Method and apparatus for locating faults in wired drill pipe
US8072347B2 · kind B2 · utility
14Cited by
6References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2006 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Oct 5, 2030 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/0283
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for determining electrical condition of a wired drill pipe includes inducing an electromagnetic field in at least one joint of wired drill pipe. Voltages induced by electrical current flowing in at least one electrical conductor in the at least one wired drill pipe joint are detected. The electrical current is induced by the induced electromagnetic field. The electrical condition is determined from the detected voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.