Larimer County has 799 wells in the ECMC well file — 136 of them producing today (132 oil, 4 gas), 0 permitted, 0 spudded but not yet completed, and 459 plugged and abandoned. The most active operator by well count is Magpie Operating INC. Figures come from the 2026-09-29 ECMC bulk file; production runs through 2026-08.
| Operator | Wells |
|---|---|
| Magpie Operating INC | 105 |
| Kerr Mcgee Oil & Gas Onshore LP | 98 |
| Prospect Energy LLC | 56 |
| Wellington Operating Company | 37 |
| Extraction Oil & Gas INC | 34 |
| Pdc Energy INC | 27 |
| Unknown | 25 |
| Skaer Enterprises | 20 |
| Blackrock Energy Corp | 19 |
| Bison Iv Operating LLC | 15 |
| Field | Wells |
|---|---|
| Wattenberg | 178 |
| Loveland | 163 |
| Wildcat | 159 |
| Fort Collins | 76 |
| Wellington | 71 |
| Berthoud | 39 |
| Johnson's Corner | 29 |
| Clarks Lake | 28 |
10 wells went to a rig in Larimer County in the last twelve months per ECMC; 10 in the last 45 days. The statewide list is on the drilling activity page.