Oil recovery process involving the injection of thickened water

Details Oil recovery process involving the injection of thickened water Oil recovery process involving the injection of thickened water

1978-05-01

1980-09-16

Guynn, Herbert B.

Compositions

Leather or fur treating

166275, 260 296HN, 525280, 525323, 526265, E21B 4322

Patent

active

042228816

ABSTRACT:
Waterflood oil recovery process involving the use of an amphoteric polyelectrolyte as a thickening agent for mobility control. The amphoteric polyelectrolyte is a copolymer of a quaternary vinyl pyridinium sulfonate and a water-insoluble alpha olefin or hydrogenated diene. Specifically disclosed are vinyl pyridinium sulfonate-styrene block copolymers. The amphoteric polyelectrolytes are stable in high temperature and high brine environments.

REFERENCES:
patent: 3085063 (1963-04-01), Turbak
patent: 3399249 (1968-08-01), Hostetler
patent: 3744566 (1973-07-01), Szabo et al.
patent: 3948783 (1976-04-01), Szabo et al.
patent: 3984333 (1976-10-01), van de Kraats et al.
Hart et al., Article in Journal of Polymer Science, Vol. XXVIII, Issue No. 118, 1958, pp. 638-640.

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