Electricity: measuring and testing – Conductor identification or location – Inaccessible
Patent
1979-04-27
1980-12-16
Karlsen, Ernest F.
Electricity: measuring and testing
Conductor identification or location
Inaccessible
73 73, 324 61QS, G01R 2726
Patent
active
042400287
ABSTRACT:
Apparatus, for determining water saturation of a fluid in a core sample or flowing in a pipe, includes a sensor spacially arranged with the pipe or the core sample providing a signal whose frequency and amplitude corresponds to the water saturation. A circuit connected to the sensing means provides a difference signal corresponding to the voltage difference between the signal from the sensor and a reference level established for the signal from the sensor corresponding to substantially 100% water saturation. A local oscillator provides a local signal whose frequency corresponds to a substantially 100% water saturation condition. A mixer connected to the sensor and to the local oscillator provides a signal having a frequency that corresponds to the difference between the frequencies of the signals from the sensor and the local oscillator. A frequency to voltage converter connected to the mixer provides a signal whose amplitude corresponds to the frequency of the mixer's signal. A network provides a signal corresponding to the water saturation in accordance with the signals from the circuit and the converter.
REFERENCES:
patent: 2772393 (1965-11-01), Davis
patent: 3979581 (1976-09-01), Reuland
patent: 4044607 (1977-08-01), Deal
Gillespie Ronald G.
Karlsen Ernest F.
Kulason Robert A.
Ries Carl G.
Texaco Inc.
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