Telescopic guide pipe for offshore drilling
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United States of America Patent
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Issued Date -
Jul 14, 2005
app pub date -
Dec 6, 2004
filing date -
Jun 19, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a guide device for an off-shore drilling installation comprising at least one drilling riser extending from a floating support to a said guide device at the sea bottom, said drilling being performable from said floating support via said drilling riser using a drill string fitted at its end with drilling tools. According to the invention, said telescopic guide device comprises a telescopic guide pipe comprising coaxial telescopic pipe elements about an axis, the smallest-diameter innermost telescopic pipe element being fitted at its end for breaking up the ground suitable for progressively burying said telescopic guide pipe in the ground so as to enable a drilling tool to be guided more deeply into the ground.
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