Title: Method and apparatus for diagnosing faults in the geophone group of a geophysical data acquisition system

Abstract: This invention relates to a method and apparatus for quick and convenient fault diagnosis of a geophone group-geophone cable complex of a geophysical data acquisition system used in the collection and recording of seismic information, such faults within each geophone group of such a system being identified, irrespective of the fact that a cable or cable segment is interconnected between the group under test and the fault-testing apparatus of the present invention.

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Inventors: Fredriksson, Oke A. (Fullerton, CA, US)

Application Number: 587463
Filing Date: 1975-06-16
Publication_date: 1977-10-04
Assignee: Chevron Research Company (San Francisco, CA)
Primary Class(es): 367/177 324/537, 381/58
Other Classes:
US Patent Ref:

3541436	Nov, 1970	Haggan	324/62.
3612993	Oct, 1971	Tims et al.	324/62.
3651399	Mar, 1972	Florance et al.	324/62.
3717810	Feb, 1973	Spanbauer	324/57.

Other Refs: 1,299,355

Jul, 1969	DT

Primary Examiner: Moskowitz, Nelson
Assistant Examiner:
Attorney: Freeland, Jr.; R. L., Messner; H. D.