Methods and systems for attenuating residual acoustic energy in seismic data
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United States of America Patent
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Jul 19, 2022
Grant Date -
Jul 2, 2015
app pub date -
Apr 22, 2014
filing date -
Dec 30, 2013
priority date (Note) -
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Abstract
Systems and methods for attenuating residual acoustic energy in marine seismic data are disclosed. In one aspect, a number of gathers are recorded for consecutive activations of a marine source. Each recorded gather contains a record of acoustic reflections from a subterranean formation after activation of the source and residual acoustic energy from one or more previous activations of the source. The gathers are aligned to generate aligned gathers with the residual acoustic energy coherent between the aligned gathers and the reflections incoherent between the aligned gathers. A set of model gathers of the residual acoustic energy is generated from the aligned gathers. The model gathers are subtracted from one or more of the corresponding recorded gathers to generate one or more gathers with attenuated residual acoustic energy.
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