Method for reducing the permeability of a subterranean formation to aqueous-based fluids

A method of modifying the permeability to water of a subterranean formation, the method comprising:

• injecting into the subterranean formation an aqueous composition including:
• from about 1 to about 10 weight percent of one or more clay stabilization salts;
• and
• from about 0.005 percent to about 2 percent, by weight, of a sulfonated epoxy composition comprising the reaction products of:
• (i) an epoxide-containing compound having an average of more than one epoxide group per molecule, the epoxide-containing compound being represented by the Formula I:
• where Q is selected from a divalent aromatic group —Ar—;
• Ar-L-Ar, wherein L is selected from a direct bond, C1 to C8 alkylene, —SO2—, —S—, >C═O, or —O—;
• a divalent cycloaliphatic group K having from 4 carbons to 8 carbons, or —R1—K—R2— where R1 and R2 are independently a C1 to C3 alkylene group;
• (ii) a primary amino sulfonate, the primary amino sulfonate being represented by the Formula II:
• wherein Z is an aliphatic, cycloaliphatic, polycycloaliphatic, or aromatic hydrocarbon group optionally substituted with one or more alkyl groups and M is Li+, Na+, K+, or NH4+, and the molar ratio of (i) the epoxide-containing compound to (ii) the primary amino sulfonate being 5:1 to 1:5;
• (iii) a primary monoamine alkylene oxide oligomer, the primary monoamine alkylene oxide oligomer being represented by the Formula III:
• wherein R3 is —H, C1 to C12 alkyl or cycloalkyl, R4 is a covalent bond, C1 to C12 alkyl or cycloalkyl, R5 and R6 are independently —H, C1 to C12 alkyl or cycloalkyl, and x and y independently have a value from 0 to 75 with the proviso that at least one of x or y is equal to or greater than 1;
• and
• (iv) optionally a primary monoamine, a secondary diamine, a monohydroxyalkyl primary monoamine, a dihydroxyalkyl primary monoamine, a trihydroxyalkyl primary monoamine, a mono hydroxycycloalkyl primary monoamine, a dihydroxycycloalkyl primary monoamine, or a trihydroxycycloalkyl primary monoamine.