Marine steel catenary riser system
US5639187A · kind A · utility
39Cited by
22References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Oct 12, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A marine riser system which effectively combines rigid (e.g. steel catenary risers) with flexible flowlines. Basically, the steel catenary risers, which are merely the end portion of submerged rigid flowlines, are curved upward through the water in a gentle catenary path to a large, submerged buoy, which, in turn, is moored to the bottom by tension leg tether lines at a depth below the turbulence zone of the water. Flexible flowlines are fluidly connected to the steel catenary risers at the buoy and extend upward through the turbulence zone to the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.