Process and system for the installation of pipelines in shallow or very shallow water
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United States of America Patent
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Issued Date -
Oct 20, 2005
app pub date -
Feb 24, 2005
filing date -
Dec 20, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A process for pipeline installation in shallow or very shallow water. The process includes trench excavation used for positioning/guiding pipes ('pre-trenching'); optional dragging of the pipes during the pre-trenching; cleaning and maintenance of the trench in the dragging; underground insertion of the pipes positioned at a required level ('post-trenching'); possible covering of the inserted pipes ('back-filling'). The operations are effected by coordinated use of vehicles of: a tracked transport vehicle or a vehicle with tires; an autonomous power and control module to power the vehicle, equipped with an operator cabin, being either positioned on the vehicle chassis or detached and placed on a floating craft, connected to the vehicle by an umbilical duct. The vehicles are assigned to transport one or more equipment items each having one of the following functions: 'pre-trenching', 'trench maintenance', 'post-trenching', possibly dragging and/or 'back-filling', so that all the equipment having the above functions is present within the whole group of vehicles used.
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