Method of recovering viscous petroleum employing heated...

Details Method of recovering viscous petroleum employing heated... Method of recovering viscous petroleum employing heated...

E - Fixed Constructions

21

B

166/39

E21B 43/24 (2006.01) E21B 43/16 (2006.01) E21B 43/30 (2006.01)

Patent

CA 1170980

ABSTRACT OF THE DISCLOSURE A method is disclosed for recovering viscous petroleum from subsurface formation, such as tar sands, wherein a substantially horizontal, perforated casing is positioned in the formation and a movable diverter is positioned to direct a hot drive fluid out through the perforations and into the formation to move the viscous petroleum that has been heated by the drive fluid toward a production location. The production is monitored for content of drive fluid and petroleum and the position of the diverter is controlled in accordance with the monitored production to optimize the production of petroleum and to maintain the communication path within the formation between the injection location and the production location.

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