Methods for attenuating noise in seismic data
AssigneeAmoco Corporation
InventorPaul D. Favret
Life of this patent
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Abstract
The present invention relates generally to methods of enhancing seismic data and, more particularly, to methods of attenuating noise in seismic signals. The seismic data are sorted into gathers of seismic signals, and selected coherent events in each gather of seismic signals are aligned. The gathers of seismic signals are then processed so as to transform the balance of the coherent events in each gather of seismic signals into incoherent events. A two-dimensional filter is then applied to the transformed signals to attenuate incoherent events.
Claims22
A method for enhancing seismic data, comprising the steps of:
- (a) obtaining a set of seismic data having gathers of seismic signals;
- (b) aligning selected coherent events in each gather of seismic signals;
- (c) transforming the remaining coherent events in each gather of seismic signals into incoherent events;
- and
- (d) attenuating the incoherent events from each gather of seismic signals.
A method for enhancing seismic data, comprising the steps of:
- (a) sorting the seismic data into sequentially-ordered gathers of seismic signals;
- (b) aligning selected coherent events in the sequentially-ordered gathers of seismic signals;
- (c) sorting the sequentially-ordered gathers of seismic signals into disordered gathers of seismic signals;
- and
- (d) two-dimensional filtering the disordered gathers of seismic signals to attenuate the balance of the coherent events to obtain first filtered signals.
Dependencies are inferred from the claim text.