Apparatus for electromagnetically coupling power and data signals between well bore apparatus and the surface
US4806928A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1987 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Jul 16, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S336/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
In the representative embodiment of the new and improved apparatus disclosed herein, a downhole tool adapted to be coupled in a pipe string and positioned in a well bore is provided with one or more electrical devices cooperatively arranged to receive power from surface power sources or to transmit and/or receive control or data signals from surface equipment. Unique inner and outer coil assemblies arranged on ferrite cores are arranged on the downhole tool and a suspension cable for electromagnetically coupling the electrical devices to the surface equipment so that power and/or data or control signals can be transmitted between the downhole and surface equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.