两种转换波共转换点道集抽取方法的对比分析与应用  

Comparison and application of two kinds of converted wave common conversion point binning methods

作　　者：杨维[1] 王小卫[1] 边冬辉[1] 

机构地区：[1]中国石油勘探开发研究院西北分院,甘肃兰州730020

出　　处：《岩性油气藏》2013年第6期95-97,111,共4页Lithologic Reservoirs

摘　　要：转换波在传播过程中的路径是不对称的,常规的共中心点道集抽取方法并不能满足共转换点叠加的需求,因此,针对转换波研究共转换点(CCP)道集的抽取方法十分必要。目前应用的共转换点道集抽取方法主要有渐近线方法和目的层方法。在对这2种方法进行对比分析的基础上,针对某工区转换波地震数据,进行了共转换点道集的抽取,并对所得到的叠加剖面进行了对比分析。结果表明:目的层共转换点道集抽取方法优于渐近线方法,该方法能够灵活针对任一深度的目的层位计算转换点位置,在转换波数据处理过程中能够发挥重要的作用。It is known that the conventional common midpoint binning method can not be used in converted wave processing because of the asymmetry during the converted wave propagation. Therefore, the research on converted wave common conversion point （CCP） binning method is very important. At present, asymptotic method and target-oriented method are two main kinds of common conversion point binning methods. Through the comparison and analysis of these two kinds of methods, this paper carried out common conversion point binning of converted wave data in the actual field, and compared the stack sections obtained by the two kinds of methods. The result shows that the target-oriented method can calculate the conversion point position of the target time or layer flexibly, which is better than asymptotic method.

关 键 词：转换波 共转换点道集 渐近线抽取方法 目的层抽取方法 

分 类 号：P631.4[天文地球—地质矿产勘探]