| 801 | CHEROKEE & PITTSBURG | Fremont County, CO | Oil Property | Jul 2014 |
| 802 | CHESNEE | Cheyenne County, CO | Oil Property | Apr 2025 |
| 803 | CHESNUT | Weld County, CO | Oil & Gas Property | May 2025 |
| 804 | CHESNUT G 22 | Weld County, CO | Oil & Gas Property | Mar 2017 |
| 805 | CHEVERON | Garfield County, CO | Oil & Gas Property | May 2025 |
| 806 | CHEVRON | Garfield County, CO | Oil & Gas Property | May 2025 |
| 807 | CHEVRON | Garfield County, CO | Oil & Gas Property | May 2025 |
| 808 | CHEVRON | Garfield County, CO | Oil & Gas Property | May 2025 |
| 809 | CHEVRON | Rio Blanco County, CO | Oil & Gas Property | May 2025 |
| 810 | CHEVRON-MARATHON | Garfield County, CO | Oil & Gas Property | May 2025 |
| 811 | CHEVRON/TEXACO | Garfield County, CO | Oil & Gas Property | May 2025 |
| 812 | CHICA | Weld County, CO | Oil & Gas Property | May 2025 |
| 813 | CHICO 4-65 2 | Arapahoe County, CO | Oil & Gas Property | May 2025 |
| 814 | CHIKUMA | Weld County, CO | Oil & Gas Property | Jan 2024 |
| 815 | CHISMAR | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 816 | CHIVE 2536-1 | Weld County, CO | Oil & Gas Property | May 2025 |
| 817 | CHRISTENSON | Weld County, CO | Oil & Gas Property | Jan 2022 |
| 818 | CHRISTIANSEN | Weld County, CO | Oil & Gas Property | Mar 2020 |
| 819 | CHRISTIANSEN | Adams County, CO | Oil & Gas Property | May 2018 |
| 820 | CHRISTIANSEN | Weld County, CO | Oil & Gas Property | Jan 2017 |
| 821 | CHRISTIANSON | Washington County, CO | Oil & Gas Property | Jun 2025 |
| 822 | CHRISTIANSON | Washington County, CO | Gas Property | Jun 2025 |
| 823 | CHRISTINE LC27-7 | Weld County, CO | Oil & Gas Property | May 2025 |
| 824 | CHRISTNER 8 | Garfield County, CO | Oil & Gas Property | May 2025 |
| 825 | CHRISTOPHER | Cheyenne County, CO | Oil & Gas Property | May 2025 |
| 826 | CHURCH | Washington County, CO | Oil & Gas Property | Jun 2025 |
| 827 | CHURCHILL | Weld County, CO | Oil & Gas Property | May 2025 |
| 828 | CIMARRON | Las Animas County, CO | Gas Property | Jun 2025 |
| 829 | CINNAMON 6-64 19-7 | Elbert County, CO | Oil & Gas Property | May 2025 |
| 830 | CINNAMON TEAL | Weld County, CO | Oil & Gas Property | May 2025 |
| 831 | CINQUE | Weld County, CO | Oil & Gas Property | Sep 2013 |
| 832 | CIRCLE B 6-66-9-0 | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 833 | CIRCLE B LAND | Garfield County, CO | Oil & Gas Property | May 2025 |
| 834 | CIRCLE RANCH | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 835 | CITADEL 5-64 15-16-1CHZ | Arapahoe County, CO | Oil & Gas Property | Jun 2025 |
| 836 | CITO TRUST | Weld County, CO | Oil & Gas Property | May 2025 |
| 837 | CLAR | Morgan County, CO | Oil & Gas Property | Apr 2023 |
| 838 | CLARK | Weld County, CO | Oil & Gas Property | Oct 2023 |
| 839 | CLARK | Washington County, CO | Oil Property | May 2025 |
| 840 | CLARK | Weld County, CO | Oil & Gas Property | May 2025 |
| 841 | CLARK | Weld County, CO | Oil & Gas Property | May 2025 |
| 842 | CLARK 7 | La Plata County, CO | Gas Property | May 2025 |
| 843 | CLARKE | Yuma County, CO | Gas Property | May 2025 |
| 844 | CLARKS LAKE MUDDY | Larimer County, CO | Oil Property | May 2025 |
| 845 | CLARY | La Plata County, CO | Gas Property | May 2025 |
| 846 | CLAYMON 8 | Phillips County, CO | Gas Property | Sep 2023 |
| 847 | CLC RED W 15 | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 848 | CLELAND 15 | Weld County, CO | Oil & Gas Property | May 2025 |
| 849 | CLEM | Garfield County, CO | Oil & Gas Property | May 2025 |
| 850 | CLEM JR. 15 | Garfield County, CO | Oil & Gas Property | May 2025 |
