Title | Date | Subject | Description | ||
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1 | Production of bitumen from a tar sand formation | 1976-05-25 | bitumen production; subterranean tar sand; patent | A method of producing bitumen from a subterranean tar sand formation while heating the formation via electrical conduction between a plurality of wells completed therein characterized by a plurality of steps. First, a high back pressure is maintained on the wells. Next, an immiscible fluid is inject... |