Jefferson County, Montana Wells Summary
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Total wells
Most recent drilling
First on record
Activity status
Jefferson County contains 8 wells on file, with top operators including Continental Development Co. and Luhman et al.
The only oil & gas field intersecting Jefferson is Wildcat Jefferson.
Most recent well on record: Helena Water Well 2, operated by No Bonded Operator — last updated March 2026.
Active drilling rigs · Baker Hughes snapshot, week of 2026-05-29
By basin
- 2 Williston
Drilling for
- 2 Oil
Jefferson County well density
Every dot is one well — small blue dots are historic wells;
larger orange dots are wells with activity in the last 60 days.
8 wells plotted ·
0 active in last 60 days
Basemap © OpenStreetMap contributors · well data © Oil and Gas Information · tiles served by DynamoMap
Top Operators in Jefferson County by total wells
Operators: Continental Development Co., Luhman Et Al, Dunbar Oil Company, Iowa Mid-West Expl. Co., No Bonded Operator, Norcen Explorer Inc..
Top Oil & Gas Fields intersecting Jefferson County
Fields: Wildcat Jefferson.
Top Counties in Montana most active by total wells
Compare Jefferson against the other busiest counties in Montana:
Recent wells
| Well Name | Last activity | Updates | Operator | API |
|---|---|---|---|---|
| Helena Water Well 2 | 2026-03-18 | No Bonded Operator | 25043060040000 | |
| Kimpton 1-11 | 1991-04-01 | Norcen Explorer Inc. | 25043210020000 | |
| Fee (Carey) 1 | 1969-07-02 | Iowa Mid-West Expl. Co. | 25043210010000 | |
| Dunbar 2 | 1951-02-01 | Dunbar Oil Company | 25043050010000 | |
| Dunbar 2 | 1947-10-30 | Luhman et al | 25043050020000 | |
| Dunbar 1 | 1947-10-03 | Luhman et al | 25043050000000 | |
| Well 1 | 1928-12-01 | Continental Development Co. | 25043050040000 | |
| Well 2 | 1928-12-01 | Continental Development Co. | 25043050030000 |
Surface Ownership Records:
