Safety joint and riser
US9091127B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 2011 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Mar 11, 2032 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A safety joint to be included in a riser between a floating structure and a subsea installation at a location in the riser above a stress joint where it will be subjected to minimum bending loads. The safety joint includes a first riser coupling at its upper end for connection to a corresponding riser coupling of a riser joint and a second riser coupling at its lower end for connection to a corresponding riser coupling of a riser joint or stress joint. An emergency disconnect package with an emergency disconnect coupling and a retainer valve unit is arranged between the upper end and the lower end of the safety joint. A riser including such a safety joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.