Offshore drilling system comprising a high-pressure riser
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United States of America Patent
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Oct 28, 2014
Grant Date -
Jan 20, 2005
app pub date -
Jul 15, 2004
filing date -
Jul 15, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
The offshore drilling system comprises a floating drilling vessel 1, a well drilled in the sea bottom 2, a tubular riser extending the well up to the floating vessel, well sealing elements fastened to the end of the riser at the level of floating vessel 1. The riser comprises tubular elements 12 connected to one another by connectors 13 designed to withstand the internal pressure of the well. Tubulars 12 comprise a metallic tubular body hooped by windings of fibers coated with a polymer matrix. The riser comprises several sections, each section consisting of tube elements whose hoop stress is determined as a function of the depth at which the section lies and of the mechanical strength of said metallic tubular body.
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