Extended drill bit nozzle having side discharge ports

Details Extended drill bit nozzle having side discharge ports Extended drill bit nozzle having side discharge ports

1987-08-07

1988-11-15

Massie, Jerome W.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175393, E21B 908

Patent

active

047842318

ABSTRACT:
A replaceable fluid nozzle is provided for well hole drill bits. The nozzle includes a main discharge port directed downward between adjacent cutting cones of the drill bit, and two side discharge ports directed toward the leading and trailing cutter cone backfaces, respectively. The side discharge ports direct jets of drilling fluid to wash away formation fines and shale packings from around the cutter cone bearing seals. The side jets of fluid remove abrasive particles to prolong the life of the cutter cone bearings and seals.

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patent: 2885186 (1959-05-01), Hammer
patent: 3070182 (1962-12-01), Runte
patent: 3111179 (1963-11-01), Albers et al.
patent: 3744581 (1973-07-01), Moore
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patent: 4077482 (1978-03-01), Ioannesian et al.
patent: 4082015 (1978-04-01), Craig
patent: 4106577 (1978-08-01), Summers
patent: 4187921 (1980-02-01), Garner
patent: 4687066 (1987-08-01), Evans
patent: 4687067 (1987-08-01), Smith et al.

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