Patent ID: 8822387
Filing Date: 2014-09-02
Classification: C09K,Y10S

Abstract:
1. A waxy oil-external emulsion for injection into a selected zone of a subsurface formation, comprising: oil; added wax; and water; wherein the waxy oil-external emulsion is formulated to be a liquid at a temperature greater than a targeted temperature in the selected zone, but a solid at about the targeted temperature, wherein the waxy oil-external emulsion is further formulated to have a viscosity at or greater than that of fluids in the selected zone, so that the waxy oil-external emulsion displaces the fluids upon injection as a liquid, and wherein the waxy oil-external emulsion is formulated to have a viscosity of about 1.25 to about 3.0 times greater than that of fluids in the selected zone so that the waxy oil-external emulsion displaces the fluids upon injection as a liquid.