Big Horn County, Montana Wells Summary
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Total wells
Most recent drilling
First on record
Activity status
Big Horn County contains 1,775 wells on file, with top operators including Fidelity Exploration & Production Co. and Summit Gas Resources, Inc..
Wells in Big Horn span several oil & gas fields including CX and Dietz.
Most recent well on record: Tullock Ck WW 1, operated by No Bonded Operator — last updated March 2026.
Active drilling rigs · Baker Hughes snapshot, week of 2026-07-02
By basin
- 3 Williston
Drilling for
- 3 Oil
Big Horn 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.
1,775 wells plotted ·
0 active in last 60 days
Basemap © OpenStreetMap contributors · well data © Oil and Gas Information · tiles served by DynamoMap
Top Operators in Big Horn County by total wells
Operators: Fidelity Exploration & Production Co., Summit Gas Resources, Inc., Highline Exploration, Inc., Soap Creek Associates, Inc., Big Horn Oil & Gas Development Co., Ursa Major (Crow Og), Llc, Shell Oil Company, Redstone Gas Partners, Llc, Vessels & Bass, Williston Basin Interstate Pipeline Company.
Top Oil & Gas Fields intersecting Big Horn County
Fields: Cx, Dietz, Toluca, Hardin, Coal Creek, Soap Creek, Wildcat Big Horn, Dunmore, Ash Creek, Snyder.
Top Counties in Montana most active by total wells
Compare Big Horn against the other busiest counties in Montana:
Recent wells
| Well Name | Last activity | Updates | Operator | API |
|---|---|---|---|---|
| Tullock Ck WW 1 | 2026-03-18 | No Bonded Operator | 25003080130000 | |
| Hardin 1 | 2026-03-18 | No Bonded Operator | 25003080200000 | |
| Hardin 2 | 2026-03-18 | No Bonded Operator | 25003080210000 | |
| Sikenga 3 | 2026-03-18 | Yellowstone Oil and Gas Company | 25003080260000 | |
| Baseline 1 | 2019-07-07 | Briscoe Petroleum, LLC | 25003229560000 | |
| Doc Holliday 2H | 2018-08-26 | Alta Vista Oil Corporation | 25003229530000 | |
| Kendrick Heirs #13-32 | 2018-08-20 | Briscoe Petroleum, LLC | 25003229540000 | |
| Pratt 8-20 | 2017-12-08 | Briscoe Petroleum, LLC | 25003229510000 | |
| Kendrick Heirs 4-6 | 2017-04-07 | Briscoe Petroleum, LLC | 25003229500000 | |
| Kendrick Heirs 1-4 | 2015-07-20 | Briscoe Petroleum, LLC | 25003229480000 |
Surface Ownership Records:
