Well logging apparatus for determining dip, azimuth, and invaded zone conductivity
US4766384A · kind A · utility
102Cited by
10References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1986 |
| Grant date | Aug 23, 1988 |
| Priority date | — |
| Expiry date | Jun 20, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A well logging apparatus is disclosed which employs slot antennas having a plurality of conductive probes traversing the slot. Also disclosed are a logging apparatus having electrically isolated antenna probes and a logging apparatus with an improved circuit for generating and applying a reference signal used in phase detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.