In situ reversible crosslinked polymer gel used in hydrocarbon r

Details In situ reversible crosslinked polymer gel used in hydrocarbon r In situ reversible crosslinked polymer gel used in hydrocarbon r

1990-10-16

1992-01-21

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166300, 252342, 252358, E21B 4322, E21B 33138

Patent

active

050820567

ABSTRACT:
Reversible crosslinked polymer gels are prepared by adding a degelling agent precursor to a gelation solution during initial preparation. The precursor is integrated into the resulting gel and undergoes hydrolysis to transform into an active degelling agent which reverses the gel. The process has specific utility to hydrocarbon recovery applications where in situ gels are difficult to contact with conventional reversing agents.

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T. P. Lockhart, "A New Mild Chemical Method for the Degelation of Cr+3-Polyacrylamide Gels" May 26, 1989.

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