| http://www.w3.org/ns/prov#value | - An exemplary method of the present invention is a method for treating a subterranean formation to reduce its permeability to aqueous-based fluids comprising the steps of providing a permeability-modifying aqueous treatment fluid comprising a hydrophobically modified water-soluble polymer that comprises a polymer backbone comprising polar heteroatoms; and contacting the subterranean formation with
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