Compositions – Leather or fur treating
Patent
1984-09-13
1986-08-05
Guynn, Herbert B.
Compositions
Leather or fur treating
523130, 523402, 523409, 523411, 523412, E21B 4326, E21B 33138
Patent
active
046042172
ABSTRACT:
Disclosed are gelled aqueous compositions having (1)(a) a water thickening amount of an anionic or nonionic water soluble polymer in fresh water or brine solutions at a pH of greater than 10; (b) a water thickening amount of an anionic water soluble polymer having carboxylate functionality and a cellulose backbone in brine solutions at an acidic pH; or (c) a water thickening amount of (i) an anionic water soluble polymer having carboxylate functionality and a cellulose backbone or (ii) a copolymer of sodium acrylate having from about 10% to about 90% acrylate content, in brine solutions at neutral to about 10 pH; and (2) a water soluble cationic poly(diallylamine)-epichlorohydrin resin in an amount sufficient to cause gelation and form the gelled composition. The compositions are useful in the recovery of oil and gas by fracturing and as a matrix plugging agent in enhanced oil recovery.
REFERENCES:
patent: 3700623 (1972-10-01), Keim
patent: 3833531 (1974-09-01), Keim
patent: 4018286 (1977-04-01), Gall et al.
patent: 4033415 (1977-07-01), Holtmyer et al.
patent: 4043921 (1977-08-01), Hessert et al.
patent: 4110230 (1978-08-01), Hessert et al.
patent: 4110231 (1978-08-01), Swanson
patent: 4409110 (1983-10-01), Borchardt et al.
patent: 4487866 (1984-12-01), Almond et al.
Lukach Carl
Sun Shao-Tang
Guynn Herbert B.
Hercules Incorporated
Horn Joanna L.
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