Steel catenary riser system for marine platform
US5702205A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1995 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Dec 4, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A marine riser system for a bottom-supported platform which can be installed by divers without the use of J-tubes or I-tubes. A flowline, e.g. steel pipeline, is laid between a subsea well or the like, and a jacket of a bottom-supported platform. The free end of the flowline is curved upwardly in a catenary amd is attached to the jacket at a depth which is below the turbulence zone but is one which is substantially above the marine bottom; preferably at a depth at which divers can safely work. After the flowline is structurally attached to the jacket, the free end of the flowline is fluidly connected (e.g. by divers) to a substantially vertical riser section which is clamped within the jacket and which extends through the turbulence zone to the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.