Method of oil recovery

Details Method of oil recovery Method of oil recovery

1985-12-26

1987-07-14

Novosad, Stephen J.

Wells

Processes

Vibrating the earth or material in or being placed in the...

166177, 1663051, E21B 4325

Patent

active

046796274

ABSTRACT:
A method of recovering petroleum fluids from an underground reservoir comprising the steps of: injecting into the reservoir a substantially water insoluble gas; generating and directing pressure waves into the reservoir to release petroleum fluids retained therein, and producing the released petroleum fluids through a well communicating with the reservoir. In alternate embodiments of the invention production is ceased and additional steps are performed to release additional petroleum fluids from the reservoir. These steps may include: injection of hydrocarbon solvents, or an aqueous solution rich in the sodium ion, or a detergent solution with or without additional pressure wave generation.

REFERENCES:
patent: 3279538 (1966-10-01), Doscher
patent: 3401748 (1968-09-01), Stratton
patent: 3405762 (1968-10-01), Terwilliger
patent: 3422894 (1969-01-01), Brandon
patent: 3525400 (1970-08-01), Pollock et al.
patent: 3754598 (1973-08-01), Holloway, Jr.
patent: 3794114 (1974-02-01), Brandon
patent: 4417621 (1983-11-01), Medlin et al.

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