Mchenry County has 170 wells in the NDIC well file — 8 of them producing today (8 oil, 0 gas), 0 permitted, 0 spudded but not yet completed, and 149 plugged and abandoned. The most active operator by well count is Murex Petroleum Corporation. Figures come from the 2026-09-29 NDIC bulk file; production runs through 2026-07.
| Operator | Wells |
|---|---|
| Murex Petroleum Corporation | 17 |
| Amerada Hess Corporation | 14 |
| Cardinal Petroleum Co. | 7 |
| Empire North Dakota LLC | 7 |
| Hunt Oil Company | 6 |
| Farmers Union Central Exchange, INC. | 6 |
| Calvert Exploration Co. | 5 |
| Axem Resources, INC. | 5 |
| Davis Oil Co. | 4 |
| Triton Oil Co. | 4 |
| Field | Wells |
|---|---|
| Wildcat | 121 |
| Pratt | 34 |
| Wake | 14 |
| Glenburn | 1 |