| 401 | CINQUE | Weld County, CO | Oil & Gas Property | Sep 2013 |
| 402 | CIRCLE B 6-66-9-0 | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 403 | CIRCLE RANCH | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 404 | CITO TRUST | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 405 | CLARK | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 406 | CLARK | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 407 | CLARK | Weld County, CO | Oil & Gas Property | Oct 2023 |
| 408 | CLC RED W 15 | Weld County, CO | Oil & Gas Property | Nov 2018 |
| 409 | CLELAND 15 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 410 | CLEMENT | Weld County, CO | Oil & Gas Property | Nov 2024 |
| 411 | CLEMONS | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 412 | CLETCHER | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 413 | CLEVELAND | Weld County, CO | Oil & Gas Property | Jan 2026 |
| 414 | CLIFFORD L | Weld County, CO | Oil & Gas Property | Mar 2021 |
| 415 | CLINE | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 416 | CLOVER 29 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 417 | COAL CREEK | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 418 | COALBANK | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 419 | COALBANK CREEK | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 420 | COALSON A4-6 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 421 | COALVIEW G02-6 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 422 | COAN | Weld County, CO | Oil & Gas Property | Jan 2026 |
| 423 | COBRA | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 424 | COCHRAN | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 425 | COCKROFT | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 426 | COCKROFT | Weld County, CO | Oil & Gas Property | Jul 2025 |
| 427 | CODY D | Weld County, CO | Oil & Gas Property | Mar 2022 |
| 428 | COFFELT 5-61-35 | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 429 | COLAND | Weld County, CO | Oil & Gas Property | Oct 2021 |
| 430 | COLEMAN | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 431 | COLFER | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 432 | COLLINS 18 | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 433 | COLORADO ENERGY FEDERAL 14 | Weld County, CO | Oil Property | Jan 2018 |
| 434 | COLORADO STATE | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 435 | COLT A13-6 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 436 | COMING 17 | Weld County, CO | Oil & Gas Property | May 2018 |
| 437 | COMMERCE CENTER | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 438 | COMMONS | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 439 | COMO | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 440 | CONAGRA B | Weld County, CO | Oil & Gas Property | Aug 2017 |
| 441 | CONNELL | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 442 | CONNER | Weld County, CO | Oil & Gas Property | Oct 2025 |
| 443 | CONNIE 26 | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 444 | CONRAD FEDERAL | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 445 | COOK | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 446 | COOK | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 447 | COOLEY | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 448 | COOPER 23-1 | Weld County, CO | Oil & Gas Property | Apr 2018 |
| 449 | COORS | Weld County, CO | Oil & Gas Property | Nov 2020 |
| 450 | COORS ENERGY | Weld County, CO | Oil & Gas Property | Apr 2021 |
| 451 | COPPERHEAD 2 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 452 | CORBIN | Weld County, CO | Oil & Gas Property | Dec 2018 |
| 453 | CORNISH | Weld County, CO | Oil & Gas Property | Aug 2025 |
| 454 | COSSLETT | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 455 | COSSLETT | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 456 | COSSLETT EAST FEDERAL 1A-22H-H168 | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 457 | COSSLETT HEIRS UU | Weld County, CO | Oil & Gas Property | Apr 2019 |
| 458 | COSTIGAN | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 459 | COT EAST | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 460 | COT WEST | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 461 | COTTONWOOD | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 462 | COTTONWOOD | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 463 | COUFAL | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 464 | COULSON 2 | Weld County, CO | Oil & Gas Property | Oct 2019 |
| 465 | COUNTER | Weld County, CO | Oil & Gas Property | Oct 2023 |
| 466 | COUNTY LINE 3 | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 467 | COUNTYLINE 0508-1 | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 468 | COURTNEY | Weld County, CO | Oil & Gas Property | Jul 2014 |
| 469 | COWBOY 21 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 470 | COX 1161 | Weld County, CO | Oil & Gas Property | Aug 2020 |
| 471 | COX 5 | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 472 | COYLE | Weld County, CO | Oil & Gas Property | Feb 2024 |
| 473 | COYOTE TRAILS 3 | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 474 | COZZENS | Weld County, CO | Oil & Gas Property | Feb 2026 |
| 475 | CPC-BOHLENDER | Weld County, CO | Oil & Gas Property | Sep 2020 |
| 476 | CRAIG | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 477 | CRAVEN | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 478 | CRAWFORD | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 479 | CREAM | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 480 | CREAM STATE 2 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 481 | CRICKET C22-3 | Weld County, CO | Oil & Gas Property | Sep 2016 |
| 482 | CRITTER CREEK | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 483 | CRITTER CREEK | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 484 | CROISSANT | Weld County, CO | Oil & Gas Property | Feb 2023 |
| 485 | CROISSANT | Weld County, CO | Oil & Gas Property | Feb 2014 |
| 486 | CROISSANT | Weld County, CO | Oil & Gas Property | Oct 2018 |
| 487 | CROW CREEK | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 488 | CROW VALLEY | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 489 | CROWDER | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 490 | CRUICKSHANK | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 491 | CS-KINKADE | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 492 | CS-LONGMEADOW | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 493 | CS-SCOTT | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 494 | CS-SHERWOOD | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 495 | CULBREATH | Weld County, CO | Oil & Gas Property | Mar 2017 |
| 496 | CUMMINGS 19 | Weld County, CO | Oil & Gas Property | Apr 2026 |
| 497 | CURTIS | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 498 | CUTTHROAT LC28-7 | Weld County, CO | Oil & Gas Property | Dec 2025 |
| 499 | CUYKENDALL | Weld County, CO | Oil & Gas Property | Mar 2026 |
| 500 | CUYKENDALL | Weld County, CO | Oil & Gas Property | Feb 2020 |