Flow pulsing apparatus for use in drill string

Details Flow pulsing apparatus for use in drill string Flow pulsing apparatus for use in drill string

1987-01-30

1989-04-11

Massie, Jerome W.

Boring or penetrating the earth

With below-ground tool drive prime mover

Fluid rotary type

175232, 175317, E21B 402

Patent

active

048197459

ABSTRACT:
A simple and economical device is placed in a drill string to provide a pulsating flow of the pressurized drilling fluid to the jets of the drill bit to enhance chip removal and provide a vibrating action in the drill bit itself thereby to provide a more efficient and effective drilling operation.

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patent: 3768576 (1973-10-01), Martini
patent: 3807512 (1974-04-01), Pogonowski et al.
patent: 4434863 (1984-03-01), Garrett

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