Expander for expanding a tubular element
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United States of America Patent
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Nov 28, 2006
Issued Date -
N/A
app pub date -
Mar 8, 2004
filing date -
Mar 8, 2004
priority date (Note) -
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Abstract
A duplex expansion apparatus for expanding a wellbore tubular to two different diameters from an initial diameter is provided. The duplex expansion apparatus includes: a first diameter expansion cone that is, in a relaxed state, of a diameter less than the internal diameter and in an expanded state of a diameter greater than the internal diameter; a second diameter expansion cone that is, in a relaxed state, of a diameter less than the internal diameter and in an expanded state of a diameter greater than the diameter of the first diameter expansion cone in the expanded state; and an assembly mandrel that is capable of transferring both the first diameter expansion cone and the second diameter expansion cone into their expanded states.
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