Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids
Patent
1985-11-08
1988-03-29
Kyle, Deborah L.
Communications, electrical: acoustic wave systems and devices
Wellbore telemetering
Through well fluids
367 84, 340861, 175 40, H04H 900, G01V 100
Patent
active
047348925
ABSTRACT:
A logging-while-drilling tool includes a housing positioned in a drill string, a shaft journaled in the housing, a turbine stage or stages, a rotor or rotors, the latter mounted on the shaft outside of the housing and driven by the drilling fluid and a braking device for variably controlling the rotational speed of the rotor in order to produce pressure pulses which are transmitted to the surface through the drilling fluid. A generator or other energy storing device is provided to power an electronic package which interprets downhole conditions for transmission of the same as pressure pulses.
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Kyle Deborah L.
Steinberger Brian S.
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