Nozzle means for rotary drill bits

Details Nozzle means for rotary drill bits Nozzle means for rotary drill bits

1990-03-30

1991-07-09

Dang, Hoang C.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175424, 21B 1018, 175, 175, 175

Patent

active

050296566

ABSTRACT:
A rotary drill bit (10) has fluid discharge nozzles (36A, 36B, 36C) positioned between adjacent pairs of roller cutters (20A, 20B, 20C). A fluid discharge nozzle (36A) provides a stream of drilling fluid (44) toward an adjacent roller cutter (20A) inclined radially outwardly toward the side wall (34) of the bore hole (30) and slanted toward the roller cutter (20A) for first striking the side wall (34), and then sweeping inwardly across the bore hole bottom (32) in a flat high velocity stream tangential to bit rotation and beneath the cutting elements (26) during cutting engagement of the gage row (28D) with the formation.

REFERENCES:
patent: 1143274 (1915-06-01), Hughes
patent: 2108955 (1938-02-01), Zublin
patent: 2873092 (1959-02-01), Dwyer
patent: 2885186 (1959-05-01), Hasmmer
patent: 3137354 (1964-06-01), Crawford et al.
patent: 3144087 (1964-08-01), Williams Jr.
patent: 3618682 (1971-11-01), Bennett
patent: 4222447 (1980-09-01), Cholet
patent: 4351402 (1982-09-01), Gonzalez
patent: 4619335 (1986-10-01), McCullough
patent: 4657093 (1987-04-01), Schumacher
patent: 4673045 (1987-06-01), McCullough
patent: 4741406 (1988-05-01), Deane et al.
patent: 4848476 (1989-07-01), Deane et al.

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