Gas Property | Dec 2024 |
| 366 | SRU BARBER CK RANCH | Campbell County, WY | Gas Property | Dec 2024 |
| 367 | SRU IBERLIN | Johnson County, WY | Gas Property | Dec 2024 |
| 368 | SRU IBERLIN RANCH | Campbell County, WY | Gas Property | Dec 2024 |
| 369 | SRU STATE | Johnson County, WY | Gas Property | Dec 2024 |
| 370 | SRU STATE | Campbell County, WY | Gas Property | Dec 2024 |
| 371 | SS 01 | Campbell County, WY | Gas Property | Jun 2015 |
| 372 | SS 01 | Campbell County, WY | Gas Property | Jan 2015 |
| 373 | SS 02 | Campbell County, WY | Gas Property | Jun 2015 |
| 374 | SS 03 | Campbell County, WY | Gas Property | Jul 2015 |
| 375 | SS 04 | Campbell County, WY | Gas Property | Jun 2015 |
| 376 | SS 05 | Campbell County, WY | Gas Property | Jul 2015 |
| 377 | SS 06 | Campbell County, WY | Gas Property | Jun 2015 |
| 378 | SS 07 | Campbell County, WY | Gas Property | Jul 2015 |
| 379 | SS 07 | Campbell County, WY | Gas Property | Jul 2015 |
| 380 | SS 08 | Campbell County, WY | Gas Property | Jul 2015 |
| 381 | SS 09 | Campbell County, WY | Gas Property | Jul 2015 |
| 382 | SS 10 | Campbell County, WY | Gas Property | Jul 2015 |
| 383 | SS 11 | Campbell County, WY | Gas Property | Jul 2015 |
| 384 | SS 12 | Campbell County, WY | Gas Property | Jul 2015 |
| 385 | SS 14 | Campbell County, WY | Gas Property | Mar 2015 |
| 386 | SS 15 | Campbell County, WY | Gas Property | Jul 2015 |
| 387 | SS 16 | Campbell County, WY | Gas Property | Jun 2015 |
| 388 | SS FED | Campbell County, WY | Gas Property | Jul 2015 |
| 389 | SSC NORTH UNIT | Natrona County, WY | Oil & Gas Property | Jan 2025 |
| 390 | SSC UNIT A | Natrona County, WY | Oil & Gas Property | Jan 2025 |
| 391 | SSU MLT 16-093668-2XNH | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 392 | SSU MLT FED 26-143668 | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 393 | SSU RANKIN FED 16-093668-5XNH | Converse County, WY | Oil & Gas Property | Jan 2025 |
| 394 | ST 5175-16 | Campbell County, WY | Gas Property | Feb 2015 |
| 395 | ST 5275-36 | Campbell County, WY | Gas Property | May 2016 |
| 396 | ST PAINTER RESERV UN 31-5AH | Uinta County, WY | Oil & Gas Property | Jan 2025 |
| 397 | ST PRU | Uinta County, WY | Oil & Gas Property | Jan 2025 |
| 398 | ST ROMAIN | Sheridan County, WY | Gas Property | Jun 2015 |
| 399 | STAGE STOP | Sweetwater County, WY | Oil & Gas Property | Sep 2014 |
| 400 | STAGECOACH | Sweetwater County, WY | Oil & Gas Property | Jan 2025 |