| 851 | CLEMENT | Weld County, CO | Oil & Gas Property | Oct 2024 |
| 852 | CLEMONS | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 853 | CLETCHER | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 854 | CLEVELAND | Weld County, CO | Oil & Gas Property | May 2025 |
| 855 | CLIFFORD CAUSEY | Adams County, CO | Oil & Gas Property | May 2025 |
| 856 | CLIFFORD L | Weld County, CO | Oil & Gas Property | Mar 2021 |
| 857 | CLINE | Weld County, CO | Oil & Gas Property | May 2025 |
| 858 | CLOUGH | Garfield County, CO | Oil & Gas Property | May 2025 |
| 859 | CLOUGH | Garfield County, CO | Oil & Gas Property | May 2025 |
| 860 | CLOVER 29 | Weld County, CO | Oil & Gas Property | May 2025 |
| 861 | CLOVIS | La Plata County, CO | Gas Property | May 2025 |
| 862 | CO STATE A | Adams County, CO | Oil & Gas Property | May 2018 |
| 863 | COAL CREEK | Weld County, CO | Oil & Gas Property | May 2025 |
| 864 | COALBANK CREEK | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 865 | COALVIEW G02-6 | Weld County, CO | Oil & Gas Property | May 2025 |
| 866 | COAN | Weld County, CO | Oil & Gas Property | Aug 2024 |
| 867 | COAN | Adams County, CO | Oil & Gas Property | May 2025 |
| 868 | COB PARTNERSHIP | Yuma County, CO | Gas Property | Aug 2022 |
| 869 | COBRA | Weld County, CO | Oil & Gas Property | May 2025 |
| 870 | COCHRAN | Weld County, CO | Oil & Gas Property | May 2025 |
| 871 | COCKLEBUR DRAW | San Miguel County, CO | Oil & Gas Property | Jul 2024 |
| 872 | COCKROFT | Weld County, CO | Oil & Gas Property | May 2025 |
| 873 | COCKROFT | Weld County, CO | Oil & Gas Property | May 2025 |
| 874 | CODY | Jackson County, CO | Oil Property | May 2025 |
| 875 | CODY D | Weld County, CO | Oil & Gas Property | Mar 2022 |
| 876 | COE TRUST | Cheyenne County, CO | Oil & Gas Property | May 2025 |
| 877 | COFFELT 5-61-35 | Weld County, CO | Oil & Gas Property | May 2025 |
| 878 | COGBURN | Baca County, CO | Gas Property | Jan 2008 |
| 879 | COGBURN A | La Plata County, CO | Gas Property | May 2025 |
| 880 | COGGINS | Elbert County, CO | Oil & Gas Property | May 2018 |
| 881 | COLAND | Weld County, CO | Oil & Gas Property | Oct 2021 |
| 882 | COLEMAN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 883 | COLFER | Weld County, CO | Oil & Gas Property | May 2025 |
| 884 | COLLINS 18 | Weld County, CO | Oil & Gas Property | May 2025 |
| 885 | COLOHAN | Garfield County, CO | Oil & Gas Property | May 2025 |
| 886 | COLORADO | Morgan County, CO | Oil Property | Nov 2002 |
| 887 | COLORADO | Logan County, CO | Oil Property | Nov 2018 |
| 888 | COLORADO | La Plata County, CO | Gas Property | May 2025 |
| 889 | COLORADO ENERGY FEDERAL 14 | Weld County, CO | Oil Property | Jan 2018 |
| 890 | COLORADO STATE | Washington County, CO | Oil Property | Nov 2020 |
| 891 | COLORADO STATE | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 892 | COLORADO STATE C | Adams County, CO | Oil & Gas Property | Oct 2019 |
| 893 | COLOROSO A | Garfield County, CO | Oil & Gas Property | May 2025 |
| 894 | COLT A13-6 | Weld County, CO | Oil & Gas Property | May 2025 |
| 895 | COLTHARP | Rio Blanco County, CO | Oil & Gas Property | May 2025 |
| 896 | COLUMBINE SP | Garfield County, CO | Oil & Gas Property | May 2025 |
| 897 | COLUMBINE SPRINGS FEDERAL | Rio Blanco County, CO | Oil & Gas Property | May 2015 |
| 898 | COMANCHE-FEDERAL | Baca County, CO | Oil & Gas Property | Jul 2002 |
| 899 | COMING 17 | Weld County, CO | Oil & Gas Property | May 2018 |
| 900 | COMMERCE CENTER | Weld County, CO | Oil & Gas Property | Jun 2019 |