Method and device for establishing an intermittent electric connection with a stationary tool in a well
US5355952A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1993 |
| Grant date | Oct 18, 1994 |
| Priority date | — |
| Expiry date | Feb 24, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B23/03
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An intervention tool (R1, R2) is installed permanently behind a casing pipe or a tubing, in proximity to a tubular section (5) provided with a lateral cavity (6) . A single-contact or a multicontact plug connected to the device is positioned at the bottom of the cavity. A connecting part (9) provided with a retractable finger (10) is lowered into the pipe (2) at the end of a cable (10) comprising one or several conducting lines . A guide ramp (13) allows the finger (10) to be guided towards the cavity (6) when the part (9) comes close thereto. The end of the finger bears a socket (12) adapted for engaging onto the plug (7) . Signals produced by tool (R1, R2) may thus be collected or transmitted thereto at will and only when necessary, without having to establish a permanent link. The invention tool can be used for active or passive monitoring of an oil effluent reservoir for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.