Patent ID: 8592353

Claim:
A method of diverting fluids in a subterranean formation, the method comprising: providing a first treatment fluid comprising an aqueous fluid and a relative permeability modifier comprising a hydrophobically modified water-soluble polymer that is: (a) synthesized from a reaction between a hydrophilic polymer and a hydrophobic compound comprising an alkyl group having from about 7 to about 22 carbon atoms, or (b) synthesized from a polymerization reaction between a hydrophilic monomer and a hydrophobically modified hydrophilic monomer, the hydrophobically modified hydrophilic monomer comprising an alkyl group having from about 7 to about 22 carbon atoms and the hydrophobically modified hydrophilic monomer being selected from the group consisting of: an alkyl acrylate; an alkyl methacrylate; an alkyl acrylamide; an alkyl methacrylamide; an alkyl dimethylammoniumethyl methacrylate halide; and an alkyl dimethylammoniumpropyl methacrylamide halide; introducing the first treatment fluid into a well bore penetrating a subterranean formation such that the first treatment fluid penetrates into a portion of the subterranean formation in a sufficient amount so as to substantially divert a second treatment fluid to another portion of the subterranean formation wherein the second treatment fluid comprises an aqueous treatment fluid; introducing the second treatment fluid into the well bore; substantially diverting the second treatment fluid from the portion of the subterranean formation penetrated with the first treatment fluid to another portion of the subterranean formation; and, performing a well treatment operation using the second treatment fluid after the first treatment fluid has penetrated into the portion of the subterranean formation; wherein the well treatment operation comprises at least one treatment selected from the group consisting of an acid stimulation operation, a clay stabilization operation, and a scale inhibition operation.