Riser apparatus assembly and method of installing same

摘要

A riser apparatus and method according to which an anchor is installed on the sea bed and a riser conduit is pivotally mounted on the anchor. The riser conduit is provided with end connectors for connection to an upper riser section leading, respectively, to a production platform and a lower riser section leading to a wellhead or subsea storage or export facility. The riser conduit is preformed into a predetermined curved shape and is provided with stiffening webs to safeguard its rigidity, so that it substantially retains its predetermined shape when movements are transmitted through the riser conduit from the upper riser section to the lower riser section, or conversely.