Measuring and testing – Borehole or drilling – Downhole test
Patent
1977-06-27
1978-08-22
Ciarlante, Anthony V.
Measuring and testing
Borehole or drilling
Downhole test
60641, E21B 4706
Patent
active
041079876
ABSTRACT:
The operating characteristics of deep well pumping equipment in a geothermal well power-generation system are observed by cooperating sensor and communication elements permanently associated with the geothermal well equipment itself. Bridge circuit sensors detect well water temperature and water pressure below and above the pump, while a further sensor detects pump rotational speed. The data is transmitted by a multiplexing acoustic communication link coupled to receiver and display means located at the earth's surface. An electrical generator driven at the pump speed serves as the rotational speed pick off and additionally supplies multiplexing and signal processor power for use at the down-well site. The signal processor includes novel diode circuits in each bridge sensor channel for monitoring the operation of the individual sensors and their common power source, thereby providing a surface display of the parameter being measured by a particular sensor channel and additionally providing a calibrating display of the operating status of that channel.
REFERENCES:
patent: 2508446 (1950-05-01), Conant
patent: 3209248 (1965-09-01), Siefert
patent: 3988896 (1976-11-01), Matthews
Robbins Kenneth W.
Ross Gerald F.
Ciarlante Anthony V.
Sperry Rand Corporation
Terry Howard P.
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