川西Q地区须家河组横波预测方法研究

英文篇名：Study of Shear Wave Prediction for Xujiahe Formations in Q Area of West Sichuan Basin
中文刊名：勘察科学技术
英文刊名：Site Investigation Science and Technology
作者：杨远 ; 黄春梅 ; 王宇航
英文作者：Yang Yuan Huang Chunmei Wang Yuhang(Key Lab.of Earth Exploration & Information of Ministry of Education ; Chengdu University of Technology)
中文关键词：须家河组 ; 横波预测 ; 岩石模型 ; 拟合
英文关键词：Xujiahe formations ; shear wave prediction ; rock model ; fitting
出版日期：2013-04-20
机构：成都理工大学地球探测与信息技术教育部重点实验室;
年：2013
期：02
出版单位：勘察科学技术

摘要

准确的横波测井速度是叠前地震反演和属性分析的必要参数。该文针对Q地区须家河组中低孔隙度的特点,利用实测纵横波数据拟合、Greenberg-Castagna、临界孔隙度、Krief、Xu-White等方法对横波速度进行了预测。经过综合分析,在Q地区,通过实测纵横波数据拟合建立的模型和Greenberg-Castagna横波预测模型效果较好,可为之后的叠前地震反演和属性分析奠定基础。
The accurate logging velocity of shear wave is necessary parameter for inversion and attributes analysis of prestack seismic.Based on the medium-low porosity of Xujiahe formations in Q area,the velocity of shear wave is predicted using different methods such as measured P-S wave data fitting method,Greenberg-Castagna method,critical porosity method,Krief,Xu-White method.Through the comprehensively analysis,the model established by measured P-S wave data fitting method and the predicted model by Greenberg-Castagna method have both good effect in Q area.It provides the foundation for inversion and attribute analysis of prestack seismic.

引文

[1]孙福利,杨长春,麻三怀,等.横波速度预测方法.地球物理学进展,2008,23(2):470～474
    [2]Gary Mavko,Tapan Mukerji,Jack Dvorikin.The RockPhysics Handbook:Tools for Seismic Analysis in PorousMedia(1).UK:Cambridge University Press,1998
    [3]马中高,解吉高.岩石的纵、横波速度与密度的规律研究.地球物理学进展,2005,20(4):905～910
    [4]Xu S Y,White R E.A new velocity model for clay-sandmixture.Geophysical Prospecting,1995,43(1):91～118
    [5]许士勇,马在田.快速有效的转换波共转换点叠加技术.地球物理学报,2002,45(4):557～568