Process for optimizing the frequency spectrum of pulses emitted

Details Process for optimizing the frequency spectrum of pulses emitted Process for optimizing the frequency spectrum of pulses emitted

1985-06-17

1987-12-08

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

367146, G01V 138

Patent

active

047121980

ABSTRACT:
A process is provided for optimizing the frequency spectrum of pulses emitted by implosion sources by attenuating the tripping or precursor peak preceding the main peak due to the implosion.
A plurality of immersed sources are used at different depths and, by successive tripping of the sources in time defined sequence, all their implosion peaks are phased while attenuating to a very large extent the resultant of the different tripping peaks, which increases the acoustic power emitted and makes the frequency spectrum more homogeneous.

REFERENCES:
patent: 2908342 (1959-10-01), Itria et al.
Manin, M., "An Attempt to Control the Frequency Spectrum Transmitted During the Implosion Generated by a Steam Gun . . . ", Europe Communities Comm., New Tech. for Explor. and Exploit. of Oil and Gas Resources Symp. (Luxembourg, 4/18/79), Proc V1, pp. 3-11 (ISBN 0-86010-158-4).

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