摘要
针对LHK地区目的层砂泥岩纵波阻抗叠置和AVO异常不明显以及储层地质条件复杂的特点,应用叠前弹性阻抗反演技术体系对该地区油气层的分布做出预测。其关键步骤包括:流体替换模型分析与弹性参数交会分析相结合的敏感参数筛选,不同角道集地震数据体的子波估算和精细标定,弹性参数的反演计算。反演得到的拉梅系数乘以密度体与纵波阻抗体交汇的结果,反映了油气层分布特征,预测结果已被钻井证实。
Considering the P-impedance overlap of sand-shale, the faint AVO response.and the complex reservoir conditions at the tar- get zone in LHK field, the authors applied the pre-stack elastic parameters to predicting the distribution of hydrocarbon. This technique system includes three critical steps, i.e. , filtering of sensitive parameters by analysis of fluid substitution and elastic parameters crossplot, wavelet estimation in different partial stacks and fine synthetic seismogram correlation, and elastic parameters inversion and computation. The result of the intersection of lain ＊ density body with P-impedance body can describe hydrocarbon distribution, which has been proved by drilling.
出处
《物探与化探》
CAS
CSCD
北大核心
2011年第5期666-670,688,共6页
Geophysical and Geochemical Exploration
关键词
叠前弹性阻抗反演
流体替换
敏感参数AVO
合成记录标定
pre-stack elastic inversion
fluid substitution
sensitive parameter AVO
synthetic seismogram correlation
