Oil recovery method utilizing a surfactant slug driven by water

Details Oil recovery method utilizing a surfactant slug driven by water Oil recovery method utilizing a surfactant slug driven by water

1979-04-23

1981-02-17

Novosad, Stephen J.

Wells

Processes

With indicating, testing, measuring or locating

166273, E21B 4322

Patent

active

042509610

ABSTRACT:
The efficiency of a low tension surfactant flooding program is improved by first determining the upper and lower boundaries for the range of injected water salinities, that, when intermingled with the injected aqueous surfactant slug will enable the surfactant to resist partitioning into an oil and/or emulsion phase and thereby continue to operate with maximum effectiveness. The water in the driving slug is formulated to fall within the specified salinity boundaries and is then injected at the appropriate time in the sequence of steps in the oil recovery operation.

REFERENCES:
patent: 3175610 (1965-03-01), Osoba
patent: 3343597 (1967-09-01), Gogarty et al.
patent: 3346047 (1967-10-01), Townsend et al.
patent: 3371710 (1968-03-01), Harvey et al.
patent: 3467190 (1969-09-01), Dunlap et al.
patent: 3469630 (1969-09-01), Hurd et al.
patent: 3915230 (1975-10-01), Flournoy et al.
patent: 4008767 (1977-02-01), Waite
patent: 4074755 (1978-02-01), Hill et al.

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