Drill bit with suction jets

Details Drill bit with suction jets Drill bit with suction jets

1978-11-21

1980-09-16

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

E21B 908

Patent

active

042224470

ABSTRACT:
A rotary drilling tool has a plurality of rollers, each of which is provided with a specific pair of jets comprising a flushing jet having a downwardly directed component and an upwardly directed eduction jet, these jets being formed on both sides of the plane defined by the bit axis and the roller axis, and the flushing jet being inclined by at least 20.degree. on said plane and substantially tangent to the active part of the roller.

REFERENCES:
patent: 2776115 (1957-01-01), Williams, Jr.
patent: 3070182 (1962-12-01), Runte
patent: 3111179 (1963-11-01), Albers et al.
patent: 3144087 (1964-08-01), Williams, Jr.
patent: 4083417 (1978-04-01), Arnold

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