Method of stabilizing polymer solutions in a subterranean...

Details Method of stabilizing polymer solutions in a subterranean... Method of stabilizing polymer solutions in a subterranean...

E - Fixed Constructions

21

B

31/21

E21B 43/22 (2006.01) C08F 120/56 (2006.01) C09K 8/588 (2006.01)

Patent

CA 2019057

D# 79,225 - F ABSTRACT Petroleum is extracted from a subterranean reservoir by injecting into injection wells an aqueous polymer solution wherein the polymer is stabilized against viscosity deterioration by creating the reservoir with an effective amount of urea in an aqueous solution. .029, CEC:onb (TXDC012) D#79225

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