Method of deepwater pipelay
US4992001A · kind A · utility
26Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1990 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Aug 17, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L1/18
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of laying pipeline in water greater than 1000 feet deep is disclosed whereby the pipeline is assembled on board a lay barge and then, during deployment, is bent beyond typical elastic bending limitations and Conventional Lay bending strain limitations while passing along a stinger where it is subsequently reverse bent to remove any permanent curvature. Upon further deployment, a generally horizontal axial load is maintained on the pipeline as it come to rest upon the sea floor such that the final in-situ residual bending curvature of the pipeline is nearly zero or falls within an acceptable range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.