Borehole data transmission apparatus

Details Borehole data transmission apparatus Borehole data transmission apparatus

1992-03-31

1993-03-23

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through well fluids

367 83, G01V 140

Patent

active

051970406

ABSTRACT:
A borehole data transmission apparatus whereby a centrifugal pump impeller(s) is used to provide a turbine stage having substantial pressure characteristics in response to changing rotational speed of a shaft for the pressure pulsing of data from the borehole through the drilling mud to the surface of the earth.

REFERENCES:
patent: 4734892 (1988-03-01), Kotlyer
patent: 4956823 (1990-09-01), Russell et al.

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