Use of a buried flexible pipeline
US6085799A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Jul 22, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L11/16
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The use of a buried or covered flexible seabed pipeline for transporting fluids is disclosed. The pipeline comprises a sealing barrier (3) and reinforcing layers (4, 5) capable of withstanding mechanical stress and arranged around said sealing barrier. The reinforcing layers consist of at least two crosswise-arranged reinforcing plies (4, 5) of wires helically wound at respective winding angles a.sub.i to the longitudinal axis of the pipeline, such that they comply with the following relationships: when i=1, 2, . . . , 52.degree..ltoreq.a.sub.i .ltoreq.58.degree.. The arithmetic mean a.sub.m of said winding angles a.sub.i complies with the following relationship: 53.degree..ltoreq.a.sub.m .ltoreq.57.degree..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.