Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Land-reflection type
Patent
1979-09-26
1981-11-03
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Land-reflection type
367 13, 324 51, 324 57R, 1791753F, 73 1DV, G01V 116, G01V 100, G01C 2700
Patent
active
042989698
ABSTRACT:
This application relates to seismic data gathering devices and to testing the impedances of the geophone channels of such devices. The invention includes impressing a test current on each channel to be tested, said current developing a test voltage indicative of the impedance; generating a high reference voltage which corresponds to the maximum acceptable impedance of the channel; generating a low reference voltage which corresponds to the minimum acceptable impedance of the channel; and comparing the test voltage with the reference voltages.
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Exxon Production Research Company
Glober George E.
Moskowitz Nelson
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