Pipeline recovery tool
US6402428B1 · kind B1 · utility
3Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | May 22, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L1/166
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pipeline recovery tool is made from steel plates welded together instead of forging and machining. The rigged-up tool is lowered over the pipeline and engaged with the pipeline such that a fixed claw engages the collar on the pipeline. An ROV is used to cause a movable dog on the tool to engage the collar and then lock the fixed claw in position. Rigging on the fixed claw side of the tool is released. The pipeline is then lifted to the surface by a lift arm on the first end of the tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.