PULL TUBE STRESS JOINT FOR OFFSHORE PLATFORM
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United States of America Patent
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Issued Date -
Nov 6, 2014
app pub date -
May 1, 2013
filing date -
May 1, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present disclosure provides a system and method for supporting a catenary riser coupled to an offshore platform system including a pull tube and a pull tube stress joint for girth weld stress reduction and improved fatigue performance. A pull tube sleeve is coupled around a welded connection of the pull tube. The sleeve has a larger inside diameter than an outer diameter of the pull tube, and a hardenable fill material is filled into the space between the sleeve and the pull tube so that there is no annular gap between the sleeve and the pull tube. The fill material provides a supportive coupling between the sleeve and the pull tube. The sleeve, the pull tube, or both can also have one or more gripping surfaces formed in or on their surfaces to retain the fill material within the space between the sleeve and the pull tube.
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