Method and device for stimulating a subterranean zone through th

Details Method and device for stimulating a subterranean zone through th Method and device for stimulating a subterranean zone through th

1990-12-31

1992-07-28

Suchfield, George A.

Wells

Processes

Producing the well

166 50, 166 52, 175 61, E21B 4325, E21B 2100

Patent

active

051334119

ABSTRACT:
A subterranean zone and a neighbouring zone are, respectively, for example, a petroliferous deposit and an underlying aquiferous nappe at a fluid pressure higher than that prevailing in the subterranean zone. A method of stimulating production of effluent from the subterranean zone involves drilling at least one deflected drain (preferably nearly or totally horizontal) through the petroliferous zone, the neighbouring zone and an intermediate layer which separates the petroliferous zone from the aquiferous nappe. The intermediate layer is, for example, slightly permeable because of the presence of heavy and viscous hydrocarbon products. The drain is equipped with a pipe fitted with openings at the subterranean zone and at the neighbouring zone and with packer devices selectively positioned in the pipe. A controlled opening of one packer device during production allows injection of water under pressure into the subterranean zone in order to promote production of effluent therefrom.

REFERENCES:
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patent: 3354952 (1967-11-01), Engle
patent: 4194580 (1980-03-01), Messenger
patent: 4248302 (1981-02-01), Churchman
patent: 4262747 (1981-04-01), Elliot et al.
patent: 4519463 (1985-05-01), Schuh
patent: 4714117 (1987-12-01), Dech
patent: 4807704 (1989-02-01), Hsu et al.
patent: 4945994 (1990-08-01), Stagg
patent: 5016710 (1991-05-01), Renard et al.

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