In situ method and system for extraction of oil from shale

E - Fixed Constructions – 21 – B

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

Patent

CA 2760967

A system and process for extracting hydrocarbons from a subterranean body of oil shale within an oil shale deposit located beneath an overburden. The system comprises an energy delivery subsystem to heat the body of oil shale and a hydrocarbon gathering subsystem for gathering hydrocarbons retorted from the body of oil shale. The energy delivery subsystem comprises at least one energy delivery well drilled from the surface of the earth through the overburden to a depth proximate a bottom of the body of oil shale, the energy delivery well extending generally downward from a surface location above a proximal en? of the body of oil shale to be retorted and continuing proximate the bottom of the body of oil shale. The energy delivery well may extend into the body of oil shale at an angle.

L'invention porte sur un système et un procédé pour extraire des hydrocarbures à partir d'un corps souterrain de schiste bitumineux dans un dépôt de schiste bitumineux situé sous des morts-terrains. Le système comprend un sous-système de distribution d'énergie pour chauffer le corps de schiste bitumineux et un sous-système de collecte d'hydrocarbure pour collecter des hydrocarbures distillés en cornue à partir du corps de schiste bitumineux. Le sous-système de distribution d'énergie comprend au moins un puits de distribution d'énergie foré à partir de la surface de la terre à travers les morts-terrains jusqu'à une profondeur proche du fond du corps de schiste bitumineux, le puits de distribution d'énergie s'étendant d'une manière générale vers le bas à partir d'un emplacement en surface au-dessus d'une extrémité proximale du corps de schiste bitumineux devant être distillé en cornue et se poursuivant proche du fond du corps de schiste bitumineux. Le puits de distribution d'énergie peut s'étendre incliné dans le corps de schiste bitumineux.

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