Sheridan County, Montana Wells Summary
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Total wells
Most recent drilling
First on record
Activity status
Sheridan County contains 1,100 wells on file, with top operators including D90 Energy, LLC and Northern Oil Production, Inc..
Wells in Sheridan span several oil & gas fields including Flat Lake and Goose Lake.
Most recent well on record: A31-55-25 DD, operated by USGS — last updated March 2026.
Active drilling rigs · Baker Hughes snapshot, week of 2026-07-02
By basin
- 3 Williston
Drilling for
- 3 Oil
Sheridan 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.
1,100 wells plotted ·
0 active in last 60 days
Basemap © OpenStreetMap contributors · well data © Oil and Gas Information · tiles served by DynamoMap
Top Operators in Sheridan County by total wells
Operators: D90 Energy, Llc, Northern Oil Production, Inc., Wy Basin Operating Llc, Signal Drilling & Expl. Co. Inc., Granite Creek Energy Llc, Rim Operating, Inc., Chevron U.s.a. Inc.(A Pennsylvania Corp.), Sun Exploration And Production Co, Amerada Hess Corporation, Oryx Energy Company.
Top Oil & Gas Fields intersecting Sheridan County
Fields: Flat Lake, Goose Lake, Dwyer, Divide, Outlook, Raymond, Wildcat Sheridan, Clear Lake, Reserve, Katy Lake, North.
Top Counties in Montana most active by total wells
Compare Sheridan against the other busiest counties in Montana:
Recent wells
| Well Name | Last activity | Updates | Operator | API |
|---|---|---|---|---|
| A31-55-25 DD | 2026-03-18 | USGS | 25091080110000 | |
| 31-55-24 AA | 2026-03-18 | USGS | 25091080100000 | |
| A32-56-31 CC | 2026-03-18 | USGS | 25091080170000 | |
| A31-56-28 CC | 2026-03-18 | USGS | 25091080130000 | |
| A31-55-13 DD | 2026-03-18 | USGS | 25091080090000 | |
| A31-55-36 DD | 2026-03-18 | USGS | 25091080120000 | |
| A31-56-30 BB | 2026-03-18 | USGS | 25091080140000 | |
| A32-56-31 BC | 2026-03-18 | USGS | 25091080160000 | |
| A32-56-31 BB | 2026-03-18 | USGS | 25091080150000 | |
| Brethren 43-29 | 2023-12-17 | Rim Operating, Inc. | 25091219460000 |
Surface Ownership Records:
