Rosebud County has 1,171 wells in the MBOGC well file — 36 of them producing today (32 oil, 4 gas), 3 permitted, 0 spudded but not yet completed, and 962 plugged and abandoned. The most active operator by well count is Cline Production Company. Figures come from the 2026-09-29 MBOGC bulk file; production runs through 2026-08.
| Operator | Wells |
|---|---|
| Cline Production Company | 80 |
| Tomahawk Oil Company, INC. | 76 |
| Texaco Exploration And Production INC. | 56 |
| Conoco INC. | 56 |
| True Oil LLC | 52 |
| Mcalester Fuel Co | 36 |
| Montana Energy Company, LLC | 34 |
| Reunion Energy Company | 21 |
| Tuck, L L | 18 |
| Sun Coulee, LLC | 17 |
| Field | Wells |
|---|---|
| Sumatra | 195 |
| Stensvad | 28 |
| High Five | 21 |
| Rattler Butte | 18 |
| Wildcat Rosebud, N | 17 |
| Breed Creek | 16 |
| Kincheloe Ranch | 11 |
| Sumatra (Heath) | 9 |