In-situ combustion for oil recovery

摘要

A method and system for transmitting heat substantially by conduction into a hydrocarbon containing formation surrounding a heat injection well utilise oxidant supply and combustion gases exhaust conduits disposed in the wellbore of the heat injection well, wherein an oxidant, such as air, in injected through the oxidant supply conduit to a reaction zone in the formation in the vicinity of the heat injection well where at least a portion of the hydrocarbons in the formation are oxidized such that heat and combustion gases are generated, and at least a portion of the combustion gases are transmitted through the combustion gases exhaust conduit away from the reaction zone such that migration of combustion gases from the reaction zone into the hydrocarbon containing formation is inhibited.