Demulsification of water-in-oil emulsion

Details Demulsification of water-in-oil emulsion Demulsification of water-in-oil emulsion

B - Operations, Transporting

01

D

B01D 17/05 (2006.01) C02F 1/00 (2006.01) C10G 31/00 (2006.01) C02F 1/26 (2006.01) C02F 1/40 (2006.01)

Patent

CA 2657844

A method of demulsifying a water-in-pil emulsion is provided. The method includes treating a volume of fluids comprising oil and water by adding a salt of a polynuclear, aromatic sulfonic acid to the fluids so as to cause the oil and water to be at least partially demulsified. The method may further include separating water and oil in a separator. A method of producing hydrocarbons from a subsurface reservoir is also provided. The hydrocarbons include a water-in-oil emulsion. The method includes producing the hydrocarbons through a wellbore, and subjecting the water-in-oil emulsion to a salt of a polynuclear, aromatic sulfonic acid additive so as to cause the oil and water to be at least partially demulsified.

La présente invention concerne un procédé de démulsification d'émulsion eau dans huile. Ce procédé consiste à traiter un volume de fluides comprenant de l'huile et de l'eau par l'addition d'un sel d'acide sulfonique aromatique polynucléaire dans ces fluides de façon à entraîner la démulsification au moins partielle de cette huile et de cette eau. Ce procédé peut aussi consister à séparer l'eau et l'huile dans un séparateur. L'invention concerne aussi un procédé de production d'hydrocarbures à partir d'un réservoir sous la surface. Ces hydrocarbures contiennent une émulsion eau dans huile. Ce procédé consiste à produire les hydrocarbures via un puits et à soumettre l'émulsion eau dans l'huile à des d'additifs d'acides sulfoniques aromatiques polynucléaires afin d'entraîner la démulsification partielle au moins de l'huile et de l'eau.

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