Rate-controlled polymer gelation process for oil recovery applic

Details Rate-controlled polymer gelation process for oil recovery applic Rate-controlled polymer gelation process for oil recovery applic

1986-10-14

1988-09-13

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166 50, 166294, 166300, 523130, E21B 33138

Patent

active

047702451

ABSTRACT:
A process for controlling the gelation rate of a carboxylate-containing polymer used in oil recovery applications. A gel is prepared by mixing a single aqueous gelation solution at the surface made up of the polymer and a crosslinking agent containing a chromic carboxylate complex and an inorganic chromic salt. The concentration of the inorganic chromic salt is selected at a level which achieves the desired rate of gelation for a given application.

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