| 5301 | WINDSOR 35 | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 5302 | WINDSOR LV | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5303 | WINGFIELD | Yuma County, CO | Gas Property | Feb 2025 |
| 5304 | WINGFIELD | Yuma County, CO | Gas Property | Feb 2025 |
| 5305 | WINTER | Weld County, CO | Oil & Gas Property | Oct 2005 |
| 5306 | WINTER | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 5307 | WINTER FLATS | Mesa County, CO | Oil & Gas Property | Jan 2025 |
| 5308 | WINTER FLATS | Mesa County, CO | Oil & Gas Property | Nov 2024 |
| 5309 | WINTERS | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5310 | WIRKNER-VANCE | Weld County, CO | Oil & Gas Property | Jan 2025 |
| 5311 | WIRT | La Plata County, CO | Gas Property | Feb 2025 |
| 5312 | WIRT | La Plata County, CO | Gas Property | Feb 2025 |
| 5313 | WIRTH | Morgan County, CO | Oil & Gas Property | Oct 2004 |
| 5314 | WISE | Boulder County, CO | Oil & Gas Property | Jun 2022 |
| 5315 | WISHBONE | Weld County, CO | Oil & Gas Property | Jan 2025 |
| 5316 | WITHAM | Washington County, CO | Oil Property | Aug 2007 |
| 5317 | WITT | La Plata County, CO | Gas Property | Feb 2025 |
| 5318 | WITTE | Yuma County, CO | Gas Property | Feb 2025 |
| 5319 | WITTE | Yuma County, CO | Gas Property | Feb 2025 |
| 5320 | WITTENBERG | Washington County, CO | Oil Property | Dec 2024 |
| 5321 | WOLF | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5322 | WOLF | Weld County, CO | Oil & Gas Property | May 2019 |
| 5323 | WOLFE | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 5324 | WOLFE | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 5325 | WOLFE 33-7-22 | La Plata County, CO | Gas Property | Jan 2025 |
| 5326 | WOLFPACK | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5327 | WOLFSON | Weld County, CO | Oil & Gas Property | Sep 2024 |
| 5328 | WOLLERT | Bent County, CO | Oil & Gas Property | Jan 2025 |
| 5329 | WOMMER A | La Plata County, CO | Gas Property | Feb 2025 |
| 5330 | WOOD | Las Animas County, CO | Gas Property | Feb 2025 |
| 5331 | WOODS-SPANGLER | Mesa County, CO | Oil & Gas Property | Jan 2025 |
| 5332 | WOOLERY ROUNDTREE | Yuma County, CO | Oil & Gas Property | Feb 2025 |
| 5333 | WOOLLEY | Weld County, CO | Oil & Gas Property | Jan 2025 |
| 5334 | WOOLLEY BECKY 2 | Weld County, CO | Oil & Gas Property | Jan 2025 |
| 5335 | WORFORD GAS UNIT | La Plata County, CO | Gas Property | Jan 2025 |
| 5336 | WORLEY | Phillips County, CO | Gas Property | Aug 2022 |
| 5337 | WORRIES | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5338 | WP D0 | Logan County, CO | Oil & Gas Property | Jul 2010 |
| 5339 | WP- M00 | Logan County, CO | Oil & Gas Property | Jul 2010 |
| 5340 | WPF III | Weld County, CO | Oil & Gas Property | Oct 2017 |
| 5341 | WPX ENERGY GM | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5342 | WPX ENERGY PA | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5343 | WPX ENERGY R | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5344 | WPX GM | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5345 | WRD FEDERAL | Rio Blanco County, CO | Oil & Gas Property | Mar 2024 |
| 5346 | WRD UNIT | Rio Blanco County, CO | Oil & Gas Property | Feb 2024 |
| 5347 | WRD WYATT | Rio Blanco County, CO | Oil & Gas Property | Feb 2024 |
| 5348 | WRIGHT | Washington County, CO | Oil & Gas Property | Feb 2025 |
| 5349 | WRIGHT | La Plata County, CO | Gas Property | Feb 2025 |
| 5350 | WRIGHT | Washington County, CO | Oil Property | Jan 2025 |
