Induction logging sonde with metallic support
US4651101A · kind A · utility
84Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Apr 3, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/017
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Induction logging sonde including transmitter and receiver solenoid coils mounted on a support and axially separated from each other. The support is made of conductive material and comprises at least one first longitudinal portion for mounting the coils and second longitudinal portions on each side of the first portion. At least the first portion has a substantially continuous and axisymmetric outer surface so as to favor the flow of eddy currents around the surface, whereby the electric field on that surface is substantially cancelled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.