Converted-wave Kirchhoff prestack time migration based on CUDA
Yu Qin1,2, Cheng Bingjie3,4, Kong Xuanlin1,2
1. E&P Research Institute,SWPB,SINOPEC,Chengdu,Sichuan 610041,China;
2. SINOPEC Key Laboratory of Multi Components Seismic Technology,Chengdu,Sichuan 610041,China;
3. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu,Sichuan 610059,China;
4. Geophysical Institute,Chengdu University of Technology,Chengdu,Sichuan 610059,China
Abstract：Because of large simulation calculation andtime consumption, the process of converted-wave(C-wave) Kirchhoff prestack time migration is anlow-efficient data processing method and its appli-canon is restricted.CPU-cluster computing is ap-plied widely at present;however CPU-clustershave some problem such as high power consump-tion，large space occupation, and high maintenancecosts.For improving the efficiency and reducingthe computing cost，we propose in this article aparallel algorithm of C-wave Kirchhoff prestacktime migration based on CUDA. Theoretical andreal C-wave data tests on the UPU and CPU plat-forms show that this algorithm is a high perform-ance and low cost C-wave Kirchhoff prestack time migration method as it can improve the calculation efficiency by 100 times.
