Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Offshore prospecting
Reexamination Certificate
2011-07-05
2011-07-05
Keith, Jack (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Offshore prospecting
C367S190000, C181S110000
Reexamination Certificate
active
07974152
ABSTRACT:
A method for controlling output of a marine seismic vibrator includes operating the vibrator using a predetermined driver signal. A vibrator output signal is measured at at least two different places on the vibrator. The at least two measured vibrator output signals are used to determine a corrected driver signal, wherein the corrected driver signal results in fewer harmonics of fundamental frequencies in the vibrator output. The vibrator is operated using the corrected driver signal.
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Keith Jack
Murphy Daniel L
PGS Geophysical AS
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