Application of multiphase generation process in a CO.sub.2 flood

Details Application of multiphase generation process in a CO.sub.2 flood Application of multiphase generation process in a CO.sub.2 flood

1990-03-12

1991-09-10

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166274, E21B 4322

Patent

active

050465619

ABSTRACT:
A high temperature reservoir is preconditioned by injection of cold water until a zone around the injection well reaches a temperature suitable for multiphase generation conditions. A subsequent carbon dioxide injection creates a multiphase slug near the wellbore region. The multiphase slug is propagated through the reservoir by continued injection of CO.sub.2 or water alternating with gaseous CO.sub.2.

REFERENCES:
patent: 4513821 (1985-04-01), Shu
patent: 4617996 (1986-10-01), Shu
patent: 4678036 (1987-07-01), Hartman et al.
patent: 4766558 (1988-08-01), Luks et al.
patent: 4846276 (1989-07-01), Haines

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