Breaking oil-in-water emulsions

Details Breaking oil-in-water emulsions Breaking oil-in-water emulsions

B - Operations, Transporting

01

D

134/56

B01D 17/04 (2006.01) E21B 43/40 (2006.01)

Patent

CA 1148834

T I T L E BREAKING OIL-IN-WATER EMULSIONS I N V E N T O R J. Redmond Farnand ABSTRACT OF THE DISCLOSURE Emulsions of the oil-in-water type, particularly those derived from in situ oil recovery and tar sand processing, can be broken by incorporating an additive comprising (i) formic acid or (ii) a mixture of at least any two of formic acid, oxalic acid and sulfur dioxide, and agitating at an appropriate temperature. The oil phase separates and is recovered. The water phase may be treated to recover formic (and any oxalic) acid, for recycle.

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