| 201 | CHURCHILL | Weld County, CO | Oil & Gas Property | May 2026 |
| 202 | CIMARRON | Las Animas County, CO | Gas Property | May 2026 |
| 203 | CINNAMON 6-64 19-7 | Elbert County, CO | Oil & Gas Property | May 2026 |
| 204 | CINNAMON TEAL | Weld County, CO | Oil & Gas Property | May 2026 |
| 205 | CINQUE | Weld County, CO | Oil & Gas Property | Sep 2013 |
| 206 | CIRCLE B 6-66-9-0 | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 207 | CIRCLE B LAND | Garfield County, CO | Oil & Gas Property | May 2026 |
| 208 | CIRCLE RANCH | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 209 | CITADEL 5-64 15-16-1CHZ | Arapahoe County, CO | Oil & Gas Property | Jun 2026 |
| 210 | CITO TRUST | Weld County, CO | Oil & Gas Property | May 2026 |
| 211 | CLAR | Morgan County, CO | Oil & Gas Property | Apr 2023 |
| 212 | CLARK | Washington County, CO | Oil Property | May 2026 |
| 213 | CLARK | Weld County, CO | Oil & Gas Property | May 2026 |
| 214 | CLARK | Weld County, CO | Oil & Gas Property | Oct 2023 |
| 215 | CLARKE | Yuma County, CO | Gas Property | May 2026 |
| 216 | CLARKS LAKE MUDDY | Larimer County, CO | Oil & Gas Property | May 2026 |
| 217 | CLARY | La Plata County, CO | Gas Property | May 2026 |
| 218 | CLAYMON 8 | Phillips County, CO | Gas Property | Sep 2023 |
| 219 | CLC RED W 15 | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 220 | CLELAND 15 | Weld County, CO | Oil & Gas Property | May 2026 |
| 221 | CLEM | Garfield County, CO | Oil & Gas Property | May 2026 |
| 222 | CLEM JR. 15 | Garfield County, CO | Oil & Gas Property | May 2026 |
| 223 | CLEMENT | Weld County, CO | Oil & Gas Property | Nov 2024 |
| 224 | CLEMONS | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 225 | CLETCHER | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 226 | CLEVELAND | Weld County, CO | Oil & Gas Property | May 2026 |
| 227 | CLIFFORD CAUSEY | Adams County, CO | Oil & Gas Property | May 2026 |
| 228 | CLIFFORD L | Weld County, CO | Oil & Gas Property | Mar 2021 |
| 229 | CLINE | Weld County, CO | Oil & Gas Property | May 2026 |
| 230 | CLOUGH | Garfield County, CO | Oil & Gas Property | May 2026 |
| 231 | CLOUGH | Garfield County, CO | Oil & Gas Property | May 2026 |
| 232 | CLOVER 29 | Weld County, CO | Oil & Gas Property | May 2026 |
| 233 | CLOVIS | La Plata County, CO | Gas Property | May 2026 |
| 234 | CO STATE A | Adams County, CO | Oil & Gas Property | May 2018 |
| 235 | COAL CREEK | Weld County, CO | Oil & Gas Property | May 2026 |
| 236 | COALBANK | Weld County, CO | Oil & Gas Property | May 2026 |
| 237 | COALBANK CREEK | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 238 | COALSON A4-6 | Weld County, CO | Oil & Gas Property | May 2026 |
| 239 | COALVIEW G02-6 | Weld County, CO | Oil & Gas Property | May 2026 |
| 240 | COAN | Adams County, CO | Oil & Gas Property | Mar 2026 |
| 241 | COAN | Weld County, CO | Oil & Gas Property | Jan 2026 |
| 242 | COB PARTNERSHIP | Yuma County, CO | Gas Property | Aug 2022 |
| 243 | COBRA | Weld County, CO | Oil & Gas Property | May 2026 |
| 244 | COCHRAN | Weld County, CO | Oil & Gas Property | May 2026 |
| 245 | COCKLEBUR DRAW | San Miguel County, CO | Oil & Gas Property | Jul 2024 |
| 246 | COCKROFT | Weld County, CO | Oil & Gas Property | May 2026 |
| 247 | COCKROFT | Weld County, CO | Oil & Gas Property | Jul 2025 |
| 248 | CODY | Jackson County, CO | Oil Property | May 2026 |
| 249 | CODY D | Weld County, CO | Oil & Gas Property | Mar 2022 |
| 250 | COE TRUST | Cheyenne County, CO | Oil & Gas Property | May 2026 |
