Producing oil-in-water microemulsions from a microemulsion conce

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

1987-12-17

1990-08-07

Lovering, Richard D.

Compositions

Leather or fur treating

166274, 252312, 252314, E21B 4322

Patent

active

049466062

ABSTRACT:
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 concentration 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.

REFERENCES:
patent: 4249606 (1981-02-01), Kalfoglou
patent: 4252657 (1981-02-01), Barriol et al.
patent: 4271907 (1981-06-01), Gale
patent: 4488602 (1984-12-01), Lepper

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