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US 7,733,741 B2Granted
Method for reducing 3-D migration operator to 2-D migration operator for inhomogeneous media
AssigneePGS Geophysical AS
InventorNaide Pan
Life of this patent
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Abstract
Time slices of seismic data are transformed from rectangular space-time domain to cylindrical space-time domain. 2-D seismic migration is performed on the transformed data for each radial direction. Slices of the migrated data are inverse transformed back to the rectangular space-time domain, generated migrated 3-D data for generally inhomogeneous media.
Claims16
A method for performing 3-D pre-stack depth migration for generally inhomogeneous media, comprising:
- using a programmable computer to perform the following:
- transforming time slices of seismic data from rectangular space-time domain to cylindrical space-time domain;
- performing 2-D pre-stack depth migration for generally inhomogeneous media on the transformed data for each radial direction;
- and
- inverse transforming depth slices of the depth migrated data back to the rectangular space-time domain.
2 more elements
A computer readable medium with a computer program stored thereon, the program having logic operable to cause a programmable computer to perform steps comprising:
- transforming time slices of seismic data from rectangular space-time domain to cylindrical space-time domain;
- performing 2-D pre-stack depth migration for generally inhomogeneous media on the transformed data for each radial direction;
- and
- inverse transforming depth slices of the depth migrated data back to the rectangular space-time domain.
1 more element
Dependencies are inferred from the claim text.