marine pipe laying method and system for installing an offshore pipe

摘要

METHOD AND MARINE PIPE SEATING SYSTEM FOR INSTALLING AN OFF COAST PIPE. Marine pipe laying method and system for installing an offshore pipe (1), which includes one or more fittings (10). The method includes the steps of providing a ship (2), launching the pipe (1) in a firing line from the ship (2) towards the seabed, fitting the pipe (1) with a gripping device ( 5b) which is connected to the ship (2) and adapted to support the weight of the previously thrown tubing (1), and move the fitting (10) to the firing line to a position above the gripping device (5b). Then the fitting (10) is connected to the tubing (1) above the gripping device (5b) while the tubing (1) is held by the gripping device (5b). It follows that the fitting (10) and the launched piping (1) connected to it and releasably secured a controlled load lifting device (5) and the weight of the fitting (10) and the launched piping (1) connected it is transferred from the gripping device (5b) to the load-controlled lifting device (5) while the fitting (10) and the piping (1) connected thereto remain in the firing line. Finally, the gripping device (5b) is detached from the tubing (1) and moved out of the trigger line. Then the fitting (10) and the launched piping connected thereto are lowered along the firing line by the controlled load lifting device (5).