Patent ID: 7201227
Filing Date: 2007-04-10
Classification: C09K,Y10S

Abstract:
1. A method of treating a subterranean formation, comprising: providing a fluid comprising an aqueous liquid, carbon dioxide, and one or more splittable foamers selected from the group of compounds having formulas wherein, R and R′ are independently selected from the group consisting of organic radicals having 4 to 20 carbon atoms, X is selected from the group consisting of H and organic radicals having 1 to 10 carbons, Y is selected from the group consisting of H and organic radicals having 1 to 5 carbons, Z is selected from the group consisting of H and organic radicals having 1 to 5 carbons, m is 0 or 1, and n is 1 to about 40; introducing the fluid into a well bore; and contacting the fluid and the subterranean formation for a sufficient time to permit the fluid to form a foam.