地震资料处理中的迭代法衰减多次波技术  

The Application of Multiple Attenuation Technique by Iterative Method to Seismic Data Processing

作　　者：王敏[1] 

机构地区：[1]中石化江汉油田物探研究院,湖北武汉430035

出　　处：《工程地球物理学报》2015年第6期800-807,共8页Chinese Journal of Engineering Geophysics

摘　　要：多次波衰减技术是地震资料常规处理中的关键技术之一。目前大多数衰减多次波的方法都会在一定程度上损伤有效信号。迭代法多次波衰减技术作为一种压制多次波的手段,通过在去除的噪声中提取非常微弱的有效信号,再与原有效信号重构数据,经过多次迭代,在衰减多次波的同时,尽量保护有效信号,达到压制多次波并最大限度保留有效信号的目的。它不只是单一的一个模块,而是一种"信噪分离"思想,是各种专项技术的组合。在实际应用中,利用迭代法衰减近道多次波、剩余多次波,经过多次迭代,有效去除多次波的同时,把噪声衰减到可以接受的程度。这种思路无论是用于去噪还是去除多次波,都有良好的应用前景。Multiple attenuation technique is one of the key technologies in the conventional processing of seismic data.At present,most of the methods for the attenuation of multiple waves will damage the effective signal.Multiple attenuation technique by iterative method is used as a means to suppress multiple waves,which can extract the weak effective signal from the removed noise and reconstruct data with the effective signal.Based on multi-iterations,this method can attenuate multiple waves,at the same time tries to protect the effective signal,which can achieve the purpose that can suppress multiple waves and keep the effective signals in maximum.It is not just a single module,but a＂signal noise separation＂concept,which is a combination of a variety of special technology.In practical application,by using iterative method to attenuate multiples at near offsets traces,residual multiples,after multi-iterations,multiples can be removed effectively,and the noise can be attenuated to acceptable levels.This method can have a good application prosepect in de-noising and removing multiples.

关 键 词：多次波 剩余多次波 迭代法 地震资料处理 

分 类 号：P631.4[天文地球—地质矿产勘探]