Cyclic gaseous compression/expansion for heightened oil...

C - Chemistry – Metallurgy – 10 – B

Patent

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C10B 53/06 (2006.01)

Patent

CA 2703835

A method for extracting hydrocarbons from sands can include: providing sands containing a hydrocarbon; mixing the hydrocarbon sands with water; heating the water before, during, or after being mixed with the hydrocarbon sands; increasing the pressure within a closed vessel containing the heated hydrocarbon and water mixture in the presence of gas or by injecting with gas; releasing the pressure of the heated hydrocarbon and water mixture in the vessel so as to create microbubbles from the dissolved gas in the water mixture; and collecting the hydrocarbon from the water. Optionally, the process is substantially devoid of adding caustic agents to the hydrocarbon and water mixture.

La présente invention concerne un procédé d'extraction d'hydrocarbures à partir de sables comprenant: la mise à disposition de sables contenant des hydrocarbures; le mélange des sables contenant des hydrocarbures avec de l'eau ; le chauffage de l'eau avant, pendant, ou après le mélange avec les sables contenant des hydrocarbures ; l'accroissement de la pression dans une cuve fermée contenant les hydrocarbures chauffés et le mélange aqueux en présence d'un gaz ou par injection avec un gaz ; la détente de la pression des hydrocarbures chauffés et du mélange aqueux dans la cuve pour créer des microbulles à partir du gaz dissous dans le mélange aqueux ; et la récupération des hydrocarbures à partir de l'eau. Éventuellement, le procédé et sensiblement exempt d'addition d'agents caustiques à l'hydrocarbure et au mélange aqueux.

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