空间非均匀采样地震数据叠前重构在连片处理中的适应性研究

Research on the adaptability of pre-stack reconstruction of spatially nonuniform sampling in seismic data processing

非均匀地震数据重构技术是地震资料处理中的重要技术,它可以改变面元属性,使面元内的方位角、偏移距及覆盖次数不均匀性得以改善,从而实现了不规则空间采样的地震采集数据空间规则化,减少偏移算子带来的假频、振幅畸变等副作用,避免偏移画弧现象,为后续的叠前偏移精确成像起到积极作用,但同时数据重构也存在着适应性,它为我们资料处理带来有利条件的同时也可以导致副作用的产生,本文详细的对现有商业软件最新数据重构技术在SD-TL三维地震资料连片处理中的适应性进行了研究。

Reconstruction technique for non-uniform seismic data is an important technique in seismic data processing. It can change the bin properties, the azimuth, offset and coverage uniformity of bin element can be improved, so as to achieve the regular spatial sampling of irregular seismic acquisition data of space, and reduce of aliasing from migration operator, the amplitude distortion and other side effects, avoiding the migration arc phenomena, having a positive play for the pre-stack migration accurate imaging later, but at the same time the data reconstruction also has adaptability, it brings favorable conditions for our data processing but also can cause side effects, this paper detailed the adaptability of existing commercial sottware of the latest in the SD-TL data reconstruction of 3D seismic processing is studied.