Shelby, Sunburst, Kevin: Montana's oldest oil country on the Sweetgrass Arch, with the most fragmented mineral title and the smallest checks we see anywhere.
Toole County is not Williston Basin at all. This is the Sweetgrass Arch, and the Kevin-Sunburst dome discovered in 1922 makes it the oldest major oil field in Montana. Production comes from shallow Madison Sunburst sand, the Cut Bank sand, Sawtooth and Swift at the Ferdig unit, and Bow Island gas, with the Border Red Coulee field straddling the Canadian line.
It is also the most extreme stripper county we work in. Roughly 1,000 wells produce out of about 7,800 drilled, which is the highest well density on our list, and monthly production works out to roughly a third of a barrel a day per well. Oil has fallen from around 913,000 barrels in 1986 to about 173,000 in 2025.
A century of splitting has produced the most fragmented mineral title in Montana, and an operator base scattered across dozens of one and two well companies, including individuals and Hutterite colonies. Northwestern Corporation holds gas storage rights in the area, which can encumber a mineral estate separately from production and is worth establishing before a sale.
We are one of very few buyers who will look at interests this small. No minimum, all closing costs paid, and if there is money sitting in operator suspense we will tell you how to claim it and you keep it whether or not you ever sell to us.
The Kevin-Sunburst dome, discovered in 1922 and Montana's oldest major field.
Shallow production across the Sweetgrass Arch.
Including the Ferdig Swift Unit.
Shallow gas, with the Border Red Coulee field straddling the Canadian line.
Wherever your tract sits in Toole County, we will research it free and value it with the work shown.
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