Pipelaying
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United States of America Patent
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Jun 30, 2015
Grant Date -
Nov 21, 2013
app pub date -
Jan 24, 2012
filing date -
Jan 28, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
An accessory is disclosed for a subsea pipeline such as an in-line tee having a rigid pipe support frame defining a pipe course and at least one carriage arranged to support a pipe or a fitting attached to a pipe. The carriage is movable with respect to the frame in a direction generally parallel to the pipe course. The carriage is attached to the frame via at least one angularly movable connection that allows a pipe or fitting supported by the carriage to tilt locally with respect to the frame as the pipe bends during laying. Pipe stiffness is therefore independent from the stiffness of the accessory. The stiffened section of the pipe is limited to a short length of the carriage. This is compatible with the small bending radius of the pipe on a stinger.
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