ENHANCED STEEL CATENARY RISER SYSTEM

摘要

Arrangements for increasing the stability of steel tubular lines (14) of a riser system comprise a steel catenary riser interface buoy (18) and a flexible hose riser (20) to a floating storage/production vessel (10). A cross-link (50) is placed between two or more steel tubular lines (14) in order to enhance the stability of the riser system. The arrangements also include devices (100, 105) for increasing the tension of the steel tubular lines (14) in order to increase the natural frequency of vibration for the lines in order to reduce sensitivity to vortex induced vibration.