摘要
为了克服传统转换波静校正方法应用效果不佳的缺点,本文介绍一种转换波延迟时静校正方法,此法根据转换波勘探时垂直分量记录的纵波近地表模型及水平分量记录的初至时与纵波分量的初至时之差,求取转换波延迟时,并根据转换波延迟时建立横波的近地表模型,从而求取接收点的横波静校正量。文中给出了转换波延迟时静校正量的计算公式,并用实际地震数据进行了检验。结果表明此法应用效果较好,可以推广应用。目前该静校正方法已经集成到KLSeis采集软件中。
In order to overcome the shortcoming that the effects of traditional converted wave static corrections are very poor,the paper introduced a converted wave static corrections method by delay times, which computes P-SV converted wave delay times according to the P-wave near-surface models recod-ed on vertical components and differences between first breaks on the horizontal components and vertical components, then constitutes S-wave near-surface model according to P - SV converted wave delay times so that the S-wave statics ar receiving points could be computed. The paper gave computational formula of converted wave statics by delay times and proved the method by practical seismic data. The results showed the good applied effects of the method,which can be popularized. Now,the static corrections method has been integrated into the KLSeis acquisition software.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2006年第1期13-16,共4页
Oil Geophysical Prospecting
关键词
转换波
延迟时
静校正
converted wave,delay time,static correction
