Expandable isolation packer
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United States of America Patent
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Oct 8, 2013
Grant Date -
Sep 13, 2012
app pub date -
Mar 9, 2011
filing date -
Mar 9, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An expandable packer features a sealing element in an exterior recess that is straddled by projections or bumps. Upon expansion the bumps move out against the borehole wall as an anchor support. Optionally, the bumps may be covered with a sealing material and may be constructed to assist in their radial movement to the borehole wall as a result of expansion particularly if the mandrel is expanded in compression. The bumps are not necessarily expanded with the swage and their radial growth can be induced from longitudinal shrinkage resulting from radial expansion.
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