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为分析沉积盆地硅质碎屑岩充填的控制因素、预测储层特征及分布,以半经验算法为基础研制了二维地层模拟程序.以盆地沉降、海(湖)平面变化及沉积物补给速率为主要控制因素,对沉积盆地的充填作用进行模拟.结果表明:沉积层序的几何形态、岩相分布及层序间的关系等,主要受沉积物容纳空间在时空上的变化和碎屑供给速率的控制.辽东湾地区东营组中期沉积层序的模拟应用实例证明:该方法有助于分析盆地充填的主控因素,在钻井资料非常有限的情况下,还可以预测储层分布,控制地震资料的解释,检验勘探方案.
In order to analyze the controlling factors of siliceous clastic filling in sedimentary basins and predict the reservoir characteristics and distribution, a two-dimensional modeling program based on semi-empirical method was developed.The sedimentation of the basin, the change of sea level and sediment recharge rate As the main controlling factor, the filling action of the sedimentary basin was simulated.The results show that the geometry and lithofacies distribution of the sedimentary sequence and the relationship between the sequences are mainly affected by the change of sediment storage space and the supply of debris Rate control.The simulation of middle sedimentary sequence of Dongying Formation in Liaodong Bay shows that the method can be used to analyze the main controlling factors of basin filling and predict the distribution of reservoirs and control the earthquake when drilling data is very limited Data interpretation, inspection of exploration programs.