In the Cypress Hills area, most of the oil has been found in a long chain of oil fields east of the Cypress Hills. These fields extend northward from the Rapdan field to the Battrum field. Most of the gas has been found west and north of the Cypress Hills where its occurrence appears to be influenced by the Sweetgrass arch.

The oil is more abundant in the Jurassic and lowermost Lower Cretaceous sediments while the gas is more abundant in the uppermost Lower Cretaceous and Upper Cretaceous sediments.

In comparing hydrocarbons per cubic mile of sediments, the concentration of recoverable oil discovered to date in the sediments underlying the Cypress Hills area is nearly two-thirds of the concentration in the sediments underlying all of Alberta and Saskatchewan. The comparable concentration of recoverable gas in the sediments underlying the Cypress Hills area is slightly less than the concentration in the sediments underlying all of Alberta and Saskatchewan.

In comparing hydrocarbons per exploratory foot, the initial recoverable oil reserves of the Cypress Hills area is about one-half of that calculated for Alberta and Saskatchewan combined. The initial marketable gas reserves per exploratory foot is nearly three-quarters of that calculated for Alberta and Saskatchewan combined. In making these calculations, it was noted that the exploratory footage per cubic mile of sediments was almost one-fifth greater for the Cypress Hills area than for Alberta and Saskatchewan combined.

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