利用叠前地震数据预测裂缝储层的应用研究  

The application of pre-stack seismic data in predicting the fractured reservoir

作　　者：黄伟传[1] 杨长春[1] 王彦飞[1] 

机构地区：[1]中国科学院地质与地球物理所,北京100029

出　　处：《地球物理学进展》2007年第5期1602-1606,共5页Progress in Geophysics

基　　金：国家973项目(2005CB422104)资助

摘　　要：叠前地震资料储层预测技术是在Zoeppritz方程基础上发展起来的,通过处理地震数据随着不同入射角地震反射属性,得到地震属性随着入射角变化而改变,研究分析得到反映岩性变化的纵波速度、横波速度、泊松比和截距与梯度剖面,预测裂缝储层的发育及分布.同时根据不同方位角地震资料属性,计算得到不同方位角目的层的属性差异,使用各向异性椭圆公式作拟合,求出背景趋势A和各向异性因子B,利用最大振幅包络方位和对应θ,求出裂缝发育优势方向,及B/A各向异性因子,实现对裂缝储层预测.Development of the Pre-seismic reservoir prediction is based on the function of Zoeppritz. By processing the different seismic attribution of different incidence angle and the analysis of the change of the attribute with incidence angle. Deriving P-wave velocity S-wave velocity Poisson ratio intercept and gradient profiles which indicate the distri- bution of fractured reservoir. We can also get the seismic attribute of different azimuth angle, and the different seismic attribute , fitting them by ellipse, draw background trend A and the anisotropic coefficient B, get the direction of the fractures by the max amplitude azimuth, and the anisotropic coefficient B/A, estimate the fractured reservoir,

关 键 词：叠前反演 各向异性 裂缝储层 方位角 

分 类 号：P631[天文地球—地质矿产勘探]