Device and method for directional designature of seismic data
AssigneeCgg Services SAS
InventorGordon Poole
Life of this patent
Estimating the term…
Abstract
Computing device, computer instructions and method for directional designature of seismic data d with a given source directivity. The method includes obtaining directional operators r; calculating a model u with a modified source directivity based on (1) seismic data d, and (2) an operator that is a combination of the directional operators r and a reverse transform operator L; using the model u to obtain seismic data dfree with modified source directivity; and generating a final image of the subsurface using seismic data dfree.
Claims20
A method for source directivity compensation of seismic data d with a given source directivity related to a subsurface, the method comprising:
- obtaining directional operators r, wherein a directional operator converts a desired zero-phase wavelet to a source signature, for a given shot;
- calculating with a computing device a model u with a modified source directivity based on (1) the seismic data d, and (2) an operator that is a combination of the directional operators r and a reverse transform operator L;
- using the model u to obtain seismic data dfree with modified source directivity;
- and
- generating an image of a geophysical structure in the subsurface using seismic data dfree.
A computing device for source directivity compensation of seismic data d with a given source directivity, related to a subsurface, the computing device comprising:
- a processor configured to,
- obtain directional operators r, wherein a directional operator converts a desired zero-phase wavelet to a source signature, for a given shot;
- calculate a model u with a modified source directivity based on (1) seismic data d, and (2) an operator that is a combination of the directional operators r and a reverse transform operator L;
- use the model u to obtain seismic data dfree with modified source directivity;
- and
- generate an image of a geophysical structure in the subsurface using seismic data dfree.
A non-transitory computer readable medium storing computer executable instructions, wherein the instructions, when executed by a computer, implement a method for source directivity compensation of seismic data d with a given source directivity, related to a subsurface, the method comprising:
- obtaining directional operators r, wherein a directional operator converts a desired zero-phase wavelet to a source signature, for a given shot;
- calculating a model u with a modified source directivity based on (1) seismic data d, and (2) an operator that is a combination of the directional operators r and a reverse transform operator L;
- using the model u to obtain seismic data dfree with modified source directivity;
- and
- generating an image of a geophysical structure in the subsurface using seismic data dfree.
Dependencies are inferred from the claim text.