公开(公告)号：GB2415727B

公开(公告)日：2006-04-12

申请号：GB0520758

申请日：2002-12-04

Applicant: DEEPWATER COMPOSITES AS

Inventor： SALAMA MAMDOUH

IPC: E21B17/01 ,  E21B17/08 ,  F16L33/01

Abstract: The present invention discloses redundant sealing systems for composite risers having metal liner assemblies and methods of preventing interior fluid leakage to the outside of composite risers. An elastomeric seal is formed between an elastomeric tip provided on the end of a metal to composite interface (MCI) of the liner assembly and an elastomeric shear ply provided over the liner assembly. The elastomeric seal and a mechanical seal between the MCI and a transition ring which secures the liner to the MCI, provides a dual sealing system for the composite riser to prevent leakage of interior fluids. In the event that the integrity of the mechanical seal or the integrity of the liner is compromised, the elastomeric seal would prevent leakage of the fluid to the outside of the composite riser.

公开(公告)号：GB2415727A

公开(公告)日：2006-01-04

申请号：GB0520758

申请日：2002-12-04

Applicant: DEEPWATER COMPOSITES AS

Inventor： SALAMA MAMDOUH

IPC: E21B17/01 ,  E21B17/08 ,  F16L33/01

Abstract: A composite riser 100 is joined to an end connector at a Metal to Composite Interface (MCI) 230. A transition ring 270 is secured to a lining section 110 and sealed against the end of the MCI, and an elastomeric seal 264 is provided on the end of the MCI. An elastomeric shear ply extends over the liner 110, transition ring 270, seal 264 and MCI 230. The shear ply and seal are cured after assembly so that they bond to form a seal along their interface 266. This seal can be provided in addition to the seal formed by conforming surfaces 272.