| 801 | CHEVRON/TEXACO | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 802 | CHICA | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 803 | CHICO 4-65 2 | Arapahoe County, CO | Oil & Gas Property | Feb 2026 |
| 804 | CHIKUMA | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 805 | CHISMAR | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 806 | CHIVE 2536-1 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 807 | CHRISTENSON | Weld County, CO | Oil & Gas Property | Jan 2022 |
| 808 | CHRISTIANSEN | Adams County, CO | Oil & Gas Property | May 2018 |
| 809 | CHRISTIANSEN | Weld County, CO | Oil & Gas Property | Mar 2020 |
| 810 | CHRISTIANSEN | Weld County, CO | Oil & Gas Property | Jan 2017 |
| 811 | CHRISTIANSON | Washington County, CO | Gas Property | Mar 2026 |
| 812 | CHRISTIANSON | Washington County, CO | Oil & Gas Property | Mar 2026 |
| 813 | CHRISTINE LC27-7 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 814 | CHRISTNER 8 | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 815 | CHRISTOPHER | Cheyenne County, CO | Oil & Gas Property | Mar 2026 |
| 816 | CHURCH | Washington County, CO | Oil & Gas Property | Mar 2026 |
| 817 | CHURCHILL | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 818 | CIMARRON | Las Animas County, CO | Gas Property | Mar 2026 |
| 819 | CINNAMON 6-64 19-7 | Elbert County, CO | Oil & Gas Property | Mar 2026 |
| 820 | CINNAMON TEAL | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 821 | CINQUE | Weld County, CO | Oil & Gas Property | Sep 2013 |
| 822 | CIRCLE B 6-66-9-0 | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 823 | CIRCLE B LAND | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 824 | CIRCLE RANCH | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 825 | CITADEL 5-64 15-16-1CHZ | Arapahoe County, CO | Oil & Gas Property | Mar 2026 |
| 826 | CITO TRUST | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 827 | CLAR | Morgan County, CO | Oil & Gas Property | Apr 2023 |
| 828 | CLARK | Washington County, CO | Oil Property | Feb 2026 |
| 829 | CLARK | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 830 | CLARK | Weld County, CO | Oil & Gas Property | Oct 2023 |
| 831 | CLARK 7 | La Plata County, CO | Gas Property | Feb 2026 |
| 832 | CLARKE | Yuma County, CO | Gas Property | Feb 2026 |
| 833 | CLARKS LAKE MUDDY | Larimer County, CO | Oil & Gas Property | Mar 2026 |
| 834 | CLAYMON 8 | Phillips County, CO | Gas Property | Sep 2023 |
| 835 | CLC RED W 15 | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 836 | CLELAND 15 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 837 | CLEM | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 838 | CLEM JR. 15 | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 839 | CLEMENT | Weld County, CO | Oil & Gas Property | Nov 2024 |
| 840 | CLEMONS | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 841 | CLETCHER | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 842 | CLEVELAND | Weld County, CO | Oil & Gas Property | Jan 2026 |
| 843 | CLIFFORD CAUSEY | Adams County, CO | Oil & Gas Property | Mar 2026 |
| 844 | CLIFFORD L | Weld County, CO | Oil & Gas Property | Mar 2021 |
| 845 | CLINE | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 846 | CLOUGH | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 847 | CLOUGH | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 848 | CLOVER 29 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 849 | CLOVIS | La Plata County, CO | Gas Property | Feb 2026 |
| 850 | CO STATE A | Adams County, CO | Oil & Gas Property | May 2018 |
| 851 | COAL CREEK | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 852 | COALBANK | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 853 | COALBANK CREEK | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 854 | COALSON A4-6 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 855 | COALVIEW G02-6 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 856 | COAN | Adams County, CO | Oil & Gas Property | Feb 2026 |
| 857 | COAN | Weld County, CO | Oil & Gas Property | Jan 2026 |
| 858 | COB PARTNERSHIP | Yuma County, CO | Gas Property | Aug 2022 |
| 859 | COBRA | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 860 | COCHRAN | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 861 | COCKLEBUR DRAW | San Miguel County, CO | Oil & Gas Property | Jul 2024 |
| 862 | COCKROFT | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 863 | COCKROFT | Weld County, CO | Oil & Gas Property | Jul 2025 |
| 864 | CODY | Jackson County, CO | Oil Property | Feb 2026 |
| 865 | CODY D | Weld County, CO | Oil & Gas Property | Mar 2022 |
| 866 | COE TRUST | Cheyenne County, CO | Oil & Gas Property | Feb 2026 |
| 867 | COFFELT 5-61-35 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 868 | COGBURN | Baca County, CO | Gas Property | Jan 2008 |
| 869 | COGGINS | Elbert County, CO | Oil & Gas Property | May 2018 |
| 870 | COLAND | Weld County, CO | Oil & Gas Property | Oct 2021 |
| 871 | COLEMAN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 872 | COLFER | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 873 | COLLINS 18 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 874 | COLOHAN | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 875 | COLORADO | La Plata County, CO | Gas Property | Feb 2026 |
| 876 | COLORADO | Morgan County, CO | Oil Property | Nov 2002 |
| 877 | COLORADO | Logan County, CO | Oil Property | Dec 2018 |
| 878 | COLORADO ENERGY FEDERAL 14 | Weld County, CO | Oil Property | Jan 2018 |
| 879 | COLORADO STATE | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 880 | COLORADO STATE | Washington County, CO | Oil Property | Nov 2020 |
| 881 | COLORADO STATE C | Adams County, CO | Oil & Gas Property | Oct 2019 |
| 882 | COLOROSO A | Garfield County, CO | Oil & Gas Property | Feb 2026 |
| 883 | COLT A13-6 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 884 | COLTHARP | Rio Blanco County, CO | Oil & Gas Property | Feb 2026 |
| 885 | COLUMBINE SP | Garfield County, CO | Oil & Gas Property | Jul 2025 |
| 886 | COLUMBINE SPRINGS FEDERAL | Rio Blanco County, CO | Oil & Gas Property | May 2015 |
| 887 | COMANCHE-FEDERAL | Baca County, CO | Oil & Gas Property | Jul 2002 |
| 888 | COMING 17 | Weld County, CO | Oil & Gas Property | May 2018 |
| 889 | COMMERCE CENTER | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 890 | COMMERCE RANCH | Baca County, CO | Gas Property | Sep 2012 |
| 891 | COMMONS | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 892 | COMMUNITY | Larimer County, CO | Oil Property | Jan 2024 |
| 893 | COMO | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 894 | CONAGRA B | Weld County, CO | Oil & Gas Property | Aug 2017 |
| 895 | CONLEY | Archuleta County, CO | Gas Property | Feb 2026 |
| 896 | CONNELL | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 897 | CONNER | Weld County, CO | Oil & Gas Property | Oct 2025 |
| 898 | CONNIE 26 | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 899 | CONOCO | Fremont County, CO | Oil Property | Mar 2026 |
| 900 | CONOCO FEDERAL | Jackson County, CO | Oil & Gas Property | Jul 2013 |