Pre-stack reverse time migration seismic data processing method and system by integral method

The invention discloses a pre-stack reverse time migration seismic data processing method by an integral method. According to the method, an integral pre-stack reverse time migration calculation method and data access characteristics are pre-analyzed, and a MapReduce framework is adopted during data management and access; in the specific migration calculation, CUDA programming is adopted to realize cooperative acceleration of CPU/GPU. The method specifically comprises the steps of seismic data preparation, input data division, migration task operation, Reduce operation starting for combining temporary imaging results in all node distribution type file systems, and final imaging result output. The invention further discloses a system for processing the pre-stack reverse time migration seismic data by the integral method. Compared with a conventional pre-stack reverse time migration method based on a CPU cluster, the method provided by the invention is clear in imaging, and the mass data can be more conveniently processed; the calculation efficiency is improved by 15 times, and the processing efficiency is greatly improved.