Dunn County has 5,238 wells in the NDIC well file — 3,386 of them producing today (3,386 oil, 0 gas), 278 permitted, 0 spudded but not yet completed, and 670 plugged and abandoned. The most active operator by well count is Enerplus Resources Usa Corporation. Figures come from the 2026-09-29 NDIC bulk file; production runs through 2026-07.
| Operator | Wells |
|---|---|
| Enerplus Resources Usa Corporation | 851 |
| Marathon Oil Company | 802 |
| Continental Resources, INC. | 701 |
| Devon Energy Williston, L.l.c. | 508 |
| Xto Energy INC | 442 |
| Burlington Resources Oil & Gas Company LP | 381 |
| Lime Rock Resources Iii-A, L.p. | 263 |
| Petro-Hunt, L.l.c. | 136 |
| Oasis Petroleum North America LLC | 112 |
| Wpx Energy Williston, LLC | 103 |
| Field | Wells |
|---|---|
| Little Knife | 475 |
| Heart Butte | 475 |
| Bailey | 406 |
| Murphy Creek | 356 |
| Corral Creek | 269 |
| Mcgregory Buttes | 251 |
| Jim Creek | 242 |
| Mandaree | 233 |