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U.S. Department of Energy
Office of Scientific and Technical Information

Recovery of petroleum by flooding with viscous aqueous solutions of acrylamide-diacetone acrylamide copolymers

Patent ·
OSTI ID:7093286

A viscous aqueous solution of the unhydrolyzed form of an acrylamide-diacetone acrylamide copolymer is used in polymer flooding, for secondary oil recovery. This particular copolymer does not exhibit reduced mobility reduction characteristics in solutions containing divalent alkaline earth metal salts, as is generally the case for acrylic type polymers. Hence the produced brines can be utilized as carrier liquids for the treating fluid.

Assignee:
Union Oil Co. of California
Patent Number(s):
US 3900069
OSTI ID:
7093286
Country of Publication:
United States
Language:
English