Measuring pad arrangement for a logging sonde
US4862090A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1988 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Mar 4, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to increase the angular field of observation of a logging sonde usable, in particular for dip metering, the sonde is equipped with measuring pads each comprising two independent flaps. The flaps of the same pad are hinged to a central element which is held permanently parallel to the axis of the sonde body, and they are applied against the wall of a borehole by blade springs. Each of the flaps carries an array of electrodes. The flaps of each of the measuring pads are circumferentially offset relative to each other so that the angular field of observation is increased without increasing the diameter of the sonde, once the pads have been retracted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.