Actuating device associated with a drill string and comprising a

Details Actuating device associated with a drill string and comprising a Actuating device associated with a drill string and comprising a

1992-07-16

1994-05-10

Bagnell, David J.

Boring or penetrating the earth

Automatic control

In response to drilling fluid circulation

175269, 1753251, F21B 706, F21B 1710

Patent

active

053100123

ABSTRACT:
The present invention is a device for the remote actuation of equipment (3) associated with a drill string (1) through a hydraulic displacement mechanism (10;53,58) co-operating with a distributor (7;25,26,27;47) associated with the drilling fluid. The displacement mechanism directly converts the hydraulic energy of the drilling fluid into actuating mechanical energy with the co-operation of no other fluid than the drilling fluid. The invention further relates to an actuating method using the device and has an application of directional drilling in the petroleum field.

REFERENCES:
patent: 1607662 (1926-11-01), Boynton
patent: 2935615 (1960-05-01), True
patent: 3780809 (1973-12-01), Ayers, Jr.
patent: 3788136 (1974-01-01), Park
patent: 4821817 (1989-04-01), Cendre et al.
patent: 4951760 (1990-08-01), Cendre et al.

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