Umbilical

摘要

An umbilical for use in the offshore production of hydrocarbons, and in particular to a power umbilical for use in deep water applications is described, comprising a plurality of longitudinal strength members, wherein at least one longitudinal strength member comprises rope enclosed within a tube. In this way, the or each longitudinal strength member being a rope and tube combination achieves the synergistic benefit of favorable mechanical properties in the axial direction, with favorable mechanical properties in the radial direction during tensioning or the like of the umbilical, especially during installation.

主权项

1. An umbilical comprising:
a plurality of longitudinal strength members, at least one longitudinal strength member comprising a rope enclosed within a tube; the rope made of PBO or other organic materials and has a strength to weight ratio of at least 0.6×106 Nm/kg; and the tube comprises at least one of the materials of the group comprising: carbon steel and stainless steel, and the tube is watertight.