| 摘要 |
An umbilical for use in the offshore production of hydrocarbons, the umbi lical comprising a plurality of functional elements contained within an oute r sheath, at least one of said functional elements comprising a multicore el ectric cable, said multicore electric cable comprising a plurality of insula ted electric conductors electrically insulated from each other and assembled together in a helical or S/Z manner, said multicore electric cable further comprising a protective polymer sheath surrounding said plurality of insulat ed electric conductors, said multicore electric cable further comprising a t ubular metallic layer located inside said protective polymer sheath and surr ounding said plurality of insulated electric conductors. |
