Deep-borehole drilling device with magnetic coupling

Details Deep-borehole drilling device with magnetic coupling Deep-borehole drilling device with magnetic coupling

1987-02-04

1988-03-22

Leppink, James A.

Boring or penetrating the earth

With below-ground tool drive prime mover

175104, 175107, 166 665, 464 29, E21B 402, E21B 404

Patent

active

047322250

ABSTRACT:
A deep-borehole drilling device comprising a drive unit such as a downhole motor and a driven unit such as a generator in which a drive transmission coupling is provided in the form of a contact-free magnetic coupling. The magnetic coupling may be a permanent magnet coupling with the magnets arranged coaxially and is preferably a can-tube coupling comprising an outer magnet carrier and a can-tube disposed coaxially within said outer magnet carrier.

REFERENCES:
patent: 2531120 (1950-11-01), Feaster
patent: 3389758 (1968-06-01), Buhler
patent: 4115040 (1978-09-01), Knorr
patent: 4120618 (1978-10-01), Klaus
patent: 4679636 (1987-07-01), Ruhle

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