velocity of migration

In energy resource seismic prospecting, to best realize time difference correction of pre-stack tilted stratum, advance velocity analysis and overlay precision, present a sort of celerity realize pre-stack partial migration algorithm, called migration to zero offset ( MZO) algorithm.

在能源地震勘探中，为了更好地实现叠前倾斜地层的时差校正，提高速度分析和叠加的精度，提出了一种快速实现叠前部分偏移的算法，即零偏移距化（MZO）算法。

The migration velocity of gas through fault zone is bigger than that of oil through fault zone, in the same condition of dynamic force, it indicates that the remaining oil ability of fault zone is stronger than the remaining gas ability of fault zone.

在相同动力条件下，天然气通过断裂带的运移速度较原油通过其运移速度快，表明断裂带滞留油的能力较其滞留气的能力强。

Thinking about the importance of Pre-SDM to target layer imaging and the sensitivity of it to velocity-depth model, seismic workers have tumed their attention to migration velocity modeling in recent years.

考虑到叠前深度偏移对目的层成像的重要性和对速-深模型的敏感性，近年来，地震工作者已把注意力转移到偏移速度建模上。

Furthermore, it has no limitation to velocity and the output is depth profile, the ADPI reverse-time migration is one of depth migration methods.

由于没有对速度的限制，且得到的是深度剖面，因此属于深度偏移的范围。

Its key techniques include datum correction through upward and downward continuations of wave field, velocity model modification of imaging points based on common imaging gather in depth domain, and migration anti-alias filter through interpolation of migration data before and after application of imaging condition equation.

此方法包括波场向上和向下延拓进行基准面校正、基于深度域共成像道集的成像点速度模型修正技术和应用成像条件前后作偏移数据内插的偏移反假频技术等核心技术。