Patent ID: 7926568
Filing Date: 2011-04-19
Classification: C09K,E21B

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: an ortho ester; a poly(ortho ester); 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 in a well bore penetrating a subterranean formation, wherein the acid-generating compound present in the acid-generating fluid is in liquid form; and allowing the acid-generating compound to produce an acid that then acidizes at least a portion of the subterranean formation or etches a flow channel in a fracture present in the subterranean formation.