Secondary recovery process

Details Secondary recovery process Secondary recovery process

E - Fixed Constructions

21

B

E21B 43/24 (2006.01) E21B 43/16 (2006.01) E21B 43/40 (2006.01)

Patent

CA 2093471

ABSTRACT OF DISCLOSURE In accordance with illustrative embodiments of the present invention, a process for the secondary recovery of oil found in a dolomite formation includes generating in-situ decomposition of the dolomite by heating it to a temperature in the range of from 1,400-1,750° F which produces a reaction that has magnesium and calcium oxides and a large quantity of carbon dioxide as products. The carbon dioxide saturates the oil in surrounding formations and makes it more movable toward one or more recovery wells. The heat is convected into the formation by a fluid that is injected into the well from the surface.

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