Patent ID: 10767790

Abstract:
A marine reel lay method pipeline installation system for laying a flexible pipeline on the seabed a pipeline includes a pipeline launch tower adapted to launch the flexible pipeline in a firing line along said tower; a pipeline guide provided at an elevated position; one or more tensioners, wherein the tensioner frame includes two frame segments with track units, the two frame segments being adapted to be conjoined to each other and being pivotably mounted to said pipeline launch tower about a respective vertical tensioner pivot axis, allowing said two frame segments to be pivotable between a closed flexible pipeline laying configuration; and an open configuration; one or more vertical trolley rails supported by said pipeline launch tower and positioned between said vertical tensioner pivot axes of said two frame segments; a trolley movable along said one or more vertical trolley rails in a vertical trolley path which is unobstructed when said two frame segments are in the open configuration; and a hoisting device being adapted to lower and raise said trolley.