Patent ID: 9475974
Filing Date: 2016-10-25
CPC Classification: C09K,F17D

Claim Text:
1. A method of treating a surface in contact with a wellbore and/or a subterranean formation penetrated by a well bore, comprising: mixing a rheological polymer, a partitioning agent and a first aqueous medium to form a heterogeneous mixture comprising: diluting the heterogeneous mixture with a second aqueous medium miscible with the first aqueous medium to mutually dissolve the polymer-rich phase and the partitioning-agent rich phase and form a well treatment fluid comprising a continuous mixed polymer-agent phase; and injecting the well treatment fluid into the well bore; wherein the stability of the heterogeneous mixture is controlled by introducing a stability control agent, wherein the partitioning agent is a polyoxyalkylene, and wherein the stability control agent is selected from the group consisting of polyvinyl pyrrolidone, vinyl pyrrolidone-vinyl acetate copolymers, hydroxyalkylated cellulose, carboxyalkylated cellulose, and non-ionic surfactants.