Gelled aqueous compositions

Details Gelled aqueous compositions Gelled aqueous compositions

E - Fixed Constructions

21

B

31/23

E21B 43/22 (2006.01) C08L 33/26 (2006.01) C09K 8/508 (2006.01) C09K 8/588 (2006.01) C09K 8/62 (2006.01) C08L 77/06 (2006.01)

Patent

CA 1231229

GELLED AQUEOUS COMPOSITIONS Abstract of Disclosure Disclosed are gelled aqueous polymer compositions in brine solutions containing an amount of an anionic partially hydrolyzed polyacrylamide capable of gelling in the presence of a gelling agent characterized in that the gelling agent is a water-soluble cationic polyamide-epihalohydrin resin in an amount sufficient to cause a gel to form and is used, preferably, in brine solutions having a salt concentration from about 1% to about 10% at a pH of about 3 to about 11. The compositions are useful in the recovery of oil and gas by fracturing and in enhanced oil recovery.

493956

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