Converted-wave analysis system and method
AssigneePGS Tensor, Inc.
InventorsXianhuai Zhu, Suat Altan, Matthew A. Brzostowski, Weizhug Wang
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Abstract
Method and systems are provided for processing c-wave data resulting in less sensitivity to errors in p-wave velocity analysis. Therefore, according to one aspect of the invention, a process is provided for processing c-wave data, the process comprising: providing zero-offset gather without a hyperbolic movement correction; performing migration on the zero-offset gather; performing velocity analysis on the migrated zero-offset gather; and performing NMO on the migrated data using the velocity from the velocity analysis.
Claims13
A method for processing converted wave seismic data comprising:
- providing a converted-wave zero-offset gather substantially uncorrected by normal move-out;
- performing migration on the zero-offset gather;
- performing velocity analysis on the migrated zero-offset gather;
- and
- performing NMO on the migrated data using the velocity from the velocity analysis.
A system for processing converted wave seismic data comprising:
- means for providing a zero-offset gather substantially uncorrected by normal move-out;
- means for performing migration on the zero-offset gather;
- means for performing velocity analysis on the migrated zero-offset gather;
- and
- means for performing NMO on the migrated data using the velocity from the velocity analysis.
A system for processing converted wave seismic data comprising:
- a migration module positioned and arranged to receive a zero-offset gather and output a migrated set of data substantially independent of velocity analysis;
- a velocity analysis module positioned and arranged to receive migrated data from said migration module and perform velocity analysis on the migrated data;
- and
- a NMO module positioned and arranged to receive a velocity model from said velocity module and the migrated data from said migration module and perform NMO on the migrated data using the velocity from the velocity analysis.
Dependencies are inferred from the claim text.