Process for recovering oil from subterranean formations

Details Process for recovering oil from subterranean formations Process for recovering oil from subterranean formations

E - Fixed Constructions

21

B

166/32

E21B 43/22 (2006.01)

Patent

CA 1196571

ABSTRACT Disclosed is a method of using polymer flooding solutions in tertiary oil recovery operations in which polymer loss is substantially reduced by the use of aqueous solutions of polyethylene glycol or polypropylene glycol or both, having a molecular weight of from about 600 to about 6,000. The method is particularly effective under high salinity conditions.

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