Method for favoring the injection of fluids in producing zone

Details Method for favoring the injection of fluids in producing zone Method for favoring the injection of fluids in producing zone

1991-11-04

1993-05-18

Novosad, Stephen J.

Wells

Processes

Heating, cooling or insulating

166 50, 166269, 166272, E21B 4324

Patent

active

052112403

ABSTRACT:
In a drain (2) fitted with a perforated casing (3), a fluid under pressure is injected in various locations by selectively changing the position of the injection points in relation to these locations by means of a pipe (4). The position of the injection ports and/or the area thereof is varied through the selective opening of valves or by displacing an injection pipe (4). The density of the perforations of the casing (3) and/or of the injection pipe (4) can also be varied. A sweeping of the reservoir crossed by the drain is achieved by injecting for example a hot gaseous fluid such as steam under pressure and the density of the perforations (11) of a pipe (4) is for example selected in such a way that the amount of heat transferred to the formation is substantially constant along the drain.

REFERENCES:
patent: 4248302 (1981-02-01), Churchman
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patent: 4460044 (1984-07-01), Porter
patent: 4508172 (1985-04-01), Mims et al.
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patent: 4620594 (1986-11-01), Hall
patent: 4696345 (1987-09-01), Hsueh
patent: 4707751 (1987-11-01), Ozaki et al.
patent: 4754811 (1988-07-01), Ledent et al.
patent: 5054551 (1991-10-01), Duerksen
patent: 5090481 (1992-02-01), Pleasants

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