Method for using thermally stable mobility control agents for ha

Details Method for using thermally stable mobility control agents for ha Method for using thermally stable mobility control agents for ha

1984-06-21

1986-03-04

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

252 855D, E21B 4322

Patent

active

045735336

ABSTRACT:
Copolymers of 2-acrylamido-2-methylpropane sulfonic acid or its salts are used to maintain the viscosity of aqueous solutions thereof in the presence of divalent salt containing-waters during the enhanced recovery of petroleum from sub-terranean petroleum-bearing deposits.

REFERENCES:
patent: 3679000 (1972-07-01), Kaufman
patent: 3800877 (1974-04-01), Knight
patent: 3858652 (1975-01-01), Rhudy et al.
patent: 3945929 (1976-03-01), Martin
patent: 3953341 (1976-04-01), Martin
patent: 4458753 (1984-07-01), Philips et al.

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