Use of a solvent-external emulsion for in situ oil recovery

Details Use of a solvent-external emulsion for in situ oil recovery Use of a solvent-external emulsion for in situ oil recovery

E - Fixed Constructions

21

B

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

Patent

CA 2696638

Described is a way to reduce solvent usage in solvent-dominated oil recovery processes through the use of an emulsion. Injection of a solvent-external emulsion into an oil reservoir is performed as an alternative or supplement to solvent injection to minimize solvent usage per unit amount of oil recovered. A solvent-external emulsion may be formed using an aqueous liquid or a gas as the internal phase. Polymer may be added to viscosify the emulsions and use them for flow diversion in a solvent-dominated process.

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