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逆时偏移和全波形反演方法的应用对复杂地质条件下的石油勘探具有重要意义,但由于现代地震采集技术的发展,地震勘探数据量迅速增加,逆时偏移和全波形反演方法的技术开发面临如何有效适应大模型和海量数据,缩短计算时间、降低处理成本.为此,本文根据文献调研,评述了科学计算领域的两类方法,多尺度计算的方法和指数映射的方法,指出前者有利于快速计算,后者可以适应非均匀介质,如果将他们结合应用于地震波传播问题,有可能改进逆时偏移和全波形反演方法的并行计算效率.
The application of inverse time migration and full waveform inversion is of great significance to petroleum exploration in complex geological conditions. However, due to the development of modern seismic acquisition technology, the data amount of seismic exploration rapidly increases, and the reverse time migration and full waveform inversion methods How to effectively adapt to the large model and massive data, shorten the calculation time and reduce the processing cost.Therefore, this paper reviews two methods in the field of scientific computing, the method of multi-scale calculation and the method of index mapping based on literature research, It is pointed out that the former is good for fast calculation and the latter can be adapted to heterogeneous media. If they are combined with seismic wave propagation, it is possible to improve the parallel computing efficiency of inverse time migration and full waveform inversion.