Apparatus for electromagnetically coupling power and data signal

Communications: electrical – Wellbore telemetering or control – In horizontal or inclined passage arrangement

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340857, 175 40, 336DIG2, G01V 100

Patent

active

048069280

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.

REFERENCES:
patent: 2370818 (1945-03-01), Silverman
patent: 3209323 (1965-09-01), Grossman
patent: 3550682 (1970-12-01), Fowler
patent: 3949032 (1976-04-01), Hossenlopp
patent: 3967201 (1976-06-01), Rorden
patent: 4161782 (1979-07-01), McCracken
patent: 4541481 (1985-09-01), Lancaster
patent: 4544035 (1985-10-01), Voss
patent: 4630243 (1986-12-01), MacLeod
patent: 4648471 (1987-03-01), Bordon

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