In situ recovery from a tar sands formation

Details In situ recovery from a tar sands formation In situ recovery from a tar sands formation

E - Fixed Constructions

21

B

E21B 43/24 (2006.01) E21B 36/00 (2006.01)

Patent

CA 2668390

A method for treating a tar sands formation (32) in situ includes providing heat from one or more heat sources (30) to a portion of the tar sands formation. The heat may be allowed to transfer from the heat source(s) to a selected section of the formation to pyrolyze at least some hydrocarbons within the selected section. A mixture of hydrocarbons of a selected quality may be produced from the selected section by controlling production of the mixture to adjust the time that at least some hydrocarbons are exposed to pyrolysis temperatures in the formation.

Une méthode permettant de traiter un gisement de sables bitumineux (32) in situ consiste à fournir de la chaleur à partir d'une ou de plusieurs source(s) de chaleur (30) à une portion du gisement. On peut laisser la chaleur se transmettre de la ou des source(s) de chaleur à une portion choisie du gisement afin de pyrolyser au moins certains des hydrocarbures dans la section en question. Un mélange d'hydrocarbures de qualité sélectionnée peut être produit à partir de la section choisie en régulant la génération de ce mélange afin d'ajuster la durée pendant laquelle au moins certains des hydrocarbures sont exposés aux températures de pyrolyse dans le gisement.

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