Gravity assisted solvent flooding process

Details Gravity assisted solvent flooding process Gravity assisted solvent flooding process

1981-08-11

1983-08-16

Novosad, Stephen J.

Wells

Processes

Specific pattern of plural wells

166263, 166272, E21B 4324, E21B 4330, 166

Patent

active

043986021

ABSTRACT:
This invention relates to a method where the soak time, required for solvent and crude oil mixing in the gravity assisted solvent flooding process, is significantly reduced. This is accomplished by inducing vertical flow of solvent into the heavy crude oil part of the reservoir through the use of intermediate wells drilled between injection and production wells and completed in the top of the oil reservoir. Steam or gas may be used prior to the introduction of the solvent to reduce the resistance to subsequent solvent flow.

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patent: 3459265 (1969-08-01), Buxton et al.
patent: 3500916 (1970-03-01), van der Knapp et al.
patent: 3983939 (1976-10-01), Brown et al.
patent: 4007785 (1977-02-01), Allen et al.
patent: 4026358 (1977-05-01), Allen
patent: 4068716 (1978-01-01), Allen
patent: 4166503 (1979-09-01), Hall et al.

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