Method of seismic surveying, a marine vibrator arrangement,...

Details Method of seismic surveying, a marine vibrator arrangement,... Method of seismic surveying, a marine vibrator arrangement,...

2007-08-14

2007-08-14

Lobo, Ian J. (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Offshore prospecting

C367S015000, C181S113000, C181S120000

Reexamination Certificate

active

10070228

ABSTRACT:
A method of seismic surveying comprises emitting seismic energy at two or more different depths during a sweep. In one embodiment, the depth of a seismic source is varied during a sweep, by raising or lower the source while it is emitting seismic energy. In another embodiment, an array of two or more marine vibrators is used as the source of seismic energy, with the vibrators in the array being disposed at different depths. The invention allows notch frequencies in the amplitude spectrum to be eliminated, and allows improvements in both the spectral flatness and the amplitude at low frequencies.

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International Search Report for PCT/GB00/03218 dated Nov. 24, 2000.

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