Enhanced oil recovery from heterogeneous reservoirs

Details Enhanced oil recovery from heterogeneous reservoirs Enhanced oil recovery from heterogeneous reservoirs

1994-04-11

1995-11-14

Suchfield, George A.

Wells

Processes

Distinct, separate injection and producing wells

E21B 4322

Patent

active

054657903

ABSTRACT:
A process for recovering oil from a multiple-layered heterogeneous reservoir with a higher oil saturation in the lower permeability layers than in the higher permeability layers. An aqueous surfactant solution is injected into the formation, where it imbibes into the lower permeability layers and displaces a first quantity of oil into the higher permeability layers. Next, a first aqueous fluid is injected to sweep the displaced oil from the higher permeability layers into at least one production well. A gas is injected into the formation to displace a second quantity of oil from the lower permeability layers. The second aqueous fluid is injected to sweep the displaced oil into at least one production well. The process may be repeated one or more times.

REFERENCES:
patent: 3386506 (1968-06-01), Quance
patent: 3529668 (1970-09-01), Bernard
patent: 3653440 (1972-04-01), Reisberg
patent: 3882940 (1975-05-01), Carlin
patent: 4004637 (1977-01-01), Needham et al.
patent: 4113011 (1978-09-01), Bernard et al.
patent: 4287950 (1981-09-01), Baker et al.
patent: 4380266 (1983-04-01), Wellington
patent: 4739831 (1988-04-01), Settlemeyer et al.
patent: 4842065 (1989-06-01), McClure
patent: 4846276 (1989-07-01), Haines
patent: 4856589 (1989-08-01), Kuhlman et al.
patent: 4860828 (1989-08-01), Oswald et al.
patent: 5042580 (1991-08-01), Cullick et al.
J. B. Lawson and J. Reisberg, "Alternate Slugs of Gas and Dilute Surfactant for Mobility Control During Chemical Flooding," SPE 8839, presented at First Joint SPE/DOE Symposium on Enhanced Oil Recovery, Tulsa, Okla., Apr. 20-23, 1980.
G. G. Bernard, et al., "Use of Surfactant to Reduce CO2 Mobility in Oil Displacement," Society of Petroleum Engineers Journal, Aug. 1980, pp. 281-292.

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