Method for favoring the injection of fluids in producing zone
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United States of America Patent
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May 18, 1993
Grant Date -
N/A
app pub date -
Nov 4, 1991
filing date -
Nov 2, 1990
priority date (Note) -
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status (Latency Note)
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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.
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