Flow pulsing apparatus with axially movable valve

Details Flow pulsing apparatus with axially movable valve Flow pulsing apparatus with axially movable valve

1987-05-06

1989-05-16

Massie, IV, Jerome W.

Boring or penetrating the earth

With below-ground tool drive prime mover

With mechanical motion-converting means

175232, 175317, E21B 402

Patent

active

048301221

ABSTRACT:
Flow pulsing apparatus is adapted to be connected in a drill string above a drill bit. The apparatus includes a housing providing a passage for a flow of drilling fluid toward the bit. A turbine in the housing is rotated about an axis by the flow of drilling fluid. A valve is operated by the turbine to periodically restrict the flow through the passage to create pulsations in the flow and a cyclical water hammer effect to vibrate the housing and the drill bit during use. A cam is provided for effecting reciprocation of the valve along the axis of rotation of the turbine to effect the periodic restriction of flow.

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

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