多聚焦(MF)成像技术综述

MF(多聚焦)技术是一组以巨模型——独立成像为特征的地震成像方法,在该方法中,大的地震道的叠合道集进行叠加,而每一个叠合道集都横越许多共中心点道集,它用聚焦参数的最优化过程代替了传统偏移方法中的速度模型修正,极大避免了“速度难题”,MF技术可以广泛应用于地震数据处理和反演的各个方面(处理复杂的近地表难题、多次波的等),在解决复杂地质问题时更是有着独到的效果。因此,MF成像技术在地震勘探中将有广阔的应用前景。

The summarize of multifocusing imaging technology

MF(Multi-focus)technology belongs to a group of methods that can be characterized as macro-model and independent imaging methods. In this method large superpose of seismic traces arte stacked, each of which can span many common midpoint(CMP) gathers. This method applies optimized focusing parameters updating instead of traditional velocity updating and MF technology efficiently avoids the "velocity problem" when getting the precise imaging. MF method can be applied widely in the field of seismic data processing and inversion (i.e. near surface problem, multiple removal, etc.), specially it can do well in complex geology problems. Therefore , the MF technology will have many developable chances in seismic exploration.