Controlled phase marine source subarray

Details Controlled phase marine source subarray Controlled phase marine source subarray

1992-06-17

1994-01-25

Pihulic, Daniel T.

Acoustics

Geophysical or subsurface exploration

Seismic source and detector

367 15, 367153, G01V 138

Patent

active

052817733

ABSTRACT:
Controlled phase marine seismic subarray for use in a marine seismic array and methods for constructing such subarray are provided. A controlled phase marine seismic subarrays of the present invention are arranged to operate at a preselected depth and to provide generally downgoing (for angles of emergence from the array that are of interest) far-field pulses having phase spectra that match the phase spectrum of the vertically downgoing far-field pulse up to a ghost-notch frequency. The methods select the depth of operation and type of sources for the subarray, select a maximum number of identical elements and spacing based upon the highest incidence angle and frequency for which phase control is desired, and construct a plurality of parallel, linear, subarrays.

REFERENCES:
patent: 4146870 (1979-03-01), Ruehle
patent: 4721180 (1988-01-01), Haughland et al.
patent: 4727956 (1988-03-01), Huizer
patent: 4956822 (1990-09-01), Barber et al.
patent: 5142498 (1992-08-01), Duren
"A Theory for Marine Source Arrays", by Richard E. Duren, Geophysics, vol. 53, No. 5, pp. 650-658 [May 1988].
"Why Don't We Measure Seismic Signatures?", by A. Ziokowski, Geophysics, vol. 56, No. 2, pp. 190-201 [Feb. 1991].

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