Flexible Riser Installation Challenges

The Soroosh / Nowrooz integrated field development is located in the Persian Gulf with the Nowrooz satellite field located 50km to the north of Soroosh. The processed fluids are exported to an FSU in 45m of water (LAT) for storageand off-take by shuttle tankers. The present development phase comprises the export of crude from each of the fields toa single FSU (KHALIJ-e-FARS). Petro Barasun International Company (PBI) was selected to execute the installation of flexible riser between subseapipeline PLEM and FSU TURRET. The client in this project is Iranian Offshore Oil Company and the project consist ofinstallation of 4×9 oil FFRP export Pipeline to new FSU with about 200 meters length with a related PLEM (Pipeline End Manifold. The purpose of the paper is to define the primary considerations affecting flexible riser installation and to determine further and highlight which areas of product specification may be addressed with a view to improving the economics of installation operations. The paper first defines flexible riser characteristics and identifies the necessary installation hardware prior to providing commentary on the methods of installation. A basic cost model is introduced to illustrate the major cost elements of the installation process. Areas of potential hazard and risk are briefly highlighted and a summary of conclusions is provided.

کلیدواژه ها:

flexible riser installation ، installation methods ، bending stiffness ، installation economics