underwater pipe installation system for laying an offshore pipe and / or installing an underwater riser, and methods of installing an offshore pipe and / or underwater riser submarine

摘要

SUBMARINE PIPING INSTALLATION SYSTEM FOR SETTING AN OUTSIDE COSTA PIPE AND / OR INSTALLING A SUBMARINE ASCENDING PIPE, AND METHODS OF INSTALLING A OUT-OF-COSTA PIPE AND / OR TUBE TUBE AND A TUBE PIPE SUBMARINE. An underwater piping installation system for laying off-shore piping and / or installing a subsea riser, the system at least allowing. The execution of the reel laying method, where the system comprises: one or more storage reels (8) for pipe storage (11), a pipe launch tower (20), a pipe guide (27) in a elevated position to guide said pipe along said tower, one or more tractors (40, 50), each tractor comprising a tractor frame and multiple tracks supported by said tractor frame (41, 51), said tracks being adapted to engage the pipe and support at least part of the weight of the launched pipe, the tractor frame (41, 51) being supported by the mentioned tower via an associated support set. The support set is adapted to allow the tractor frame (41, 51) to move between an active position, in which the pipeline release path extends through the tractor frame (41, 51) between the tracks, and a stowed and non-operational position.