| 5201 | WRIGHT 33-5 | Archuleta County, CO | Gas Property | May 2026 |
| 5202 | WRIGHT, CASTEEL AND SMALLWOOD SG | Garfield County, CO | Oil & Gas Property | May 2026 |
| 5203 | WRIGHT,SMALLWOOD CASTEEL SG | Garfield County, CO | Oil & Gas Property | May 2026 |
| 5204 | WRITEBOL | Logan County, CO | Oil & Gas Property | May 2026 |
| 5205 | WS-SUNRISE | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 5206 | WUERTZ 12 | Weld County, CO | Oil & Gas Property | May 2026 |
| 5207 | WYMAN | Adams County, CO | Oil & Gas Property | Jan 2019 |
| 5208 | WYSCAVER | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 5209 | XAVIER | La Plata County, CO | Gas Property | May 2026 |
| 5210 | XCEL | Weld County, CO | Oil & Gas Property | May 2026 |
| 5211 | XCEL | Weld County, CO | Oil & Gas Property | Aug 2019 |
| 5212 | XENIA WEST | Washington County, CO | Oil & Gas Property | May 2026 |
| 5213 | YA 4 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5214 | YA 5 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5215 | YA 6 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5216 | YA 7 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5217 | YAKLICH | Weld County, CO | Oil & Gas Property | Apr 2018 |
| 5218 | YAKUTAT | Washington County, CO | Gas Property | Aug 2020 |
| 5219 | YAMAGUCHI | Weld County, CO | Oil & Gas Property | May 2020 |
| 5220 | YANKEE FEDERAL | La Plata County, CO | Gas Property | May 2026 |
| 5221 | YATER | Garfield County, CO | Oil & Gas Property | May 2026 |
| 5222 | YB 4 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5223 | YC 4 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5224 | YCO 1 | Yuma County, CO | Gas Property | May 2026 |
| 5225 | YD 4 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5226 | YE 6 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5227 | YELLOW 3-64 30-2 | Adams County, CO | Oil & Gas Property | May 2026 |
| 5228 | YELLOW CREEK | Rio Blanco County, CO | Oil & Gas Property | Mar 2026 |
| 5229 | YELLOWHAMMER | Weld County, CO | Oil & Gas Property | May 2026 |
| 5230 | YELLOWSTONE | Lincoln County, CO | Oil & Gas Property | May 2026 |
| 5231 | YENTER | Logan County, CO | Oil Property | Dec 2013 |
| 5232 | YENTER | Yuma County, CO | Gas Property | May 2026 |
| 5233 | YENTER | Yuma County, CO | Oil & Gas Property | May 2026 |
| 5234 | YF 3 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5235 | YG 1 | Montezuma County, CO | Oil & Gas Property | May 2026 |
| 5236 | YOCAM | Weld County, CO | Oil & Gas Property | Sep 2021 |
| 5237 | YOUBERG | Garfield County, CO | Oil & Gas Property | May 2026 |
| 5238 | YOUBERG | Garfield County, CO | Oil & Gas Property | May 2026 |
| 5239 | YOUNG | Washington County, CO | Gas Property | May 2026 |
| 5240 | YOUNG | Weld County, CO | Oil & Gas Property | Apr 2023 |
| 5241 | YOUNG | Washington County, CO | Oil & Gas Property | Apr 2026 |
| 5242 | YOUNG 01N-65W-28 | Weld County, CO | Oil & Gas Property | Dec 2022 |
| 5243 | YOUNGBERG 10-11 1H | Arapahoe County, CO | Oil & Gas Property | May 2026 |
| 5244 | YOXALL FARMS | Weld County, CO | Oil & Gas Property | May 2026 |
| 5245 | YUMA 5 STATE | Yuma County, CO | Gas Property | May 2026 |
| 5246 | YUMA COUNTY OIL CO | Yuma County, CO | Gas Property | May 2026 |
| 5247 | YWAM | Las Animas County, CO | Gas Property | May 2026 |
| 5248 | ZABKA | Weld County, CO | Oil & Gas Property | Apr 2018 |
| 5249 | ZABKA K 2 | Weld County, CO | Oil & Gas Property | Dec 2020 |
| 5250 | ZACH C 11 | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 5251 | ZADEL | Weld County, CO | Oil & Gas Property | Nov 2023 |
| 5252 | ZAHOUREK | Weld County, CO | Oil & Gas Property | Feb 2019 |
| 5253 | ZARLENGO | Adams County, CO | Oil & Gas Property | May 2026 |
| 5254 | ZARLENGO | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 5255 | ZEEK | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 5256 | ZEILER | Weld County, CO | Oil & Gas Property | Aug 2023 |
| 5257 | ZELDA 25 | Weld County, CO | Oil & Gas Property | May 2026 |
| 5258 | ZELLITTI | La Plata County, CO | Gas Property | May 2026 |
| 5259 | ZIEGLER | Logan County, CO | Oil & Gas Property | May 2026 |
| 5260 | ZIEMER | Weld County, CO | Oil & Gas Property | May 2026 |
| 5261 | ZIGGY USX AB 19-99HZ | Weld County, CO | Oil & Gas Property | May 2026 |
| 5262 | ZIMMERMAN | Weld County, CO | Oil & Gas Property | Mar 2021 |
| 5263 | ZIMMERMAN 33 | Garfield County, CO | Oil & Gas Property | May 2026 |
| 5264 | ZIMMERMAN/CHAMBERLIN 1 | Moffat County, CO | Oil & Gas Property | May 2026 |
| 5265 | ZION | Yuma County, CO | Gas Property | May 2026 |
| 5266 | ZISCH | Weld County, CO | Oil & Gas Property | May 2026 |
| 5267 | ZUEGE | Yuma County, CO | Gas Property | May 2026 |
| 5268 | ZWIRN | Yuma County, CO | Gas Property | May 2026 |
| 5269 | ZWIRN | Yuma County, CO | Gas Property | May 2026 |