3-D parallel shot-gather prestack depth migration
نویسندگان
چکیده
3-D shot-gather prestack depth migration based on wave equation is an important method because of its good capability of imaging complex subsurface structures. In this paper, 3-D parallel shot-gather prestack depth migration with hybrid is developed and implemented. The shot-gather migration has high natural parallel feature because different processor can process shot-gather independently. Such spatial parallelism with message passing interface(MPI) can improve computational efficiency much more. After the basic formulae of wavefield extrapolation of the hybrid method are derived, two numerical examples are completed. One is as the test of our migration program with the SEG/EAEG benchmark model, and the excellent imaging result is offered. The other is the migration example for a 3-D real data. Both the imaging results demonstrate the correctness and effectiveness of our parallel program of 3-D shot-gather migration. It has shown that our parallel program has good potential values to process real data on PC cluster. keywords: 3-D prestack depth migration, shot-gather, hybrid method, MPI parallel, PC cluster. 1
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تاریخ انتشار 2006