| 1001 | CONNIE 26 | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1002 | CONOCO | Fremont County, CO | Oil Property | Dec 2025 |
| 1003 | CONOCO FEDERAL | Jackson County, CO | Oil & Gas Property | Jul 2013 |
| 1004 | CONOCO-FEDERAL | Jackson County, CO | Oil & Gas Property | Nov 2025 |
| 1005 | CONQUEST 41-28 | Las Animas County, CO | Gas Property | Dec 2025 |
| 1006 | CONRAD | La Plata County, CO | Gas Property | Nov 2025 |
| 1007 | CONRAD | Yuma County, CO | Gas Property | Nov 2025 |
| 1008 | CONRAD FEDERAL | Yuma County, CO | Gas Property | Nov 2025 |
| 1009 | CONRAD FEDERAL | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 1010 | CONRAD STATE | Yuma County, CO | Gas Property | Nov 2025 |
| 1011 | CONSTITUTION FEDERAL LC21-6 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1012 | CONTINENTAL | Rio Blanco County, CO | Oil & Gas Property | Jul 2022 |
| 1013 | COOK | Yuma County, CO | Gas Property | Nov 2025 |
| 1014 | COOK | Baca County, CO | Gas Property | Sep 2025 |
| 1015 | COOK | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 1016 | COOK | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1017 | COOK | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1018 | COOK CARPENTER 20-3 | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1019 | COOK EXXON | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1020 | COOK GARDNER 20-4 | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1021 | COOK MARTIN 20-1 | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1022 | COOK R | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1023 | COOLEY | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 1024 | COOPER 23-1 | Weld County, CO | Oil & Gas Property | Apr 2018 |
| 1025 | COORDES | Adams County, CO | Oil & Gas Property | Nov 2022 |
| 1026 | COORS | Weld County, CO | Oil & Gas Property | Nov 2020 |
| 1027 | COORS | Rio Blanco County, CO | Oil & Gas Property | Jul 2022 |
| 1028 | COORS ENERGY | Weld County, CO | Oil & Gas Property | Apr 2021 |
| 1029 | COPPERHEAD 2 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1030 | CORBIN | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 1031 | CORNISH | Weld County, CO | Oil & Gas Property | Aug 2025 |
| 1032 | CORRAL CREEK | Rio Blanco County, CO | Oil & Gas Property | Nov 2025 |
| 1033 | CORY JACK 33-7-11 2 | La Plata County, CO | Gas Property | Dec 2025 |
| 1034 | COSSLETT | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1035 | COSSLETT | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1036 | COSSLETT EAST FEDERAL 1A-22H-H168 | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1037 | COSSLETT HEIRS UU | Weld County, CO | Oil & Gas Property | Sep 2019 |
| 1038 | COSTELLO 44-24 | Las Animas County, CO | Gas Property | Dec 2025 |
| 1039 | COSTIGAN | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 1040 | COSWORTH FEDERAL 31-23 | Las Animas County, CO | Gas Property | Dec 2025 |
| 1041 | COT EAST | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1042 | COT WEST | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1043 | COTNER 35-14 | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1044 | COTTONTAIL PASS UNIT 34-24 | Las Animas County, CO | Gas Property | Dec 2025 |
| 1045 | COTTONWOOD | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 1046 | COTTONWOOD | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 1047 | COTTONWOOD CREEK 4-65 2 | Arapahoe County, CO | Oil & Gas Property | Nov 2025 |
| 1048 | COTTONWOOD GULCH | Moffat County, CO | Oil & Gas Property | Apr 2025 |
| 1049 | COUCH 01-16U | La Plata County, CO | Gas Property | Nov 2025 |
| 1050 | COUEY | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1051 | COUEY FEDERAL | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1052 | COUFAL | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 1053 | COUGAR B 02-6 | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1054 | COULSON 2 | Weld County, CO | Oil & Gas Property | Oct 2019 |
| 1055 | COUNTER | Weld County, CO | Oil & Gas Property | Oct 2023 |
| 1056 | COUNTY LINE 3 | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1057 | COUNTYLINE 0508-1 | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1058 | COURTNEY | Weld County, CO | Oil & Gas Property | Jul 2014 |
| 1059 | COURY 18 | Mesa County, CO | Oil & Gas Property | Apr 2005 |
| 1060 | COVEY 33-7-10 | La Plata County, CO | Gas Property | Nov 2025 |
| 1061 | COW SKULL 11-89-18 | Gunnison County, CO | Gas Property | Dec 2025 |
| 1062 | COWBOY 21 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1063 | COWLES | Washington County, CO | Oil Property | Nov 2025 |
| 1064 | COX 1 | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1065 | COX 1161 | Weld County, CO | Oil & Gas Property | Aug 2020 |
| 1066 | COX 2 | Archuleta County, CO | Gas Property | Dec 2025 |
| 1067 | COX 33 | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1068 | COX 34 | Yuma County, CO | Gas Property | Nov 2025 |
| 1069 | COX 5 | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1070 | COX CANYON | La Plata County, CO | Gas Property | Oct 2016 |
| 1071 | COX S | Cheyenne County, CO | Gas Property | Nov 2004 |
| 1072 | COYLE | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 1073 | COYOTE FED 0397-14 | Moffat County, CO | Oil & Gas Property | Nov 2025 |
| 1074 | COYOTE TRAILS 3 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1075 | COZZENS | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1076 | CPC-BOHLENDER | Weld County, CO | Oil & Gas Property | Sep 2020 |
| 1077 | CRADER | La Plata County, CO | Gas Property | Nov 2025 |
| 1078 | CRAIG | Garfield County, CO | Oil & Gas Property | Dec 2025 |
| 1079 | CRAIG | La Plata County, CO | Gas Property | Nov 2025 |
| 1080 | CRAIG | Lincoln County, CO | Oil & Gas Property | Nov 2025 |
| 1081 | CRAIG | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1082 | CRANDELL | Broomfield County, CO | Oil & Gas Property | Nov 2025 |
| 1083 | CRANMER | Yuma County, CO | Gas Property | Nov 2025 |
| 1084 | CRAVEN | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1085 | CRAWFORD | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1086 | CREAM | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1087 | CREAM STATE 2 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 1088 | CREEK 29-01 | La Plata County, CO | Gas Property | Nov 2025 |
| 1089 | CRICKET C22-3 | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 1090 | CRIEGLER | La Plata County, CO | Gas Property | Nov 2025 |
| 1091 | CRIGLER MVRD UNIT 1 | La Plata County, CO | Gas Property | Nov 2025 |
| 1092 | CRISWELL | Washington County, CO | Oil & Gas Property | Sep 2014 |
| 1093 | CRITTER CREEK | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1094 | CRITTER CREEK | Weld County, CO | Oil & Gas Property | Nov 2025 |
| 1095 | CROC 42-9 | Las Animas County, CO | Gas Property | Dec 2025 |
| 1096 | CROISSANT | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 1097 | CROISSANT | Weld County, CO | Oil & Gas Property | Feb 2014 |
| 1098 | CROISSANT | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 1099 | CRONE | Morgan County, CO | Oil & Gas Property | May 2021 |
| 1100 | CRONK 1 | Washington County, CO | Oil Property | Jun 2025 |