16,666 wells across 1,621 active operators, with 7 drilling permits filed in the last 24 months.
Refreshed monthly from BOGC well-header records. Data current as of 2026-08-23.
Quick answer: The Sweetgrass Arch formation in Montana has 16,666 wells on record across 1,621 active operators, with 7 drilling permits filed in the last 24 months (as of 2026-08-23). Its most active operators by well count are Somont Oil Company, New Horizon Resources, McR, Montalban Oil Etal and A B Energy. Compiled from Montana Board of Oil and Gas Conservation (BOGC) well-header records, refreshed monthly.
The operators with the most well counts targeting the Sweetgrass Arch formation in Montana:
| # | Operator | Wells in Sweetgrass Arch |
|---|---|---|
| 1 | Somont Oil Company | 1,006 |
| 2 | New Horizon Resources | 933 |
| 3 | Mcr | 578 |
| 4 | Montalban Oil Etal | 426 |
| 5 | A B Energy | 380 |
| 6 | Montana Power Company | 303 |
| 7 | Northwestern | 286 |
| 8 | Keesun | 282 |
| 9 | Texaco Exploration And Production | 280 |
| 10 | Fx Drilling Company | 278 |
The Montana counties with the most Sweetgrass Arch activity:
Toole, Glacier, Pondera, Liberty, Chouteau
The Sweetgrass Arch is one of Montana's active oil and gas plays, with 16,666 wells on file across 1,621 distinct operators of record. Operators have filed 7 drilling permits targeting the Sweetgrass Arch in the last 24 months — a measure of how active the play is right now versus its historical baseline.
For mineral owners with interests in Toole, Glacier, Pondera, Liberty, Chouteau, knowing whether your tract sits within an active Sweetgrass Arch footprint is a foundational valuation question. Active formations with consistent permit flow command premium pricing; legacy formations with steady but declining production are valued differently.
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16,666 wells target the Sweetgrass Arch in Montana, worked by 1,621 active operators, per BOGC well-header records (as of 2026-08-23).
By well count, the most active Sweetgrass Arch operators in Montana are Somont Oil Company, New Horizon Resources, McR, Montalban Oil Etal and A B Energy. The full ranking is in the table on this page.
Operators filed 7 drilling permits targeting the Sweetgrass Arch in the last 24 months — a live measure of current activity, per BOGC records.
Operators filed 7 new drilling permits targeting the Sweetgrass Arch in Montana over the last 24 months. New permits and spuds are the clearest signal of active Sweetgrass Arch drilling, per BOGC records (as of 2026-08-23).
Sweetgrass Arch activity in Montana currently spans 16,666 wells on record and 1,621 active operators, led by Somont Oil Company, New Horizon Resources, McR, Montalban Oil Etal and A B Energy, with 7 drilling permits filed in the last 24 months — refreshed monthly from Montana Board of Oil and Gas Conservation (BOGC) well-header records (as of 2026-08-23).
The most active Sweetgrass Arch counties in Montana are Toole, Glacier, Pondera, Liberty, Chouteau.
Value depends on your net mineral acres or royalty decimal, the operator, the remaining drilling locations, and current oil and gas prices. Buckhead Energy checks your tract against current Sweetgrass Arch well and permit data and puts a free, no-obligation written offer in writing — this page is informational only, not a valuation.
Cite this dataset
Permanently archived and citable via a DOI on Zenodo (CERN), under a CC BY 4.0 license. DOI: 10.5281/zenodo.21442884 · View on Zenodo
License & attribution: This data is licensed CC BY 4.0. You are free to share and adapt it, including commercially, provided you credit “Buckhead Energy” and link back to this page or the DOI above.
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Formation: Sweetgrass Arch
State: Montana
Total wells: 16,666
Active operators: 1,621
Permits 24mo: 7
Last refresh: 2026-08-23
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