Methods for recovery of oil

Details Methods for recovery of oil Methods for recovery of oil

1980-11-20

1982-05-11

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166295, E21B 33138, E21B 4322

Patent

active

043288642

ABSTRACT:
Methods for the recovery of oil are provided, which include selectively plugging the water-rich portions of an oil-producing formation by injecting into the formation a swelling polymer.

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patent: 3336979 (1967-08-01), Ingraham et al.
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patent: 3749174 (1973-07-01), Friedman et al.
patent: 3811508 (1974-05-01), Friedman
patent: 3841401 (1974-10-01), Restaino et al.
patent: 3865189 (1975-02-01), Friedman
patent: 3866684 (1975-02-01), Friedman
patent: 3866685 (1975-02-01), Friedman
patent: 4276935 (1981-07-01), Hessert et al.

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