Borehole drilling motor with flexible shaft coupling

Details Borehole drilling motor with flexible shaft coupling Borehole drilling motor with flexible shaft coupling

1990-11-19

1992-08-04

Britts, Ramon S.

Boring or penetrating the earth

With below-ground tool drive prime mover

With positive connection between tool and support shaft for...

175107, E21B 400

Patent

active

051350599

ABSTRACT:
A downhole drilling motor includes a rotor and stator of the Moineau positive displacement type within a housing. A drive shaft is rotatably mounted within the housing. A flexible shaft with a polygonal connection at each end transmits the rotational motion of the rotor to the drive shaft while compensating for the eccentric movement of said rotor within said stator relative to said drive shaft.

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