Methods and associated apparatus of constructing and installing rigid riser structures
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United States of America Patent
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May 14, 2013
Issued Date -
N/A
app pub date -
Nov 11, 2009
filing date -
Nov 13, 2008
priority date (Note) -
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Abstract
Disclosed is a method of fabricating and installing a riser tower structure, preferably in a welding chamber, and a welding chamber suitable for the method. The method includes fabricating sections of the riser tower structure at a site remote from the site of installation; transporting the sections of the riser tower structure to within the vicinity of the installation site; and assembling together the sections of the riser tower structure in the vicinity of the installation site. The welding chamber includes a plurality of guide means, each providing a guide for one of the elongate elements of the riser tower structure, and floats on the sea surface when in use.
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