Method of gas-cap air injection for thermal oil recovery
Method of gas-cap air injection for thermal oil recovery
Sanmiguel, J E and Toews, M A and Freeman, L W
US Patent 8,176,980 2012
Abstract : A method for producing bitumen or heavy oil from a subsurface oil sands reservoir, the subsurface oil sands reservoir and an overlying gas zone in fluid communication, the method includes providing an in situ combustion process in the overlying gas zone, to create łdots