The basic principle and method of 3d stochastic modeling of sedimentary microfacies are discussed according to geological and acoustic impedance data of well - logging constrained seismic inversion , and a case study according to stochastic modeling of fluvial facies reservoir of the minghuazhen formation of neocene in a certain block of bohai bay basin is used to show the general process of this research 摘要探讨了综合应用地质及测井约束地震反演信息进行三维沈积微相随机建模的基本原理、思路与方法， ?以渤海湾盆地某区块新近系明化镇组河流相储层?例，说明这一研究过程的基本步骤，包括井眼沉积微相解释、测井约束地震反演、波阻抗与地质相的概率关系分析、随机模拟方法选择、地质统计特徵分析、三维随机建模、随机模拟预测的多解性评价。
