Method and device for linking surface to the seabed for a submarine pipeline installed at great depth
US6461083B1 · kind B1 · utility
25Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Oct 17, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/015
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a bottom-to-surface link system for an underwater pipe installed at great depth, the system comprising:firstly a vertical tower constituted by at least one float (5, 14) associated with an anchor system (6, 8, 16) and carrying at least one vertical riser (9, 15) suitable for going down to the sea bed (18); andsecondly at least one link pipe (4, 3) extending from said float (5, 14) to a surface support (1). According to the invention, said link pipe is a riser whose wall is constituted by a rigid steel tube, and said float (5, 14) is installed at a depth situated below the last thermocline (29).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.