Integrated system and method for steam-assisted gravity...

E - Fixed Constructions – 21 – B

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E21B 43/243 (2006.01) C10G 1/04 (2006.01)

Patent

CA 2632170

A method and system for producing steam for extraction of heavy bitumen including the steps of mixing carbon or hydrocarbon fuel. The fuel is crude oil, vacuum residue, asphaltin, petcoke or coal. The oxidation gas includes oxygen, oxygen enriched air or air- combustion of the mixture under high pressure and high temperature. The fuel is mixed with low quality contaminated water containing organics and inorganics. The liquid phase transferred to a gas phase includes steam and carbon dioxide, wherein solids are separated from the gas phase. The gas phase is mixed with saturated water to scrub the remaining solids and produce saturated steam. The solid rich water is recycled back for liquids gasification. The super-heated dry steam and gas mixture is send to an enhanced oil recovery facility for injection into an underground reservoir.

Il s'agit d'une méthode et d'une installation de production de vapeur pour l'extraction de bitume lourd qui comprend les étapes de mélange de charbon et d'hydrocarbure. Le combustible est du pétrole brut, du résidu sous vide, de l'asphaltage, du coke de pétrole ou du charbon. Le gaz d'oxydation comprend de l'oxygène, de l'air enrichi en oxygène ou la combustion à l'air du mélange, sous haute pression et haute température. Le combustible est mélangé avec de l'eau contaminée de faible qualité contenant des éléments organiques et inorganiques. La phase liquide transférée à une phase gazeuse comprend la présence de vapeur et de dioxyde de carbone, dans laquelle les solides sont séparés de la phase gazeuse. Le contenu de la phase gazeuse est mélangé à de l'eau saturée pour laver les solides restants et produire de la vapeur saturée. L'eau riche en solides est recyclée pour la gazéification des liquides. Le mélange de vapeur sèche et de gaz surchauffé est envoyé à une installation améliorée de récupération du pétrole pour injecter ce mélange dans un réservoir souterrain.

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