Riser pipe section equipped with an inner locking ring and with a clearance adjustment means between the auxiliary line elements and the main tube elements
US10072466B2 · kind B2 · utility
1Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2015 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Apr 16, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention relates to a riser section (4) equipped with an inner locking ring (11). According to the invention, auxiliary line elements (7) are secured to one end of main tube (6) and they are mobile with respect to the other end of main tube (6) through the agency of a sliding pivot connection, whose relative translational motion is limited by a clearance adjustment means (15). The invention also relates to a riser consisting of several sections (4) and to the use of the riser for carrying out an offshore drilling operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.