Water intake riser assembly for an off-shore structure, and method of producing a liquefied hydrocarbon stream and method of producing a vaporous hydrocarbon stream

摘要

Described is a water intake riser assembly (105) that is suspendable from an off-shore structure (102). The water intake riser assembly comprises at least a first tubular conduit (106) extending along a length direction. A distal portion of the first tubular conduit comprises a water intake section (109). The water intake section comprises a tubular section having a side wall circumferencing a round the length direction and defining a flow passage in the length direction with an aperture having a first transverse cross sectional area. The side wall is perforated with a plurality of through holes (405) forming a plurality of water intake openings. An aggregate area defined by the plurality of through holes is larger than the first transverse cross sectional area.