Producing oil-in-water microemulsions from a microemulsion...

Details Producing oil-in-water microemulsions from a microemulsion... Producing oil-in-water microemulsions from a microemulsion...

E - Fixed Constructions

21

B

31/13

E21B 43/22 (2006.01) C09K 8/58 (2006.01)

Patent

CA 1300867

PRODUCING OIL-IN-WATER MICROEMULSIONS FROM A MICROEMULSION CONCENTRATE (D#78,886-F) ABSTRACT OF THE DISCLOSURE The invention is a method of producing a homogeneous oil-in-water microemulsion comprised of oil, brine and surfactant, wherein the oil has a equivalent alkane carbon number higher than the crude oil which is to be recovered by the microemulsion. A mixture of oil, water and surfactant is prepared in the same relative ratios to oil and surfactant as in the microemulsion desired to be injected, but at higher concentrations relative to water and salt than in the microemulsion to be injected. The cloudy mixture is stirred while adding salt until the mixture changes to a clear oil-in-water microemulsion concentrate. The microemulsion concentrate is then mixed with sufficient water of the proper salinity to form the oil-in-water microemulsion desired to be injected. pg:EX8J/03

583853

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