Noise removal from 3D seismic representation
AssigneeWesternGeco L.L.C.
InventorsMassimiliano Vassallo, Kurt Eggenberger, Dirk-Jan Van Manen, Ali Özbek
Life of this patent
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Abstract
A method for removing noise from a three-dimensional representation of seismic data. The method includes receiving seismic data acquired in a seismic survey. The method may organize the acquired seismic data into a three-dimensional representation of the acquired seismic data. The method may then remove a noise from the three-dimensional representation of the acquired seismic data based on at least one criterion.
Claims18
A method, comprising:
- receiving seismic data acquired in a seismic survey using seismic sensors;
- organizing the acquired seismic data into a three-dimensional representation of the acquired seismic data, comprising:
- constructing the three-dimensional representation of the acquired seismic data using an interpolation process, wherein the three-dimensional representation is substantially unaliased with respect to at least a crossline direction, wherein the interpolation process comprises:
- determining a measurement function representing the acquired seismic data, the measurement function comprising basis functions;
- selecting a new basis function;
- applying a ghosting operator to the new basis function to generate a transformed basis function;
- and
- adding the transformed basis function to the measurement function;
- and
- based on at least one criterion, removing noise from the three-dimensional representation of the acquired seismic data.
A non-transitory computer-readable medium having stored thereon computer-executable instructions which, when executed by a computer, cause the computer to:
- receive seismic data acquired in a seismic survey using seismic sensors;
- organize the acquired seismic data into a three-dimensional representation of the acquired seismic data, comprising:
- construct the three-dimensional representation of the acquired seismic data using an interpolation process, wherein the three-dimensional representation is substantially unaliased with respect to at least a crossline direction, wherein the interpolation process comprises:
- determining a measurement function representing the acquired seismic data, the measurement function comprising basis functions;
- selecting a new basis function;
- applying a ghosting operator to the new basis function to generate a transformed basis function;
- and
- adding the transformed basis function to the measurement function;
- and
- based on at least one criterion, remove noise from the three-dimensional representation of the acquired seismic data.
A computer system, comprising:
- a processor;
- and
- a memory comprising program instructions executable by the processor to:
- receive seismic data acquired in a seismic survey using seismic sensors;
- organize the acquired seismic data into a three-dimensional representation of the acquired seismic data, comprising:
- construct the three-dimensional representation of the acquired seismic data using an interpolation process, wherein the three-dimensional representation is substantially unaliased with respect to at least a crossline direction, wherein the interpolation process comprises:
- determining a measurement function representing the acquired seismic data, the measurement function comprising basis functions;
- selecting a new basis function;
- applying a ghosting operator to the new basis function to generate a transformed basis function;
- adding the transformed basis function to the measurement function;
- and
- based on at least one criterion, remove one or more seismic interference signals from the three-dimensional representation of the acquired seismic data.
Dependencies are inferred from the claim text.