Brine tolerant polymer for oil recovery applications

Details Brine tolerant polymer for oil recovery applications Brine tolerant polymer for oil recovery applications

1985-12-24

1987-11-24

Schofer, Joseph L.

Wells

Processes

Distinct, separate injection and producing wells

166274, 166275, 1663051, 252 8554, 5253294, 525 5411, 525379, E21B 4316

Patent

active

047082054

ABSTRACT:
A beta-alanine-type branched partially hydrolyzed polyacrylamide is added to an aqueous injection fluid to increase the viscosity of the fluid. The polymer resists plugging of the wellbore face and/or matrix pores and is brine tolerant when injected into a subterranean hydrocarbon-bearing formation.

REFERENCES:
patent: 3880764 (1975-04-01), Donham
patent: 4268403 (1981-05-01), Buckman et al.
patent: 4341265 (1982-07-01), Blair, Jr.
patent: 4430481 (1984-02-01), Hunter
patent: 4485021 (1984-11-01), Purcell et al.
patent: 4561502 (1985-12-01), Norton et al.

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