Patent ID: 7921912
Filing Date: 2011-04-12
Classification: C09K

Abstract:
1. A method comprising: providing an acid-generating fluid that comprises an acid-generating compound that comprises at least one acid-generating compound selected from the group consisting of: a poly(ortho ester); an orthoester; a poly(glycolide); a poly(ε-caprolactone); a poly(hydroxybutyrate); a poly(anhydride); an aliphatic polycarbonate; a poly(amino acid); a poly(ethylene oxide); a polyphosphazene; a derivative thereof; and a combination thereof; and a pH-adjusting agent, wherein the pH-adjusting agent controls the hydrolysis rate of the acid generating compound; placing the acid-generating fluid into a subterranean formation, wherein the acid-generating compound present in the acid-generating fluid is in liquid form; allowing an acid and an alcohol to generate from the acid-generating fluid; allowing the alcohol to mix with a fluid in the subterranean formation; and allowing the surface tension between that fluid and the subterranean formation to be altered.