地震勘探中多次波的识别和压制

Identification and Suppression of Multiple Waves in Seismic Exploration

多次波是地震勘探中较常见的干扰波,多次波的出现和存在,使得地震成像不真实,使目的层反射波的振幅、频率和相位发生畸变,影响了地震成像的真实性和可靠性,因此如何有效地压制多次波成为地震勘探中的一个关键问题。阐述了多次反射波产生的原因及识别方法,介绍了目前几种具有代表性的多次波消除压制技术,并对其效果和特点进行了评述。

Multiple waves are common interference waves in seismic exploration,whose emergence and existence makes seismic imaging untrue,and makes the amplitude,frequency and phase position of reflection wave distorted,which affects the reality and reliability of the seismic imaging,so how to effectively suppress the multiple waves in seismic exploration becomes a key issue.Described the causes of multiple waves and identification method,introduced some representative suppression and removal techniques of multiple waves currently,and then made an evaluations on their effectiveness and characteristics.