Polymerflood process

Details Polymerflood process Polymerflood process

1985-07-31

1986-12-30

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166275, 166274, E21B 4316

Patent

active

046321853

ABSTRACT:
A polymerflood oil recovery process comprising the use of ammonium salts in aqueous polymer slugs to stabilize the solution viscosity of said slugs throughout a polymerflooding process in which adverse subterranean conditions are encountered, such as high temperature, high salinity and/or high concentrations of "hardness" ions.

REFERENCES:
patent: 3506707 (1970-04-01), Miller et al.
patent: 3544597 (1970-12-01), Killam
patent: 3547899 (1970-12-01), Arit
patent: 3679000 (1972-07-01), Kaufman
patent: 3898037 (1975-08-01), Lange
patent: 3931089 (1976-01-01), Karl
patent: 3948783 (1976-04-01), Szabo et al.
patent: 4326969 (1982-04-01), Hunter

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