Deepwater disconnectable turret system with improved riser configuration
US9797203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2014 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | May 13, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B19/004
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A system for transporting hydrocarbons from reserves located under the sea floor to a turret connected to a hydrocarbon production vessel floating at the sea surface, the hydrocarbons being transferred through at least one rigid catenary riser extending from the sea floor to a buoy, the system for transporting hydrocarbons includes an upper section of the at least one substantially rigid riser directly attached to the buoy and provided with fairings, a middle section of the rigid riser is provided with buoyancy modules so to give it a lazy wave shape and a lower section of the substantially rigid riser is in contact with the seafloor at a distance X from the buoy vertical axis that is smaller than a distance Y between the buoy vertical axis and the mooring lines anchoring elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.