Method and apparatus for testing marine seismic cables

Details Method and apparatus for testing marine seismic cables Method and apparatus for testing marine seismic cables

1977-03-01

1979-07-03

Birmiel, Howard A.

Communications: electrical

Selective

Having indication or alarm

340 155CP, 73 1DV, 181110, G01V 138

Patent

active

041602285

ABSTRACT:
A marine seismic streamer to be tested is towed through the water in a fully deployed state past a lightweight, portable acoustic energy source submerged beneath a stationary float. The electrical output of multiple pressure transducers distributed along the streamer is recorded on the towing vessel in response to acoustic pulses generated every few seconds by the source, a separate channel being indicative of the combined transducer output of each streamer section. Output signals failing to exhibit normal wave shape or decay characteristics as the distance varies between individual streamer sections and the stationary source may be indicative of faulty transducers or electrical or mechanical cable failures.

REFERENCES:
patent: 3290644 (1966-12-01), Hoskins
patent: 3713084 (1973-01-01), Mayne et al.
patent: 3786408 (1974-01-01), Jenkinson et al.
patent: 3858169 (1974-12-01), Bardeen
patent: 3859620 (1975-01-01), Percy
patent: 3864664 (1975-02-01), Trott

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