Method for analyzing seismic data
AssigneeTotal SA
InventorsEvgeny Landa, Reda Baina
Life of this patent
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Abstract
A method for analyzing seismic data by generating a post-migration common image gather in a dip angle domain from measured seismic data; detecting concave features related to reflection events in the common image gather and apexes; filtering out part of the concave features in the common image gather in a vicinity of the detected apexes; applying a hybrid Radon transform to the filtered common image gather to separate residues of the concave features from other image features related to diffraction events; and applying an inverse hybrid Radon transform to an image containing the separated features related to diffraction events to obtain a transformed common image gather in the dip angle domain.
Claims10
A method for analyzing seismic data, comprising:
- generating a post-migration common image gather in a dip angle domain from measured seismic data;
- detecting concave features related to reflection events in the common image gather and apexes of said concave features;
- filtering out part of the concave features in the common image gather in a vicinity of the detected apexes;
- applying a hybrid Radon transform to the filtered common image gather to separate residues of the concave features from other image features related to diffraction events;
- applying an inverse hybrid Radon transform to an image containing the separated features related to diffraction events to obtain a transformed common image gather in the dip angle domain.
A computer including at least one processor and a computer-readable storage medium for tangibly storing thereon an executable program for analyzing seismic data, the program comprising instructions for performing the steps of a method for analyzing seismic data when the program is executed by the computer wherein said steps comprise:
- generating a post-migration common image gather in a dip angle domain from measured seismic data;
- detecting concave features related to reflection events in the common image gather and apexes of said concave features;
- filtering out part of the concave features in the common image gather in a vicinity of the detected apexes;
- applying a hybrid Radon transform to the filtered common image gather to separate residues of the concave features from other image features related to diffraction events;
- applying an inverse hybrid Radon transform to an image containing the separated features related to diffraction events to obtain a transformed common image gather in the dip angle domain.
Dependencies are inferred from the claim text.