【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。更多还原

【Abstract】 Considering the P-impedance overlap of sand-shale,the faint AVO response and the complex reservoir conditions at the target 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 cross-plot,wavelet estimation in different partial stacks and fine synthetic seismogram correlation,and elastic parameters inversion and computation.The result of the intersection of lam*density body with P-impedance body can describe hydrocarbon distribution,which has been proved by drilling.更多还原