| 3401 | NIELSEN | Archuleta County, CO | Oil & Gas Property | Apr 2024 |
| 3402 | NILES | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3403 | NILES MILLER 20 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3404 | NISHIMOTO | Weld County, CO | Oil & Gas Property | May 2021 |
| 3405 | NLW CONN CREEK | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3406 | NO WORRIES PC G14-6 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3407 | NO. DOUGLAS CREEK-FEDERAL | Rio Blanco County, CO | Oil & Gas Property | Feb 2025 |
| 3408 | NOBLE | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 3409 | NOCKS | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3410 | NOCO ENERGIE | Weld County, CO | Oil & Gas Property | Jan 2021 |
| 3411 | NOCO LC25-7 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3412 | NOFFSINGER | Weld County, CO | Oil & Gas Property | Jan 2023 |
| 3413 | NOFFSINGER | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3414 | NOFFSINGER 35-1 | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 3415 | NOLTE | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3416 | NORCROSS A | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3417 | NORDEN | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3418 | NORDMAN | Elbert County, CO | Oil & Gas Property | Nov 2024 |
| 3419 | NORDSTROM | Broomfield County, CO | Oil & Gas Property | Apr 2020 |
| 3420 | NORGREN | Weld County, CO | Oil & Gas Property | Jul 2019 |
| 3421 | NORRENE | Cheyenne County, CO | Oil & Gas Property | Mar 2025 |
| 3422 | NORRIS | Weld County, CO | Oil & Gas Property | Nov 2020 |
| 3423 | NORRIS | Weld County, CO | Oil & Gas Property | Nov 2020 |
| 3424 | NORTH | Adams County, CO | Oil & Gas Property | Mar 2025 |
| 3425 | NORTH BANK | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3426 | NORTH CAR | Archuleta County, CO | Gas Property | Mar 2025 |
| 3427 | NORTH CAR | Archuleta County, CO | Gas Property | Mar 2025 |
| 3428 | NORTH COLORADO | Adams County, CO | Oil & Gas Property | Sep 2017 |
| 3429 | NORTH DRAGON TRAIL | Rio Blanco County, CO | Gas Property | Mar 2025 |
| 3430 | NORTH FORK RANCH 1 | Las Animas County, CO | Gas Property | Mar 2025 |
| 3431 | NORTH LOST CREEK 1 | Weld County, CO | Oil & Gas Property | Jan 2018 |
| 3432 | NORTH MAIL TRAIL | Montezuma County, CO | Oil & Gas Property | Mar 2025 |
| 3433 | NORTH MINTO JS | Logan County, CO | Oil & Gas Property | Dec 2005 |
| 3434 | NORTH NAVAJO | Cheyenne County, CO | Oil & Gas Property | Feb 2025 |
| 3435 | NORTH PLATTE | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3436 | NORTH PLATTE | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3437 | NORTH PLATTE FEDERAL | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3438 | NORTH QUEBEC | Adams County, CO | Oil & Gas Property | Feb 2024 |
| 3439 | NORTH RINN | Weld County, CO | Oil & Gas Property | Mar 2023 |
| 3440 | NORTHGLENN STATE | Weld County, CO | Oil & Gas Property | Jul 2024 |
| 3441 | NORTHLIGHT | Larimer County, CO | Oil & Gas Property | Mar 2025 |
| 3442 | NORTHRUP | Weld County, CO | Oil & Gas Property | May 2018 |
| 3443 | NORTHWEST | Broomfield County, CO | Oil & Gas Property | Mar 2025 |
| 3444 | NORTHWEST ARAPAHOE | Cheyenne County, CO | Oil & Gas Property | Mar 2025 |
| 3445 | NORTHWEST CEDAR HILL 32-1 | La Plata County, CO | Oil & Gas Property | Mar 2025 |
| 3446 | NORTON | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3447 | NOVACEK | Weld County, CO | Oil & Gas Property | Feb 2017 |
