Patent ID: 8114818

Claim:
A method comprising: providing a cyclodextrin modifier comprising hydroxypropyl-β-cyclodextrin and a treatment fluid that comprises a base fluid and a viscosifying agent comprising a hydrophobically modified polymer wherein the hydrophobically modified polymer comprises polydimethylaminoethyl methacrylate; and introducing the cyclodextrin modifier and the treatment fluid into a well bore penetrating a subterranean formation wherein the viscosity of the treatment fluid is increased due to the combination of the hydrophobically modified polymer and the cyclodextrin modifier wherein the hydroxypropyl-β-cyclodextrin is added to in an amount from 0.01% to about 10% by weight of the treatment fluid and wherein the polydimethylaminoethyl methacrylate is added in an amount from 0.02% to about 10% by weight of the treatment fluid.