Methods of treating a hydrocarbon containing formation

E - Fixed Constructions – 21 – B

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E21B 43/24 (2006.01)

Patent

CA 2720997

Methods of generating subsurface heat for treatment of a hydrocarbon containing formation are described herein. Methods include providing water through one or more wellbores to at least a portion of a hydrocarbon containing formation and combusting at least a portion of a fuel stream comprising hydrogen sulfide in the presence of an oxygen source in one or more heaters positioned in one of the wellbores to produce a combustion by-products stream. Heat from the combustion is transferred to a portion of the hydrocarbon containing formation. The combustion by-prod-ucts stream includes one or more sulfur oxides. Heat of solution is released by contacting at least a portion of the combustion by-products stream with a portion of the water and/or a portion of water in the hydrocarbon containing formation.

La présente invention concerne des procédés de génération de chaleur souterraine pour le traitement dune formation contenant des hydrocarbures. Les procédés comprennent la fourniture deau à travers un ou des trous de forage à au moins une partie de la formation contenant des hydrocarbures et la combustion dau moins une partie dun flux de combustible comportant du sulfure dhydrogène en présence dune source doxygène dans un ou des réchauffeurs disposés dans un des trous de forage pour produire un flux de produits secondaires de combustion. La chaleur dérivée de la combustion est transférée vers une partie de la formation contenant des hydrocarbures. Le flux de produits secondaires de combustion comprend un ou des oxydes de soufre. La chaleur de solution est libérée par la mise en contact dau moins une partie du flux de produits secondaires de combustion avec une partie de leau et/ou une partie de leau dans la formation contenant des hydrocarbures.

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