| 3448 | NPR 1 | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3449 | NPR 2 | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3450 | NPR H15 | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3451 | NPR O04 | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3452 | NRC 1 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3453 | NRC 2 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3454 | NRC 3 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3455 | NRC 4 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3456 | NUGENT LD06-6 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3457 | NUGGET UNIT | Washington County, CO | Oil Property | Aug 2017 |
| 3458 | NVEGA | Mesa County, CO | Oil & Gas Property | Mar 2025 |
| 3459 | NW ARAPAHOE U | Cheyenne County, CO | Oil & Gas Property | Mar 2025 |
| 3460 | NW CEDAR HILL 32-10 1 | La Plata County, CO | Gas Property | Mar 2025 |
| 3461 | NW GRAYLIN D-SAND UNIT | Logan County, CO | Oil & Gas Property | Dec 2014 |
| 3462 | NWAU | Cheyenne County, CO | Gas Property | Mar 2025 |
| 3463 | NYGREN | Weld County, CO | Oil & Gas Property | Dec 2024 |
| 3464 | O. LUEKING | Yuma County, CO | Gas Property | Mar 2025 |
| 3465 | OCHO LD 17-3 | Adams County, CO | Oil & Gas Property | Mar 2025 |
| 3466 | OCHSNER | Weld County, CO | Oil & Gas Property | Jan 2023 |
| 3467 | OCOMA | Weld County, CO | Oil & Gas Property | Dec 2016 |
| 3468 | OCOMA | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3469 | OCOMA B | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 3470 | OCOMA UPRR LEASE B | Weld County, CO | Oil & Gas Property | Oct 2016 |
| 3471 | ODELL | Yuma County, CO | Gas Property | Mar 2025 |
| 3472 | ODELL | Yuma County, CO | Oil & Gas Property | Mar 2025 |
| 3473 | ODENBAUGH | Weld County, CO | Oil & Gas Property | Jul 2022 |
| 3474 | ODLE BB1 | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 3475 | OESTMAN | Yuma County, CO | Gas Property | Aug 2022 |
| 3476 | OGRADY | Weld County, CO | Oil & Gas Property | Nov 2017 |
| 3477 | OHARE | Weld County, CO | Oil & Gas Property | Jan 2022 |
| 3478 | OJB 15 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3479 | OKAGAWA | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3480 | OKAGAWA FEDERAL | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 3481 | OLANDER | Weld County, CO | Oil & Gas Property | May 2018 |
| 3482 | OLANDER | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3483 | OLDLAND | Rio Blanco County, CO | Oil & Gas Property | Aug 2008 |
| 3484 | OLGUIN | La Plata County, CO | Gas Property | Mar 2025 |
| 3485 | OLIN | Weld County, CO | Oil & Gas Property | Jun 2019 |
| 3486 | OLIN | Weld County, CO | Oil & Gas Property | May 2020 |
| 3487 | OLIN HA | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 3488 | OLIN STATE | Weld County, CO | Oil & Gas Property | Nov 2019 |
| 3489 | OLSON | Phillips County, CO | Gas Property | Sep 2023 |
| 3490 | OLSON | Weld County, CO | Oil & Gas Property | Jun 2020 |
| 3491 | OLSON | La Plata County, CO | Gas Property | Mar 2025 |
| 3492 | OLSON | Weld County, CO | Oil & Gas Property | Jun 2018 |
| 3493 | OLSON-SMITH | La Plata County, CO | Gas Property | Mar 2025 |
| 3494 | OLTJENBRUNS | Phillips County, CO | Gas Property | Aug 2023 |
| 3495 | ON THE BRINK 843-3 | Phillips County, CO | Gas Property | Sep 2023 |
| 3496 | ONION 1907-0 | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3497 | ONYX FEDERAL | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 3498 | OPAL LECHNER A | La Plata County, CO | Gas Property | Mar 2025 |
| 3499 | OPATRIL | Weld County, CO | Oil & Gas Property | Apr 2017 |
| 3500 | OPDYKE | Weld County, CO | Oil & Gas Property | Feb 2024 |