Connecting apparatus for logging tools including electrical feedthrough and isolation system with bridle assembly
US5159978A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1991 |
| Grant date | Nov 3, 1992 |
| Priority date | — |
| Expiry date | Aug 13, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rigid bridle for supporting a current emitting logging tool in a sonde is set forth. The rigid bridle is formed of multiple segments of tubular members, normally formed of metal. At selected locations along the length thereof, they are interrupted by electrical insulators which prevent current flow along the length thereof. Moreover, the external surface is coated with first one and then the second layer of insulative material; three such units in serial assembly support a return current electrode for use in a current emitting logging tool. In an alternate form, a short electrical isolator joint is set forth which includes concentric metal members which are spaced from one another when assembled by insulative members positioned therebetween so that current flow along the length thereof is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.