Process for restoring the permeability of a subterranean...

Details Process for restoring the permeability of a subterranean... Process for restoring the permeability of a subterranean...

E - Fixed Constructions

21

B

166/16

E21B 33/14 (2006.01) C09K 8/60 (2006.01)

Patent

CA 2031568

900003 000 ABSTRACT OF THE DISCLOSURE A process for restoring the injectivity of a well penetrating and in fluid communication with a subterranean formation wherein an aqueous treating solution comprising a mixture of an aqueous solution having no more than 30 weight percent of hydrogen peroxide dissolved therein and a mutual solvent is injected via the well to contact the polymer accumulation so as to degrade and disperse same. The mutual solvent comprises alcohol, aromatic hydrocarbon, and an alkyl or aralkyl polyoxyalkylene phosphate ester surfactant.

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