Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Patent
1981-11-03
1985-03-19
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
367 16, 367 20, 367 23, 367 49, G01V 138
Patent
active
045063524
ABSTRACT:
A method and apparatus for use in marine seismic data gathering comprises a vessel (1) is equipped for deploying and retrieving trailer cables and tows a plurality of cables (3) which are provided with at least one array of transmitters (5), which array constitutes a point source for a transmitter, and an acoustic cable, over the region to be investigated. The transmitter cables (3) are caused to become distributed laterally in relation to the tow direction, the distance between them, the firing power and firing timing being controlled from the vessel in accordance with data collected previously regarding the nature of the sea bed. The point source-formed transmitter arrays can be distributed both laterally and longitudinally in relation to the tow direction. The transmitter cables (3) are distributed laterally with the aid of otterboards (8).
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Brandsaeter Helge
Eimstad Olav
Geophysical Company of Norway A/S
Kaiser K. R.
Moskowitz Nelson
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