AVO地震反演在油气预测中的应用
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摘要
利用AVO分析和地震反演相结合的三维多道全局优化地震反演技术和方法进行叠前反演。结果得到纵横波波阻抗、纵横波速度比、泊松比等相关数据 ;结合岩性贡献概率量板 ,最终得到岩性数据体。将其用于岩性预测和地下含油气信息检测后效果良好。由此认为 :本方法能处理各种道集数据 ,是一种新的流体预测和岩性预测方法
Prestack inversion is performed by combining AVO analysis and seismic inversion which are three dimensional, multi traces, and full scale optimized. Relevant data such as P wave and S wave impedance, velocity ratio of compressional to shear wave, and Poisson's ratio can be obtained. Combining with lithologic contribution probability chart, lithologic data can be obtained. It has shown good result after being used for lithology prediction and in situ hydrocarbon detection. Hence it is thought that this method can process various trace gather, is a new fluid and lithology prediction method.
Prestack inversion is performed by combining AVO analysis and seismic inversion which are three dimensional, multi traces, and full scale optimized. Relevant data such as P wave and S wave impedance, velocity ratio of compressional to shear wave, and Poisson's ratio can be obtained. Combining with lithologic contribution probability chart, lithologic data can be obtained. It has shown good result after being used for lithology prediction and in situ hydrocarbon detection. Hence it is thought that this method can process various trace gather, is a new fluid and lithology prediction method.
引文
[1]王卫华用相关分析法寻找AVO异常[J]石油地球物理勘探,1991,26(3)
[2]shueyRT AsimplificationoftheZoeppritzequations:Geophysics[J],1985,50:609～614
[3]SmithGCandGidlowPM Weightedstackingforrockpropertyestimationanddectionofgas:GeophysicalProspecting[J],1987,35:993～1014
[2]shueyRT AsimplificationoftheZoeppritzequations:Geophysics[J],1985,50:609～614
[3]SmithGCandGidlowPM Weightedstackingforrockpropertyestimationanddectionofgas:GeophysicalProspecting[J],1987,35:993～1014
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