| 201 | SIDON CANAL | Big Horn County, WY | Oil & Gas Property | Jun 2025 |
| 202 | SIERRA MADRE | Carbon County, WY | Oil & Gas Property | Jun 2025 |
| 203 | SIGNAL HILL | Crook County, WY | Oil & Gas Property | Jun 2025 |
| 204 | SILO STATE | Laramie County, WY | Oil & Gas Property | Feb 2018 |
| 205 | SILVER | Converse County, WY | Oil & Gas Property | Jul 2025 |
| 206 | SILVER TIP | Park County, WY | Oil & Gas Property | Jun 2025 |
| 207 | SIMBA FED 4 | Johnson County, WY | Oil & Gas Property | Jun 2025 |
| 208 | SIMONSEN | Big Horn County, WY | Oil & Gas Property | Feb 1991 |
| 209 | SIMPSON | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 210 | SIMPSON | Campbell County, WY | Oil & Gas Property | May 2025 |
| 211 | SIMPSON PATENTED | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 212 | SIMPSON RANCH | Campbell County, WY | Oil & Gas Property | May 2025 |
| 213 | SIMS | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 214 | SIMS | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 215 | SIN-DALY-FED | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 216 | SIN-VIDETTA-W-7783 | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 217 | SINGLETREE LAND 17-64 | Laramie County, WY | Oil & Gas Property | Jun 2025 |
| 218 | SIOUX RANCH | Converse County, WY | Gas Property | Nov 2015 |
| 219 | SIOUX STATELINE | Niobrara County, WY | Oil Property | Jan 2007 |
| 220 | SISTER FED | Johnson County, WY | Oil & Gas Property | Jun 2025 |
| 221 | SJ FEE | Carbon County, WY | Oil & Gas Property | Jun 2025 |
| 222 | SKELETON SPRING | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 223 | SKELTON | Hot Springs County, WY | Oil & Gas Property | Jun 2025 |
| 224 | SKULL CREEK | Park County, WY | Oil & Gas Property | May 2017 |
| 225 | SKUNK CREEK FED 3772-0718 | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 226 | SKYLINE | Converse County, WY | Oil & Gas Property | Oct 2024 |
| 227 | SKYLINE FED | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 228 | SKYWARD CS | Johnson County, WY | Gas Property | May 2023 |
| 229 | SLAGLE | Weston County, WY | Oil & Gas Property | Oct 2019 |
| 230 | SLATE CREEK | Lincoln County, WY | Oil & Gas Property | Jun 2025 |
| 231 | SLATTERY | Campbell County, WY | Oil & Gas Property | Jul 2021 |
| 232 | SLICK | Washakie County, WY | Oil & Gas Property | Jun 2025 |
| 233 | SLOU 0 | Natrona County, WY | Oil & Gas Property | Jun 2025 |
| 234 | SLOU 1 | Natrona County, WY | Oil & Gas Property | Apr 2025 |
| 235 | SLOU 2 | Natrona County, WY | Oil & Gas Property | Jun 2025 |
| 236 | SLOU 25ARDWC2SE36 | Natrona County, WY | Oil Property | Jun 2025 |
| 237 | SLOU 3 | Natrona County, WY | Oil & Gas Property | Jun 2025 |
| 238 | SLPU | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 239 | SLPU FED 43-13H | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 240 | SLPU STATE | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 241 | SLURRY BOMBER FED 4076-34-27-1SH | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 242 | SM COBB | Carbon County, WY | Oil & Gas Property | Aug 2021 |
| 243 | SM NICHOLS | Carbon County, WY | Oil & Gas Property | Jun 2025 |
| 244 | SM SALISBURY | Carbon County, WY | Oil & Gas Property | Jun 2025 |
| 245 | SMACY TWENTY MILE | Campbell County, WY | Gas Property | May 2012 |
| 246 | SMATHERS 34-67-14N | Niobrara County, WY | Oil & Gas Property | Jun 2025 |
| 247 | SMITH | Sheridan County, WY | Gas Property | Jun 2015 |
| 248 | SMITH | Campbell County, WY | Oil & Gas Property | Feb 2006 |
| 249 | SMITH | Sheridan County, WY | Gas Property | Jun 2015 |
| 250 | SMITH | Campbell County, WY | Oil & Gas Property | Feb 2014 |
| 251 | SMITH | Natrona County, WY | Oil Property | May 1979 |
