Patent ID: 6070664
Filing Date: 2000-06-06
Classification: C09K,E21B

Abstract:
A method of reducing formation water production upon stimulation of a subterranean formation comprising:introducing a solution of a first reactive polymer and a second reactive polymer capable of polymerizing with said first reactive polymer into said fracture in said formation and into the matrix of said formation, said solution of reactive polymers having a pH of at least about 9 by the addition of a pH adjusting agent;introducing a gelled fluid comprising a hydrated galactomannan gelling agent and water into said formation at a rate and pressure sufficient to create a fracture and to extend said fracture in said formation; andshutting-in said well for a sufficient period of time to permit the first and second reactive polymers to polymerize in said formation whereby said reaction product selectively reduces the permeability of said subterranean formation to water.