Chemical waterflood process development

Details Chemical waterflood process development Chemical waterflood process development

1978-11-06

1980-04-01

Novosad, Stephen J.

Wells

Processes

Using microorganisms

166273, E21B 4322

Patent

active

041956893

ABSTRACT:
A waterflood process wherein a slug of biopolymer is injected into a formation, followed by a slug of synthetic polymer. The biopolymer slug protects the synthetic polymer from degradation due to presence of salts or surfactants in the formation.

REFERENCES:
patent: 3707187 (1972-12-01), Knight
patent: 3724545 (1973-04-01), Knight
patent: 3844350 (1974-10-01), Knight et al.
patent: 3850244 (1974-11-01), Rhudy et al.
patent: 3919092 (1975-11-01), Norton et al.
patent: 4008766 (1977-02-01), Savins
patent: 4011910 (1977-03-01), Rhudy et al.
patent: 4018281 (1977-04-01), Chang
patent: 4039028 (1977-08-01), Knight

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