Angle deviation tool

Details Angle deviation tool Angle deviation tool

1985-10-04

1987-04-07

Leppink, James A.

Boring or penetrating the earth

Automatic control

In response to drilling fluid circulation

175 48, 175 61, E21B 708

Patent

active

046552995

ABSTRACT:
A normally straight drill string component for use just above a downhole drilling motor, or directional jet, that can be caused to be alternately straight or bent by cycling the drilling fluid flow rate between selected flow rate limits by use of controls at the earth surface.

REFERENCES:
patent: 2345766 (1944-04-01), Miller
patent: 2375313 (1945-05-01), Miller

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