| 5001 | WITHAM | Washington County, CO | Oil Property | Aug 2007 |
| 5002 | WITT | La Plata County, CO | Gas Property | Mar 2024 |
| 5003 | WITTE | Yuma County, CO | Gas Property | Mar 2024 |
| 5004 | WITTE | Yuma County, CO | Gas Property | Mar 2024 |
| 5005 | WITTENBERG | Washington County, CO | Oil Property | Dec 2023 |
| 5006 | WOLF | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5007 | WOLF | Weld County, CO | Oil & Gas Property | May 2019 |
| 5008 | WOLFE | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 5009 | WOLFE | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 5010 | WOLFE 33-7-22 | La Plata County, CO | Gas Property | Feb 2024 |
| 5011 | WOLFPACK | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5012 | WOLFSON | Weld County, CO | Oil & Gas Property | May 2023 |
| 5013 | WOLLERT | Bent County, CO | Oil & Gas Property | Feb 2024 |
| 5014 | WOMMER A | La Plata County, CO | Gas Property | Mar 2024 |
| 5015 | WOOD | Las Animas County, CO | Gas Property | Mar 2024 |
| 5016 | WOODS-SPANGLER | Mesa County, CO | Oil & Gas Property | Feb 2024 |
| 5017 | WOOLERY-ROUNDTREE | Yuma County, CO | Oil & Gas Property | Mar 2024 |
| 5018 | WOOLLEY | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5019 | WOOLLEY BECKY 2 | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5020 | WORFORD GAS UNIT | La Plata County, CO | Gas Property | Feb 2024 |
| 5021 | WORLEY | Phillips County, CO | Gas Property | Aug 2022 |
| 5022 | WORRIES | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5023 | WPF III | Weld County, CO | Oil & Gas Property | Oct 2017 |
| 5024 | WPX ENERGY GM | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5025 | WPX ENERGY PA | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5026 | WPX ENERGY R | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5027 | WPX GM | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5028 | WRD FEDERAL | Rio Blanco County, CO | Oil & Gas Property | Mar 2024 |
| 5029 | WRD UNIT | Rio Blanco County, CO | Oil & Gas Property | Feb 2024 |
| 5030 | WRD WYATT | Rio Blanco County, CO | Oil & Gas Property | Feb 2024 |
| 5031 | WRIGHT | Washington County, CO | Oil & Gas Property | Mar 2024 |
| 5032 | WRIGHT | Washington County, CO | Oil Property | Mar 2024 |
| 5033 | WRIGHT 33-5 | Archuleta County, CO | Gas Property | Mar 2024 |
| 5034 | WRIGHT, CASTEEL AND SMALLWOOD SG | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5035 | WRIGHT,SMALLWOOD CASTEEL SG | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5036 | WRITEBOL | Logan County, CO | Oil & Gas Property | Feb 2024 |
| 5037 | WS-MAGNOLIA 3-5-5 | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5038 | WS-SANITATION | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5039 | WS-SUNRISE | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5040 | WUERTZ 12 | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5041 | WYMAN | Adams County, CO | Oil & Gas Property | Feb 2018 |
| 5042 | WYSCAVER | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 5043 | XAVIER | La Plata County, CO | Gas Property | Mar 2024 |
| 5044 | XCEL | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5045 | XCEL | Weld County, CO | Oil & Gas Property | Aug 2019 |
| 5046 | XENIA WEST | Washington County, CO | Oil & Gas Property | Feb 2024 |
| 5047 | YA 4 | Montezuma County, CO | Oil & Gas Property | Apr 2024 |
| 5048 | YA 5 | Montezuma County, CO | Oil & Gas Property | Apr 2024 |
| 5049 | YA 6 | Montezuma County, CO | Oil & Gas Property | Apr 2024 |
