Multiplex submersible pump telemetry system

Details Multiplex submersible pump telemetry system Multiplex submersible pump telemetry system

1983-10-14

1986-12-23

Cangialosi, Salvatore

Communications: electrical

Wellbore telemetering or control

Pulse or digital signal transmission

340858, 367 81, 367 78, G01V 140

Patent

active

046315365

ABSTRACT:
A submersible well pump has a system for monitoring parameters such as pressure and temperature in the vicinity of the motor. The system includes a downhole assembly in the well that has a transmitter for generating a carrier signal and superimposing that signal onto the power cable. Transducers in the downhole assembly sense physical parameters and provide a change in resistance corresponding to the physical parameters. These transducers are connected to a modulator which modulates the carrier signal according to the resistance. A shift register in the downhole assembly sequentially shifts a reference resistor and two or more transducers into the modulating circuit to provide envelopes on the carrier signal corresponding to a synchronizing signal and to data being sensed. The modulated carrier signal is demodulated at the surface into separate channels, where each can provide a readout proportional to the physical parameter sensed.

REFERENCES:
patent: 3284669 (1966-11-01), Boyd
patent: 3340500 (1967-09-01), Boyd et al.
patent: 3518623 (1970-06-01), Langford
patent: 3587076 (1971-06-01), Grover
patent: 3727179 (1973-04-01), Bennett
patent: 3810387 (1974-05-01), Stancliff
patent: 4157535 (1979-06-01), Balkanli
patent: 4178579 (1979-12-01), McGibbeny et al.
patent: 4302835 (1981-11-01), McMahon

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