Foam and impedance-guided steam injection

Details Foam and impedance-guided steam injection Foam and impedance-guided steam injection

1985-02-04

1986-07-22

Novosad, Stephen J.

Wells

Processes

Graveling or filter forming

166303, 166309, E21B 4304, E21B 4324

Patent

active

046013385

ABSTRACT:
A selective injection of gaseous fluid into a portion of a subterranean reservoir is improved by positioning an impedance to fluid flow in the annulus between a pipe string and a surrounding permeable-walled conduit, ensuring the presence of granular solids between the permeable-walled conduit and the reservoir, injecting the gaseous fluid through the pipe string to a point below the impedance and injecting fluid which is more viscous than the gaseous fluid down the annulus to restrict bypassing of the impedance.

REFERENCES:
patent: 3587741 (1971-06-01), Casey
patent: 3994345 (1976-11-01), Needham
patent: 4445573 (1984-05-01), McCaleb
patent: 4532993 (1985-08-01), Dilgren et al.

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