Telescoping conduits with shape memory foam as a plug and sand control feature
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United States of America Patent
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May 21, 2013
Grant Date -
Dec 29, 2011
app pub date -
Jun 23, 2010
filing date -
Jun 23, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A string with a plurality of telescoping members has the telescoping members initially sealed preferably with a shape memory foam so that the foam is initially impervious when run into a subterranean location. Then, after extension of the telescoping members, using pressure in the string, the foam gets above its transition temperature and grows axially in a passage of the telescoping members, to the point of becoming porous so that it can serve as a sand control or other debris exclusion device. Plates with openings can be deployed at opposed ends to maintain the assembly in position when subjected to differential pressure as flow goes through the foam. Alternative materials are envisioned.
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Family
International Classification(s)
Cited Art Landscape
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