Method for improving injectivity of fluids in oil reservoirs

Details Method for improving injectivity of fluids in oil reservoirs Method for improving injectivity of fluids in oil reservoirs

1994-07-28

1997-05-27

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166403, E21B 4316

Patent

active

056323360

ABSTRACT:
A method is provided for increasing the rate of injection of flooding fluids into injection wells. A slug of polar solvent or a mixture of polar solvent and non-aqueous flooding fluid is injected into the injection well to displace aqueous and hydrocarbon liquids in the rock surrounding the injection well. Thereafter, the solvent is removed from the vicinity of the injection well by flooding fluid. The process may be repeated following each time water is injected into the injection well.

REFERENCES:
patent: 2623596 (1952-12-01), Whorton et al.
patent: 3033288 (1962-05-01), Holm
patent: 3102587 (1963-09-01), Holbrook et al.
patent: 3220473 (1965-11-01), Holm
patent: 3334688 (1967-08-01), Blackwell et al.
patent: 3557873 (1971-01-01), Owens
patent: 3637015 (1972-01-01), Holm
patent: 4899817 (1990-02-01), Djabbarah

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