| 5050 | YAKLICH | Weld County, CO | Oil & Gas Property | Apr 2018 |
| 5051 | YAMAGUCHI | Weld County, CO | Oil & Gas Property | May 2020 |
| 5052 | YANKEE FEDERAL | La Plata County, CO | Gas Property | Mar 2024 |
| 5053 | YATER | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5054 | YB 4 | Montezuma County, CO | Oil & Gas Property | Apr 2024 |
| 5055 | YC 4 | Montezuma County, CO | Oil & Gas Property | Apr 2024 |
| 5056 | YCO 1 | Yuma County, CO | Gas Property | Mar 2024 |
| 5057 | YD 4 | Montezuma County, CO | Oil & Gas Property | Apr 2024 |
| 5058 | YELLOW 3-64 30-2 | Adams County, CO | Oil & Gas Property | Mar 2024 |
| 5059 | YELLOW CREEK | Rio Blanco County, CO | Oil & Gas Property | Mar 2024 |
| 5060 | YELLOWHAMMER | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5061 | YELLOWSTONE | Lincoln County, CO | Oil & Gas Property | Mar 2024 |
| 5062 | YENTER | Logan County, CO | Oil Property | Dec 2013 |
| 5063 | YENTER | Yuma County, CO | Gas Property | Mar 2024 |
| 5064 | YENTER | Yuma County, CO | Oil & Gas Property | Mar 2024 |
| 5065 | YF 3 | Montezuma County, CO | Oil & Gas Property | Apr 2024 |
| 5066 | YOCAM | Weld County, CO | Oil & Gas Property | Sep 2021 |
| 5067 | YOUBERG | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5068 | YOUBERG | Garfield County, CO | Oil & Gas Property | Mar 2024 |
| 5069 | YOUNG | Washington County, CO | Gas Property | Mar 2024 |
| 5070 | YOUNG | Weld County, CO | Oil & Gas Property | May 2022 |
| 5071 | YOUNG | Washington County, CO | Oil & Gas Property | Mar 2024 |
| 5072 | YOUNG 01N-65W-28 | Weld County, CO | Oil & Gas Property | Dec 2022 |
| 5073 | YOXALL FARMS | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5074 | YUMA 5 STATE | Yuma County, CO | Gas Property | Mar 2024 |
| 5075 | YUMA COUNTY OIL CO | Yuma County, CO | Gas Property | Mar 2024 |
| 5076 | YWAM | Las Animas County, CO | Gas Property | Mar 2024 |
| 5077 | ZABKA | Weld County, CO | Oil & Gas Property | Apr 2018 |
| 5078 | ZABKA K 2 | Weld County, CO | Oil & Gas Property | Dec 2020 |
| 5079 | ZACH C 11 | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 5080 | ZADEL | Weld County, CO | Oil & Gas Property | Nov 2023 |
| 5081 | ZAHOUREK | Weld County, CO | Oil & Gas Property | Feb 2019 |
| 5082 | ZARLENGO | Adams County, CO | Oil & Gas Property | Mar 2024 |
| 5083 | ZARLENGO | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 5084 | ZEEK | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 5085 | ZEILER | Weld County, CO | Oil & Gas Property | Aug 2023 |
| 5086 | ZELDA 25 | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5087 | ZELLITTI | La Plata County, CO | Gas Property | Mar 2024 |
| 5088 | ZIEGLER | Logan County, CO | Oil & Gas Property | Feb 2024 |
| 5089 | ZIEMER | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5090 | ZIGGY USX AB 19-99HZ | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5091 | ZIMMERMAN | Weld County, CO | Oil & Gas Property | Feb 2022 |
| 5092 | ZIMMERMAN 33 | Garfield County, CO | Oil & Gas Property | Jan 2024 |
| 5093 | ZIMMERMAN/CHAMBERLIN 1 | Moffat County, CO | Oil & Gas Property | Mar 2024 |
| 5094 | ZION | Yuma County, CO | Gas Property | Mar 2024 |
| 5095 | ZISCH | Weld County, CO | Oil & Gas Property | Mar 2024 |
| 5096 | ZUEGE | Yuma County, CO | Gas Property | Mar 2024 |
| 5097 | ZUKOWSKI 17 1H | Arapahoe County, CO | Oil & Gas Property | Mar 2024 |
| 5098 | ZWIRN | Yuma County, CO | Gas Property | Mar 2024 |
| 5099 | ZWIRN | Yuma County, CO | Gas Property | Mar 2024 |