Patent ID: 7182136
Filing Date: 2007-02-27
Classification: C09K

Abstract:
1. A method of stimulating a subterranean formation penetrated by a well comprising the steps of: (a) introducing into the formation an aqueous treatment fluid containing a hydrophobically-modified, water-soluble relative permeability modifier (hydrophobically-modified RPM), wherein the hydrophobically-modified RPM is the reaction product of a hydrophilic polymer and a hydrophobic compound that are capable of reacting with each other wherein the hydrophilic polymer is a polymer containing reactive amino groups in the polymer backbone or as pendant groups, which are capable of reacting with a hydrophobic alkyl halide compound, and wherein the hydrophobic compound is an alkyl halide having an alkyl chain length of 6 to 22 carbons; and (b) introducing an acidizing treatment fluid into the formation.