弹性层系的反射系数正演  

FORWARD RESEARCHES ON THE REFLECTION COEFFICIENT OF THE ELASTIC LAYER SYSTEM

作　　者：梁立锋[1] 刘秀娟[1] 

机构地区：[1]中国地质大学,湖北武汉430074

出　　处：《物探与化探》2007年第2期174-177,共4页Geophysical and Geochemical Exploration

摘　　要：应用层系位移和应力递推公式,针对固体多层介质,导出了纵、横波反射、透射系数公式,并对新疆某油田模型进行了试算,探讨了反射系数与入射角之间的变化规律。结果表明,该区含气砂岩易于检测。通过zoeppritz方程和垂直入射的反射系数解析式分别对单界面和本文模型进行了检验,结果是完全一致的。This paper used the formula of layer system offsetting and stress recurrence in the calculation of solid multilayer elastic media. The formulae for calculating reflection and transmission coefficients of P and S-wave can be deduced. This paper tried to calculate several models for an oil field in Xinjiang and discuss the variation of the reflection coefficient with the incident angle. It is shown that the sand with gas is likely to be detected. Using Zoepptitz＇s equation and the resolution of reflection coefficients of uptight incident angle, the authors tested the single interface and the model in this paper respectively, and the results are coincident with each other.

关 键 词：弹性层系 反射系数 AVO 正演 入射角 

分 类 号：P631.4[天文地球—地质矿产勘探]