Marine seismic acquisition method and apparatus

Details Marine seismic acquisition method and apparatus Marine seismic acquisition method and apparatus

2008-05-27

2008-05-27

Donovan, Lincoln (Department: 2837)

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

C181S120000, C181S118000, C181S119000, C181S108000

Reexamination Certificate

active

07377357

ABSTRACT:
A marine seismic source method capable of retaining low frequencies is disclosed. One embodiment of the method comprises a seismic source that generates an up-going wave and first down-going wave with opposite polarity. The up-going wave reflects off the ocean surface as a second down-going wave having the same polarity as the first down-going wave and the first and second down-going waves combine substantially in-phase to form a third down-going wave. A source apparatus to accomplish the method is also disclosed. One source apparatus embodiment comprises a device wherein at least part of the device is below the surface of the water and the device is adapted to cause oscillations below the surface of the water, and means for oscillating the device in the water to create an up-going wave and a first down-going wave and the up-going wave has reverse polarity relative to the first down-going wave.

REFERENCES:
patent: 3384868 (1968-05-01), Brown et al.
patent: 4016952 (1977-04-01), Reed et al.
patent: 4153134 (1979-05-01), Yang
patent: 4578784 (1986-03-01), Mifsud
patent: RE32683 (1988-05-01), Ray
patent: 4937793 (1990-06-01), Shuck et al.
patent: 4991685 (1991-02-01), Airhart
patent: 5853905 (1998-12-01), So et al.
patent: 5894451 (1999-04-01), DeJaco et al.
patent: 6091668 (2000-07-01), Barber, Sr.
patent: 6230840 (2001-05-01), Ambs
patent: 6678207 (2004-01-01), Duren
Galbraith, J. M., and Millington, G. F. (1979) “Low Frequency Recovery in the Inversion of Seismograms”:Journal of the CSEG, v. 15, p. 30-39.
Lavergne, M., and Willm, C. (1977) “Inversion of Seismograms and Pseudovelocity Logs”:Geophysical. Prosp., v. 25, p. 231-250.
Lindseth, R. O. (1979) “Synthetic Sonic Logs-A Process for Stratigraphic Interpretation”:Geophysics, v. 44, p. 3-26.
Oldenburg, D. W., Scheuer, T., and Levy, S. (1983) “Recovery of the Acoustic Impedance from Reflection Seismograms”:Geophysics, v. 48, p. 1318-1337.
Trantham, E. Clark (1993) “Minimum Uncertainty Filters for Pulses”:Geophysics, v. 58, p. 853-862.

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