Crosslinked vinylamine polymer in enhanced oil recovery

Details Crosslinked vinylamine polymer in enhanced oil recovery Crosslinked vinylamine polymer in enhanced oil recovery

1990-06-20

1992-02-04

Stoll, Robert L.

Compositions

Leather or fur treating

252 8554, 523130, 166271, 166281, 166282, 166283, 166285, 166308, C09K 702, E21B 4300

Patent

active

050857878

ABSTRACT:
The production of oil or gas from a subterranean formation is enhanced by injecting into the formation, such as in acidized fracturing, an aqueous fluid containing as a viscosifier a crosslinked vinylamine polymer. Acidizing fluids are provided containing HCl and a viscosifying amount of a gel of the crosslinked polymer, preferably poly(vinylamine) crosslinked with a diisocyanate, a polyepoxide or epichlorohydrin.

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