SULFONATED RELATIVE PERMEABILITY MODIFIERS FOR REDUCING SUBTERRANEAN FORMATION WATER PERMEABILITY

摘要

Compositions and methods for treating a water and hydrocarbon producing subterranean formation to reduce the water permeability of the formation without substantially reducing the hydrocarbon permeability of the formation are provided. In one embodiment, the method includes providing a treatment fluid including a base fluid and a relative permeability modifier including a polymer of at least one hydrophilic monomer and at least one hydrophobically modified hydrophilic monomer, wherein the polymer includes a sulfonate moiety, and introducing the treatment fluid into at least a portion of a subterranean formation.

主权项

1. A relative permeability modifier comprising:
a polymer of at least one hydrophilic monomer and at least one hydrophobically modified hydrophilic monomer, wherein the polymer comprises a sulfonate moiety and wherein the relative permeability modifier comprises the following structure:wherein X is an integer from 1500 to 20,000, Y is an integer from 25 to 320, Z is an integer from 25 to 430, and n is an integer from 2 to 25.