Phenolic and naphtholic ester crosslinked polymeric gels for per

Details Phenolic and naphtholic ester crosslinked polymeric gels for per Phenolic and naphtholic ester crosslinked polymeric gels for per

1989-03-10

1990-05-22

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

166272, 166273, 166274, 166295, 523130, E21B 33138, E21B 4322, E21B 4324

Patent

active

049269437

ABSTRACT:
An aqueous polymeric gel-forming composition which slowly crosslinks to form stable gels for plugging highly permeable zones in subterranean oil-bearing formations. The composition comprises an aqueous solution of a water-dispersible polymer present in a viscosifying amount and a crosslinking agent present in an amount effective to cause gelation of the polymeric solution which comprises a mixture of an aldehyde and a member selected from the group consisting of phenolic ester, naphtholic esters, halogenated phenolic esters and halogenated naphtholic esters.

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