| 251 | COFFELT 5-61-35 | Weld County, CO | Oil & Gas Property | May 2026 |
| 252 | COGBURN | Baca County, CO | Gas Property | Jan 2008 |
| 253 | COGGINS | Elbert County, CO | Oil & Gas Property | May 2018 |
| 254 | COLAND | Weld County, CO | Oil & Gas Property | Oct 2021 |
| 255 | COLEMAN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 256 | COLFER | Weld County, CO | Oil & Gas Property | May 2026 |
| 257 | COLLINS 18 | Weld County, CO | Oil & Gas Property | May 2026 |
| 258 | COLOHAN | Garfield County, CO | Oil & Gas Property | May 2026 |
| 259 | COLORADO | La Plata County, CO | Gas Property | May 2026 |
| 260 | COLORADO | Morgan County, CO | Oil Property | Nov 2002 |
| 261 | COLORADO | Logan County, CO | Oil Property | Dec 2018 |
| 262 | COLORADO ENERGY FEDERAL 14 | Weld County, CO | Oil Property | Jan 2018 |
| 263 | COLORADO STATE | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 264 | COLORADO STATE | Washington County, CO | Oil Property | Nov 2020 |
| 265 | COLORADO STATE C | Adams County, CO | Oil & Gas Property | Oct 2019 |
| 266 | COLOROSO A | Garfield County, CO | Oil & Gas Property | May 2026 |
| 267 | COLT A13-6 | Weld County, CO | Oil & Gas Property | May 2026 |
| 268 | COLTHARP | Rio Blanco County, CO | Oil & Gas Property | May 2026 |
| 269 | COLUMBINE SP | Garfield County, CO | Oil & Gas Property | Jul 2025 |
| 270 | COLUMBINE SPRINGS FEDERAL | Rio Blanco County, CO | Oil & Gas Property | May 2015 |
| 271 | COMANCHE-FEDERAL | Baca County, CO | Oil & Gas Property | Jul 2002 |
| 272 | COMING 17 | Weld County, CO | Oil & Gas Property | May 2018 |
| 273 | COMMERCE CENTER | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 274 | COMMERCE RANCH | Baca County, CO | Gas Property | Sep 2012 |
| 275 | COMMONS | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 276 | COMMUNITY | Larimer County, CO | Oil Property | Jan 2024 |
| 277 | COMO | Weld County, CO | Oil & Gas Property | May 2026 |
| 278 | CONAGRA B | Weld County, CO | Oil & Gas Property | Aug 2017 |
| 279 | CONLEY | Archuleta County, CO | Gas Property | Apr 2026 |
| 280 | CONNELL | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 281 | CONNER | Weld County, CO | Oil & Gas Property | Oct 2025 |
| 282 | CONNIE 26 | Weld County, CO | Oil & Gas Property | May 2026 |
| 283 | CONOCO | Fremont County, CO | Oil Property | May 2026 |
| 284 | CONOCO FEDERAL | Jackson County, CO | Oil & Gas Property | Jul 2013 |
| 285 | CONOCO-FEDERAL | Jackson County, CO | Oil & Gas Property | May 2026 |
| 286 | CONRAD | Yuma County, CO | Gas Property | May 2026 |
| 287 | CONRAD | La Plata County, CO | Gas Property | May 2026 |
| 288 | CONRAD FEDERAL | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 289 | CONRAD FEDERAL | Yuma County, CO | Gas Property | May 2026 |
| 290 | CONRAD STATE | Yuma County, CO | Gas Property | May 2026 |
| 291 | CONSTITUTION FEDERAL LC21-6 | Weld County, CO | Oil & Gas Property | May 2026 |
| 292 | CONTINENTAL | Rio Blanco County, CO | Oil & Gas Property | Jul 2022 |
| 293 | COOK | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 294 | COOK | Yuma County, CO | Gas Property | May 2026 |
| 295 | COOK | Baca County, CO | Gas Property | May 2026 |
| 296 | COOK | Garfield County, CO | Oil & Gas Property | May 2026 |
| 297 | COOK | Weld County, CO | Oil & Gas Property | May 2026 |
| 298 | COOK R | Garfield County, CO | Oil & Gas Property | May 2026 |
| 299 | COOLEY | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 300 | COOPER 23-1 | Weld County, CO | Oil & Gas Property | Apr 2018 |