| 5351 | WRIGHT 33-5 | Archuleta County, CO | Gas Property | Feb 2025 |
| 5352 | WRIGHT, CASTEEL AND SMALLWOOD SG | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5353 | WRIGHT,SMALLWOOD CASTEEL SG | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5354 | WRITEBOL | Logan County, CO | Oil & Gas Property | Jan 2025 |
| 5355 | WS-SANITATION | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5356 | WS-SUNRISE | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5357 | WUERTZ 12 | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5358 | WYMAN | Adams County, CO | Oil & Gas Property | Feb 2019 |
| 5359 | WYSCAVER | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 5360 | XAVIER | La Plata County, CO | Gas Property | Feb 2025 |
| 5361 | XCEL | Weld County, CO | Oil & Gas Property | Jan 2025 |
| 5362 | XCEL | Weld County, CO | Oil & Gas Property | Aug 2019 |
| 5363 | XENIA WEST | Washington County, CO | Oil & Gas Property | Jan 2025 |
| 5364 | YA 4 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5365 | YA 5 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5366 | YA 6 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5367 | YA 7 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5368 | YA 8 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5369 | YAKLICH | Weld County, CO | Oil & Gas Property | Apr 2018 |
| 5370 | YAKUTAT | Washington County, CO | Gas Property | Aug 2020 |
| 5371 | YAMAGUCHI | Weld County, CO | Oil & Gas Property | May 2020 |
| 5372 | YANKEE FEDERAL | La Plata County, CO | Gas Property | Feb 2025 |
| 5373 | YATER | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5374 | YB 4 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5375 | YC 4 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5376 | YCO 1 | Yuma County, CO | Gas Property | Feb 2025 |
| 5377 | YD 4 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5378 | YE 6 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5379 | YELLOW 3-64 30-2 | Adams County, CO | Oil & Gas Property | Jan 2025 |
| 5380 | YELLOW CREEK | Rio Blanco County, CO | Oil & Gas Property | Jan 2025 |
| 5381 | YELLOW JACKET | Montezuma County, CO | Oil & Gas Property | Jan 2025 |
| 5382 | YELLOWHAMMER | Weld County, CO | Oil & Gas Property | Jan 2025 |
| 5383 | YELLOWSTONE | Lincoln County, CO | Oil & Gas Property | Feb 2025 |
| 5384 | YENTER | Logan County, CO | Oil Property | Dec 2013 |
| 5385 | YENTER | Yuma County, CO | Gas Property | Feb 2025 |
| 5386 | YENTER | Yuma County, CO | Oil & Gas Property | Feb 2025 |
| 5387 | YF 3 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5388 | YG 1 | Montezuma County, CO | Oil & Gas Property | Feb 2025 |
| 5389 | YOCAM | Weld County, CO | Oil & Gas Property | Sep 2021 |
| 5390 | YOUBERG | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5391 | YOUBERG | Garfield County, CO | Oil & Gas Property | Jan 2025 |
| 5392 | YOUNG | Washington County, CO | Gas Property | Feb 2025 |
| 5393 | YOUNG | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 5394 | YOUNG | Washington County, CO | Oil & Gas Property | Jan 2025 |
| 5395 | YOUNG 01N-65W-28 | Weld County, CO | Oil & Gas Property | Dec 2022 |
| 5396 | YOXALL FARMS | Weld County, CO | Oil & Gas Property | Jan 2025 |
| 5397 | YUMA 5 STATE | Yuma County, CO | Gas Property | Feb 2025 |
| 5398 | YUMA COUNTY OIL CO | Yuma County, CO | Gas Property | Feb 2025 |
| 5399 | YWAM | Las Animas County, CO | Gas Property | Feb 2025 |
| 5400 | ZABKA | Weld County, CO | Oil & Gas Property | Apr 2018 |