Mechanical expansion system
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United States of America Patent
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-
Aug 9, 2011
Grant Date -
Jun 18, 2009
app pub date -
Dec 17, 2007
filing date -
Dec 17, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method of repairing a damaged portion of a casing in a wellbore includes running a bottom hole assembly (BHA) into the wellbore on a conveyance and locating the BHA proximate the damaged portion. The method further includes engaging an inner wall of the casing with a friction member, rotating the conveyance thereby rotating a portion of the BHA, maintaining a portion of the BHA stationary with the friction member. The method further includes pulling the inner string, thereby engaging the inner wall of the casing with an anchor of the BHA and disconnecting a frangible connection with the anchor. An inner string is coupled to an expansion member and pulling the inner string and thereby the expansion member through an expandable tubular expands the expandable tubular into engagement with the inner wall of the casing thereby repairing the damaged portion.
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