| 252 | SMITH | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 253 | SMITH 1 | Big Horn County, WY | Oil & Gas Property | Jun 2025 |
| 254 | SMITH CREEK | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 255 | SMITH RANCHO | Carbon County, WY | Gas Property | Mar 2023 |
| 256 | SMITH STATE | Weston County, WY | Oil & Gas Property | Aug 2018 |
| 257 | SMITH W-22464 | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 258 | SMOKEPOLE CS FED | Campbell County, WY | Gas Property | Jul 2016 |
| 259 | SMOKEY FED 4176-18-19-1FH | Johnson County, WY | Oil & Gas Property | Jun 2025 |
| 260 | SMOKEY FED 4271-17 | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 261 | SNAGGLE 4472-1324-1PH | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 262 | SNODDY PATENTED | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 263 | SNODGRASS | Campbell County, WY | Gas Property | Aug 2011 |
| 264 | SNOWBIRD 2017-0 | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 265 | SNYDER CREEK FED | Niobrara County, WY | Oil & Gas Property | Jun 2025 |
| 266 | SO COLE CR | Converse County, WY | Oil Property | Jan 1993 |
| 267 | SO ELK BAS | Park County, WY | Oil & Gas Property | Dec 2022 |
| 268 | SO GLENROCK | Converse County, WY | Oil Property | May 2025 |
| 269 | SO HOGSBACK | Lincoln County, WY | Oil & Gas Property | Jun 2025 |
| 270 | SO LABARGE | Sublette County, WY | Oil & Gas Property | Jun 2025 |
| 271 | SO SPRING CREEK UNIT | Park County, WY | Oil & Gas Property | Jun 2025 |
| 272 | SO TIMBER | Campbell County, WY | Oil & Gas Property | Apr 2025 |
| 273 | SOCO | Carbon County, WY | Oil & Gas Property | May 2025 |
| 274 | SOCO TRIBAL | Fremont County, WY | Oil & Gas Property | Jun 2025 |
| 275 | SOL 1 | Sublette County, WY | Oil & Gas Property | May 2025 |
| 276 | SOLITUDE FED 3974-1720 | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 277 | SOMERS | Weston County, WY | Oil Property | Aug 2024 |
| 278 | SONNERS | Park County, WY | Oil & Gas Property | Jun 2025 |
| 279 | SORENSON | Campbell County, WY | Gas Property | Dec 2016 |
| 280 | SORENSON | Campbell County, WY | Gas Property | Jun 2017 |
| 281 | SORENSON | Johnson County, WY | Gas Property | May 2012 |
| 282 | SORREL STATE 3875-21-16-1FH | Converse County, WY | Oil & Gas Property | Jun 2025 |
| 283 | SOUKUP DRAW CS STATE | Campbell County, WY | Gas Property | Mar 2008 |
| 284 | SOURDOUGH | Sweetwater County, WY | Oil & Gas Property | May 2025 |
| 285 | SOURDOUGH | Sweetwater County, WY | Oil & Gas Property | May 2025 |
| 286 | SOURDOUGH | Sweetwater County, WY | Oil & Gas Property | Nov 2011 |
| 287 | SOURDOUGH GULCH | Sweetwater County, WY | Oil & Gas Property | Apr 2025 |
| 288 | SOUTH BAGGS | Carbon County, WY | Oil & Gas Property | May 2025 |
| 289 | SOUTH BAXTER | Sweetwater County, WY | Oil & Gas Property | Jun 2025 |
| 290 | SOUTH BLACK ROCK | Sweetwater County, WY | Gas Property | Apr 2025 |
| 291 | SOUTH BRADY | Sweetwater County, WY | Oil & Gas Property | Jun 2025 |
| 292 | SOUTH CAVE GULCH | Natrona County, WY | Oil & Gas Property | Jun 2025 |
| 293 | SOUTH COLE CREEK | Converse County, WY | Oil & Gas Property | May 2025 |
| 294 | SOUTH ELK BAS | Park County, WY | Oil & Gas Property | Jun 2025 |
| 295 | SOUTH FORK | Washakie County, WY | Oil & Gas Property | Jun 2025 |
| 296 | SOUTH FRISBY | Washakie County, WY | Oil & Gas Property | Jun 2025 |
| 297 | SOUTH GLENROCK | Converse County, WY | Oil & Gas Property | May 2025 |
| 298 | SOUTH HILIGHT UNIT | Campbell County, WY | Oil & Gas Property | Jun 2025 |
| 299 | SOUTH HOGSBACK | Lincoln County, WY | Oil & Gas Property | Jun 2025 |
| 300 | SOUTH KITTY | Campbell County, WY | Gas Property | Jun 2004 |