riser management system and method for maintaining a selected range of voltage across a plurality of risers

摘要

RISER MANAGEMENT SYSTEM AND METHOD FOR MAINTAINING A SELECTED VOLTAGE BAND IN A RISERS PLURALITY. These are riser management systems, apparatus and methods (30) for maintaining a selected voltage range in a plurality of risers (21) extending between an underwater well rig (23) and a floating vessel (25). . A riser management system (30) may include a single-float tank platform (31) operably coupled to a plurality of risers (21) extending between an underwater well rig (23) and a moored floating vessel (25). ), and a plurality of tensioner units (51) each of which is connected to an upper portion of one of the separate risers (21) to provide tension to each of the risers (21). The single-float tank platform (31) can provide sufficient tension to each of the risers (21) sufficient to compensate for a relative vertical displacement between the risers (21) and the vessel (25) due to vessel movement, which generally affects each one. risers (21) equally within the tolerated, while tensioner units (51) may simultaneously provide voltage to compensate for one or more additional factors that may affect each riser (21) differently.