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The Joseph Lake, Armena and Camrose oil fields, Alberta, produce high gravity crude from the Viking sand of the Colorado formation. All three fields have similar producing characteristics and are situated in the same producing “trend.” This “trend” is a stratigraphic trap caused by northeastward “shaling out” of the Viking sand. Local structures and permeability barriers cause slight variations of gas-oil and oil-water contacts within the productive areas.

Proved oil recoverable reserves of the three fields are approximately 66,000,000 barrels. Probable reserves for the “trend” between the northwesternmost Joseph Lake wells and the farthest southeastern Camrose wells, a distance of 33 miles, are about 100,000,000 barrels, recoverable by primary methods.

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