Valve latch device for drilling fluid telemetry systems

Details Valve latch device for drilling fluid telemetry systems Valve latch device for drilling fluid telemetry systems

1983-01-27

1985-07-30

Pate, III, William F.

Wells

With electrical means

Valve

175 48, 251 89, 251137, E21C 706

Patent

active

045315795

ABSTRACT:
A latch device for controlling a valve in a mud pulse telemetry system for imparting data pulses to drilling fluids circulating in a drill string is disclosed. A latch device and valve arrangement including an improved shear type, solenoid operated valve for modulating the pressure of the circulating drilling fluid is disclosed. A latching solenoid armature is connected to the valve gate through separate open and close solenoids having their armatures operatively connected to act as a single unit. The single unit armature is normally restrained from movement by the solenoid deactivated latch device. The latch device is arranged so that the vibrational and impact loads on the drill string serve to further maintain the modulating valve in a closed position.

REFERENCES:
patent: 2236145 (1941-03-01), Kolb
patent: 2842334 (1952-07-01), Short
patent: 2869475 (1959-01-01), Bobo
patent: 4078620 (1978-03-01), Westlake et al.

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