Waterflooding process employing anionic-nonionic copolymer

Details Waterflooding process employing anionic-nonionic copolymer Waterflooding process employing anionic-nonionic copolymer

1977-05-23

1978-10-17

Guynn, Herbert B.

Compositions

Leather or fur treating

166274, 166275, 260879, 260880R, 260880B, E21B 4322

Patent

active

041208013

ABSTRACT:
This specification discloses a waterflooding process for producing oil from an oil-containing subterranean formation that is penetrated by an injection well and a production well. An aqueous solution of a water soluble copolymer having segments formed of blocks of an aromatic monomer and blocks of an olefinic monomer chemically modified to have an anionic function on the olefinic segments is injected into the formation to improve the recovery of oil therefrom.

REFERENCES:
patent: 2802785 (1957-08-01), Nowak et al.
patent: 3085063 (1963-04-01), Turbak
patent: 3116791 (1964-01-01), Sandiford et al.
patent: 3583486 (1971-06-01), Stratton
patent: 3607979 (1971-09-01), Winkler
patent: 3642953 (1972-02-01), O'Neill et al.
patent: 3984333 (1976-10-01), VAN DE Kraats et al.
Foster et al., Article in Journal of Petroleum Technology, vol. 25, Feb. 1973, pp. 205-210.

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