Process for recovering heavy oil

Details Process for recovering heavy oil Process for recovering heavy oil

E - Fixed Constructions

21

B

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

Patent

CA 2678262

A method for recovering oil includes recovering an oil-water mixture from a well and separating oil from the oil-water mixture to produce an oil product and produced water. The produced water is directed to an evaporator which produces steam that is condensed to form a distillate. Thereafter the distillate is directed to a steam generator and is heated to form steam and water. At least a portion of the water is recirculated through the steam generator. Another portion of the water is mixed with the steam to form a steam-water mixture that is injected into an injection well.

L'invention concerne un procédé de récupération d'huile comprenant la récupération d'un mélange huile-eau à partir d'un puits et la séparation de l'huile du mélange huile-eau pour produire un produit pétrolier et de l'eau produite. L'eau produite est dirigée vers un évaporateur qui produit de la vapeur qui est condensée pour former un distillat. Par la suite, le distillat est dirigé vers un générateur de vapeur et est chauffé pour former de la vapeur et de l'eau. Au moins une partie de l'eau est remise en circulation par l'intermédiaire du générateur de vapeur. Une autre partie de l'eau est mélangée avec la vapeur pour former un mélange vapeur-eau qui est injecté dans un puits d'injection.

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