Patent ID: 9334695
Filing Date: 2016-05-10
CPC Classification: E21B

Claim Text:
1. A hybrid riser system, comprising: a lower riser section secured between a lower subsea anchor and an upper buoyant structure and comprising an elongate support and one or more composite fluid conduits secured to and extending adjacent the elongate support, wherein the one or more composite fluid conduits comprise a composite material formed of at least a matrix and one or more reinforcing elements embedded within the matrix, and wherein at least one of the one or more composite fluid conduits is rigidly secured to the elongate support at one or more locations between the lower subsea anchor and the upper buoyant structure to permit load transference between the at least one of the one or more composite fluid conduits and the elongate support; and an upper riser section extending between the lower riser section and a surface or near surface vessel and comprising one or more flexible conduits in fluid communication with the one or more composite fluid conduits.