Noise removal in non-uniformly spaced seismic receiver arrays
AssigneeION Geophysical Corporation
InventorChristof Stork
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Abstract
Embodiments of non-uniformly spaced seismic receiver arrays and associated noise removal techniques are disclosed. In one embodiment of a method of seismic data acquisition, a plurality of seismic receivers may be positioned in an array having a plurality of regions, each region in the array having a respective average spacing between seismic receivers, with the average spacing in a second region of the plurality of regions being greater than the average spacing in a first region of the plurality of regions that is adjacent to the second region. Seismic data may be acquired utilizing the plurality of seismic receivers, and noise may be removed therefrom.
Claims31
A method of seismic data acquisition, comprising:
- positioning a plurality of seismic receivers in an array having a plurality of regions, each region in the array having a respective average spacing between seismic receivers, with the average spacing in a second region of the plurality of regions being greater than the average spacing in a first region of the plurality of regions that is adjacent to the second region;
- acquiring seismic data utilizing the plurality of seismic receivers;
- transforming the acquired seismic data into a surface phase velocity domain using a beam forming operation;
- identifying noise in the acquired seismic data based at least in part on surface phase velocities observed in the acquired seismic data once transformed into the surface phase velocity domain;
- and
- removing the noise identified in the acquired seismic data once transformed into the surface phase velocity domain.
A seismic data acquisition system, comprising:
- a plurality of seismic receivers arranged in an array having a plurality of regions, each region in the array having a respective average spacing between seismic receivers, with the average spacing in a second region of the plurality of regions being greater than the average spacing in a first region of the plurality of regions that is adjacent to the second region;
- a data storage coupled to the plurality of seismic receivers and configured to store seismic data acquired by the plurality of seismic receivers;
- a data processor coupled to the plurality of seismic receivers and configured to:
- transform the acquired seismic data into a surface phase velocity domain;
- and using a beam forming operation;
- and
- removing the noise identified in the acquired seismic data once transformed into the surface phase velocity domain
- identify noise in the acquired seismic data based at least in part on surface phase velocities observed in the acquired seismic data once transformed into the surface phase velocity domain.
Dependencies are inferred from the claim text.