Patent ID: 11851613

Abstract:
Compositions and methods for controlled delivery of acid to a desired location, for instance to a subterranean formation, are disclosed. A method for in situ acid stimulation of a subterranean formation that contains a hydrocarbon reservoir and a method for in situ acid treatment of a subterranean formation includes contacting the subterranean formation with (a) a sulfonate-based ammonium salt capable of being oxidized to produce acid; and (b) an oxidizing agent capable of oxidizing the sulfonate-based ammonium salt, where the ammonium salt and oxidizing agent in the aqueous fluid react to produce acid. The method for in situ acid stimulation of a subterranean formation includes stimulating the subterranean formation with the produced acid. The method for in situ acid treatment of a subterranean formation includes treating the subterranean formation with the produced acid.