Water-alternating-gas flooding of a hydrocarbon-bearing formatio

Details Water-alternating-gas flooding of a hydrocarbon-bearing formatio Water-alternating-gas flooding of a hydrocarbon-bearing formatio

1988-09-02

1989-07-11

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166274, E21B 4318, E21B 4320

Patent

active

048462764

ABSTRACT:
A zone of a subterranean formation containing a low-viscosity crude oil which has already been waterflooded to completion is sequentially flooded with alternating slugs of produced gas and water to produce incremental amounts of the oil. The zone is characterized as a low-permeability zone having mixed geology, i.e., containing two or more rocks of differing permeability randomly distributed throughout the zone.

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patent: 3882940 (1975-05-01), Carlin
Pfister, R. J., "More Oil from Spent Water Drives by Intermittent Air or Gas Injection", Producer's Monthly, pp. 10-12, Sep. 1947.
Champion, J. H., et al., "An Immiscible WAG Injection Project in the Kuparuk River Unit", Society of Petroleum Engineers Paper No. SPE 16719, Sep. 1987.
Gorbanetz, V. K., et al., "Effect of Layered Inhomogeneity of the Formation on Oil Displacement by Enriched Gas," Neftyanoe Khozyaistvoe, No. 8, 1975, pp. 36-37.

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