System and methods for tubular expansion
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United States of America Patent
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Dec 6, 2011
Grant Date -
Jul 3, 2008
app pub date -
Dec 21, 2007
filing date -
Jan 3, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and apparatus enable expanding tubing in a borehole of a hydrocarbon well. According to some embodiments, an expander device includes a collapsible swage formed of collets, at least one slip arrangement and a hydraulic jack to stroke the swage through tubing to be expanded. In operation, expanding tubing may include securing an expansion tool to the tubing, lowering the tool and tubing into a borehole, actuating a collapsible expander of the expansion tool to an extended configuration, and supplying fluid pressure to a jack coupled to the expander thereby moving the expander through the tubing which is held by at least one of first and second tubing holding devices disposed respectively ahead of the expander and behind the expander.
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