Fluidic mud pulser

Details Fluidic mud pulser Fluidic mud pulser

1979-09-12

1982-04-06

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through well fluids

181106, 181119, 367912, 137808, 137813, G01V 140

Patent

active

043239919

ABSTRACT:
A liquid telemetry system is disclosed useful for transmitting data through a fluid body by means of pulses in the fluid. To generate the pulses in the fluid the system utilizes a bi-stable fluid amplifier in conjunction with a vortex valve. Control input signals direct the flow of fluid from the bi-stable amplifier into the vortex valve in such manner as to selectively impede the flow of fluid through the vortex valve. The resulting changes in fluid flow rates generate pulses within the fluid body.

REFERENCES:
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patent: 4108721 (1978-08-01), Drzewiecki et al.
patent: 4134100 (1979-01-01), Funke
Wormley, "A Review of Vortex Diode . . . Characteristics", 10/03/74, pp. 4, NTIS AD787546.
Fineblum, "Vortex Diodes", 10/03/74, pp. 45-80, NTIS AD787546.
Drzewiecki, "The Design of Fluidic . . . Flip Flops", 10/03/74, pp. 433-605, NTIS AD787546.

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