Inductive shearing of drilling pipe
US9316078B2 · kind B2 · utility
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3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Apr 19, 2016 |
| Priority date | — |
| Expiry date | Jan 14, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23D21/006
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Induction shearing may be used to cut a drillpipe at an undersea well. Electromagnetic rings may be built into a blow-out preventer (BOP) at the seafloor. The electromagnetic rings create a magnetic field through the drillpipe and may transfer sufficient energy to change the state of the metal drillpipe to shear the drillpipe. After shearing the drillpipe, the drillpipe may be sealed to prevent further leakage of well contents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.