| 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, said strength members having one or more varying characteristics along the length of the umbilical. In this way, the longitudinal strength members in the umbilical can be provided to have for example a higher or greater tensile strength where required, usually nearer to the surface of the water or topside, while having lower or less tensile strength, and usually therefore lower or less weight, where higher or greater strength is not as critical. |
