Apparatus and method for generating a seismic source signal
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United States of America Patent
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Dec 8, 2009
Grant Date -
Oct 18, 2007
app pub date -
Mar 27, 2007
filing date -
Mar 27, 2006
priority date (Note) -
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Abstract
A seismic source signal generator includes a mass, a primary accumulator and a secondary accumulator, the secondary accumulator having an internal volume smaller than an internal volume of the primary accumulator. A method for generating a signal using a seismic vibrator includes operating the seismic vibrator using hydraulic fluid, damping hydraulic pressure deviations in the hydraulic fluid using a first accumulator in hydraulic communication with the hydraulic fluid, and damping pressure deviations in the hydraulic fluid using a second accumulator in hydraulic communication with the hydraulic fluid, the second accumulator having an internal volume smaller than an internal volume of the first accumulator.
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