3D prestack reverse time migration based on multiple-GPU collaboration
Tang Xianggong1,2, Kuang Bin2, Du Jixiu2, Meng Xiangbin2, Sui Zhiqiang2, Shan Lianyu2, Wang Huazhong1
1. School of Ocean and Earth Science, Tongji University, Shanghai 200092, China;
2. Geophysical Research Institute, Shengli Oilfield Branch Co., SINOPEC, Dongying, Shandong 257022, China
Abstract：Data size of single seismic shot record is much larger than before as high-precision seismic exploration is increasingly demanded.The 3D RTM computing strategy formerly developed based on single GPU card meets no longer the needs of larger-scale seismic data processing. We illustrate here a new 3D RTM method based on multipleGPU collaboration with imaging domain decomposition strategy.This method can meet 3D RTM calculation of any current industrial-scale single shot record.Tests on seismic data of western China show that the method has higher imaging precision and good computational efficiency.
