Drill bit having replaceable nozzles directing drilling fluid at

Details Drill bit having replaceable nozzles directing drilling fluid at Drill bit having replaceable nozzles directing drilling fluid at

1983-10-31

1986-04-15

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175422R, 239600, E21B 1018

Patent

active

045821496

ABSTRACT:
A nozzle system for a rotary drill bit comprising a plurality of elongate nozzle members detachably secured in drilling fluid exit bores in a drill bit body, each nozzle member having passaging therein, the lower portion of which is angled relative to the longitudinal axis of the nozzle member, and a projection and recess arrangement for holding each nozzle member in its bore in a predetermined angular position for directing the drilling fluid to flow in a stream along a line at a predetermined angle and in a predetermined position relative to an adjacent roller cutter of the drill bit for improved cleaning of the cutting elements and the formation.

REFERENCES:
patent: 1143273 (1915-06-01), Hughes
patent: 1784476 (1930-12-01), Zublin et al.
patent: 1922436 (1933-08-01), Herrington
patent: 2098758 (1937-11-01), Reed
patent: 2815936 (1957-12-01), Peter et al.
patent: 3129777 (1964-04-01), Haspert
patent: 3220754 (1965-11-01), Mori
patent: 3273805 (1966-09-01), Hall
patent: 3823789 (1974-07-01), Garner
patent: 4219161 (1980-08-01), Freissle
patent: 4222447 (1980-09-01), Cholet
patent: 4301877 (1981-11-01), Cloud
patent: 4516642 (1985-05-01), Childers et al.

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