Logging of cased well by induction logging to plot an induction log of the well
US5426367A · kind A · utility
43Cited by
8References
2Claims
0Family size
Inventors
Key dates
| Filing date | Jan 12, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Jan 12, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Well logging method and apparatus which provides a magnetic saturation signal to at least a transmitter and one receiver mounted in a well casing of a well so as to open "windows" in the casing to allow the impedances of the formations outside the casing to be logged and recorded and also to detect faults in the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.