Process for restoring the permeability of a subterranean formati

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

1990-05-10

1991-08-13

Suchfield, George A.

Wells

Processes

Chemical inter-reaction of two or more introduced materials

1663051, 166312, 252 8552, E21B 3700

Patent

active

050388649

ABSTRACT:
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 polymer accumulation so as to degrade and disperse same. The mutual solvent comprises alcohol, aromatic hydrocarbon, and an alkyl or alkylaryl polyoxyalkylene phosphate ester surfactant.

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