Challenges in Shallow Water Riser Design for FPSOs Installed in Campos Basin

摘要

The selection of flexible riser configurations for production systemsconsisting of a turret moored Floating Production Storage andOffloading (FPSO) vessel for shallow waters can be as challenging asfor deep waters. OGX is currently developing the Waimea and theWaikiki fields in shallow waters in the Campos Basin, offshore Brazil,using the turret moored FPSO’s OSX-2 and OSX-3, respectively. Bothfields are identical in relation to the quantity of flexible lines: up to 26lines, including umbilicals and flexible risers, with outer diametersranging from 4inch to 9inch. This paper describes the steps followed todetermine feasible riser configurations. The main challenges arediscussed while different configurations are compared and evaluated.