Method for extracting offset domain common imaging gathers based on reverse time migration
The invention provides a method for extracting offset domain common imaging gathers based on reverse time migration and belongs to the field of seismic data imaging treatment. The method comprises the following steps: each computer node performs reverse time migration treatment on shot data to acqui...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
29.04.2015
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a method for extracting offset domain common imaging gathers based on reverse time migration and belongs to the field of seismic data imaging treatment. The method comprises the following steps: each computer node performs reverse time migration treatment on shot data to acquire a reverse time migration shot domain imaging data volume and saves the reverse time migration shot domain imaging data volume in a local disk of the computer node; common imaging gathers of the multi-node-based reverse time shot domain imaging data are extracted. The method overcomes the defects that all common imaging gather data volumes cannot be saved in the internal memory of a computer, makes the best of available internal memory resources of the computer, reduces the I/O operation workload of the disk, enables lots of I/O operations to be shared by multiple nodes, and realizes efficient extraction of the reverse time migration offset domain common imaging gathers. |
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Bibliography: | Application Number: CN20131489545 |