Water depth of block X in Equatorial Guinea is from 100 to 2000 meter,the problem of looking for deep-water turbidite sandstone reservoir needs to be solved for X block. According to the statistical analysis of the drilled wells,good porosity reservoir can be distinguished by intersection of Vp/Vs and P wave impedance,therefore seismic facies analysis and prestack elastic wave impedance inversion technique were put forward to predict and fine engrave reservoir of prospect A. Reservoir of prospect A has low Vp/Vs, characteristics, and its plane distribution has fan-shaped, and was surmised as deep-water fan turbidite sandstone, which was proved by the drilling well A - 1. The successful application of this method has some reference to West Africa deep-water turbidite sandstone reservoir prediction.%赤道几内亚X区块水深100～2000 m,寻找好的深水浊积砂岩储层是X区块急待解决的一个难题.根据已钻井岩石物理统计分析,基于纵波阻抗与纵横波速度比(Vp/Vs)交汇方式可以有效区分孔隙度较高的砂岩储层,提出了地震相分析结合叠前弹性波阻抗反演技术对区块A目 标储层的发育情况进行了预测和精细刻画,认为A目标具有低纵横波速度比的特征,平面呈扇形分布,推测其为一套深水扇浊积砂岩,后经钻探证实了这一认识.该方法的成功应用对西非深水浊积砂岩储层预测具有一定的借鉴意义.
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