Downhole gas separation method and system
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United States of America Patent
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Jun 29, 2004
Grant Date -
Mar 13, 2003
app pub date -
Sep 4, 2002
filing date -
Sep 7, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention is a method and system of separating a multi-component fluid in a wellbore. At least one fluid separation membrane comprising a feed side and a permeate side is incorporated in the wellbore. A flowing stream of the multi-component fluid obtained from a subterranean zone being in fluid communication with the wellbore is passed across the feed side of the membrane at a first pressure. A retentate stream depleted in at least one component compared to the multi-component fluid is withdrawn from the feed side of the membrane and passed to the earth's surface. A permeate stream at a second pressure is withdrawn from the permeate side, in which the permeate stream is enriched in at least one component compared with the multi-component fluid. The second pressure is controlled to maintain the second pressure below the first pressure.
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