Downhole motor rotor supports

Details Downhole motor rotor supports Downhole motor rotor supports

1976-08-16

1978-03-21

Husar, C. J.

Rotary kinetic fluid motors or pumps

With shaft connected fluid force subjected thrust balancing...

Motor shaft

415 1, 415113, 415502, F01D 300

Patent

active

040800946

ABSTRACT:
Method and apparatus to lift the rotor of an earth borehole downhole drilling motor with a resilient force that exceeds the rotor weight so that starting of the motor is more certain due to reduced drag on primary thrust bearings. Additionally the apparatus may be used to reduce imbalanced axial loads on rotor primary thrust bearings.

REFERENCES:
patent: 1277381 (1918-09-01), Chapman
patent: 1285644 (1918-11-01), Doble et al.
patent: 1320736 (1919-11-01), Chapman
patent: 1701468 (1929-02-01), Arutunoff
patent: 1872538 (1932-08-01), Weis
patent: 2301340 (1942-11-01), Spengler
patent: 2592519 (1952-04-01), Postlewaite
patent: 2991837 (1961-07-01), Postlewaite
patent: 3054595 (1962-09-01), Kaufmann
patent: 3058510 (1962-10-01), Tiraspolsky et al.
patent: 3989409 (1976-11-01), Ioannesian

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