Riser pipe with auxiliary lines mounted on journals
US7762337B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2006 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Oct 4, 2026 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/1035
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a riser pipe section comprising a main tube (2), at least one auxiliary line element (3) substantially parallel to said main tube (2) and at least two fastening means (7, 8) that connect the ends of said element (3) to main tube (2). The section is characterized in that fastening means (7, 8) allow longitudinal stresses to be transmitted from said element (3) to main tube (2) and in that at least one of fastening means (7, 8) allows at least a rotating motion of said element (3) in relation to said main tube (2), the rotating motion following an axis perpendicular to the plane passing through axis (4) of the main tube and through the axis of auxiliary line element (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.