Centrifugal water-air separation in earth drilling bits

Details Centrifugal water-air separation in earth drilling bits Centrifugal water-air separation in earth drilling bits

1978-07-03

1981-01-20

Pate, III, William F.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

55457, 175340, 175324, E21B 1018

Patent

active

042457106

ABSTRACT:
A rock bit used for drilling with air as the circulating fluid, and a centrifugal separator to filter liquid and other contaminants from the air diverted to the bit bearings. The filter generates a fluid vortex with radial vanes, each having plural pitches, located within the shank of the bit. Bearing coolant passages, located beneath the separator, receive filtered air from a central, filtered air location. The vortex centrifugally forces the water and other contaminants outwardly into nozzle passages that direct fluid toward the bottom of the borehole.

REFERENCES:
patent: 1809375 (1931-06-01), Chase
patent: 2329745 (1943-09-01), Crook
patent: 2961064 (1960-11-01), Fisher
patent: 3885935 (1975-05-01), Nutter
patent: 4089665 (1972-05-01), Brookman

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