Reverse time migration for offshore Vietnam dataset
Abstract
Reverse time migration (RTM) has been considered as the most accurate seismic pre-stack depth migration technique for complex geological conditions because it handles full wave field upward and downward propagation. It has widely been applied in the field data set as the computing hardware has been fast developed to meet the need of mega data handling. Especially, the graphic processing unit (GPU) applied to seismic data processing has improved the speed and the efficiency of the computation. This paper presents the theoretical equations of RTM and verifies the accuracy of the algorithm by applying both synthetic and real seismic data set offshore Vietnam. The authors also develops the accelerated GPU implementation of RTM (GPU-RTM) for usage at the Exploration and Production Centre (EPC) of the Vietnam Petroleum Institute (VPI). The implementation results have shown that the time computing of GPU-RTM using NVIDIA Quadro K5000 is tens of times faster than the single CPU-RTM.
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