Fluidic mud pulse data transmission apparatus

Details Fluidic mud pulse data transmission apparatus Fluidic mud pulse data transmission apparatus

1977-11-30

1979-01-09

Moskowitz, Nelson

Communications: electrical

Selective

Interrogation response

340 18NC, 181119, 175 40, 137836, G01V 140

Patent

active

041341007

ABSTRACT:
A mud pulse transmitter is presented for transmitting information by prese pulses to the surface during the drilling of a borehole. A vortex valve is controlled by a fluidic feedback oscillator to generate the mud pulses. The oscillator frequency may be varied or the oscillator turned on and off by valves in the feedback paths of the oscillator, thereby permitting the transmission of information.

REFERENCES:
patent: 3237712 (1966-03-01), Horton
patent: 3239027 (1966-03-01), Schuck
patent: 3331382 (1967-07-01), Horton
patent: 3390692 (1968-07-01), Hastie et al.
patent: 3416487 (1968-12-01), Greene
patent: 3515158 (1970-06-01), Utz
patent: 3860902 (1975-01-01), Galle
patent: 3906435 (1975-09-01), Lamel et al.
patent: 3909776 (1975-09-01), Broding et al.
patent: 3932836 (1976-01-01), Harrell et al.
patent: 3942559 (1976-03-01), Kranz et al.

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