Drive assembly for acoustic sources

Acoustics – Geophysical or subsurface exploration – Seismic wave generation

Reexamination Certificate

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Reexamination Certificate

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06851511

ABSTRACT:
In one embodiment of the present invention, a drive assembly for a seismic land vibrator is provided. The drive assembly comprises at least a first spring element. The first spring element operates in at least two vibration modes in a seismic frequency band of interest. The drive assembly also comprises a baseplate, a driver, and a reaction mass. The driver interacts with the reaction mass and the first spring element to transfer energy to the baseplate.

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patent: 2028647 (1995-02-01), None
F.S. Kramer, R.A. Peterson, W.C. Walter, “Seismic Energy Sources”, 1968 Handbook 38thAnnual Meeting of the SEG.
W. E. Liang, Appendix B: “History and early development of the vibroseis system of seismic exploration”, VIBROSEIS, 749-765, Geophysics Reprint Series No. 11 (1989).
W. E. Lerwill, “The Amplitude and Phase Response of a Seismic Vibrator”, Geophysical Prospecting, vol. 29, 503-529 (1981).
Guido Baeten, Jacob Fokkema & Anton Ziolkowski, “The marine vibratorsource”, First Break, vol. 6, No. 9 ((Sep. 1988).

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