【摘要】 通过深水浊积扇储层沉积概念模型研究和在此基础上的序贯指示模拟试验,建立4种沉积微相速度、密度、声阻抗及孔隙度等参数统计分布模型,模拟了沉积相空间分布,利用相与波阻抗比例模型的滤波作用原理,来控制非储层高波阻抗数据干扰,建立合理的相模型,在相模型的基础上,应用序惯高斯模拟方法模拟空间孔隙度变化。研究表明,以概念模型和沉积相参数分布模型为基础,对不同类型的变量进行分类处理、多步模拟的方法能够较好地控制干扰,提高纵向分辨率,建立符合地质实际的孔隙度模型。更多还原

【Abstract】 Through the study of the deep water turbidity-fan reservoir sedimentary conceptual model and the sequence indication simulation test,the distribution models of velocity,density,impedance and porosity of different sub-facies,were built.The spatial distribution of sub-facies in 3 D was simulated.In the process of facies simulation,the high wave impedance interference of nonreservoir can be filtered out using the filtration acting pricinple of facies and impedance calibration model.Based on the reasonable facies model,the spatial porosity model was built using sequence Gauss simulation method.The results show that the variables were classified to control the interference using multi-step modelling method.The vertical discernibility was increased based on the conceptual model and the parameters distribution model.The porosity model conforming to reality was built.更多还原