Crosslinked polyvinyl amine copolymer gels for use under harsh r

Details Crosslinked polyvinyl amine copolymer gels for use under harsh r Crosslinked polyvinyl amine copolymer gels for use under harsh r

1990-08-10

1992-07-28

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524510, C09K 700, C08J 300, C08K 320, C08L 6104

Patent

active

051341760

ABSTRACT:
A gel-forming composition capable of plugging highly permeable zones in a subterranean formation. The composition comprises water, a viscosifying amount of a water-dispersible polyvinyl amine copolymer and a crosslinking agent which is a mixture of an aldehyde and a phenolic component in an amount effective to cause gelation of the aqueous solution of the copolymer. The resultant gel is exceptionally thermally stable and, therefore, can be used as an effective profile control agent in all enhanced oil recovery operations, including steam flooding.

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