C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/1317, 31/22,
C08L 5/00 (2006.01) C08L 61/20 (2006.01) C09K 8/512 (2006.01) E21B 43/22 (2006.01) E21B 49/00 (2006.01)
Patent
CA 2029238
F-5467L PROGRAMMED GELATION OF POLYMERS USING MELAMINE RESINS ABSTRACT OF THE DISCLOSURE A process for use with a polymer which is crosslinked by reaction with an amino resin, which comprises the steps of determining a period of time within which full gelation of the polymer is to be achieved; preparing a gel-f a aqueous-based mixture comprising the polymer, a rapid amino resin crosslinking agent and a delayed amino resin crosslinking agent, the gel-forming aqueous-based mixture capable of complete gelation within the period of time so determined; partially gell mg the aqueous-based mixbure by reacting the polymer wlth the rapid amino resin crosslinking agent which is effective to oomplete the partial gelation by crosslinking the polymer within four hours; and fully gell m g the aqueous-based mixture by reacting the polymer with the delayed amino resin crosslinking the polymer within the period of time so determined . A method of enhancing the recovery of oil from a subterranean oil-bearing formation is also provided.
Gowling Lafleur Henderson Llp
Mobil Oil Corporation
LandOfFree
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