Device for heating and thermally insulating at least one undersea pipeline
US7367398B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2004 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Mar 22, 2024 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/122
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus for heating and lagging at least one main undersea pipe for conveying a flow of hot effluent. The apparatus includes a covering of thermally insulating material surrounding the main pipe(s), and covered by a leaktight outer protective casing and an internal chamber coaxial with the outer casing. The insulating covering surrounds the internal chamber in an annular space between the outer casing and the internal chamber. The main pipe is contained inside an internal chamber that is preferably cylindrical in shape. A heat-transfer fluid having a maintained temperature surrounds the main pipe contained inside the internal chamber and is circulated inside the internal chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.