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根据指示条件模拟的基本原理，提出了建立渗透率空间分布模型的三维指示条件模拟方法。条件模拟是一种非参数 模拟方法。同转向带法等其它高斯模拟方法相比，它不要求模拟变量符合特定的概率分布模型，这在模拟象渗透率这样具 有奇异值的参数时非常有效。该方法在松辽盆地大庆长垣北部喇嘛甸油田北实验区进行了实际应用。在进行不同流动单 元三维渗透率分布模拟时，首先从油田开发数据库中提取相关的数据，然后用井模型将渗透率值转化为指示值，得到在井 中连续分布的渗透率剖面。根据各井中连续分布的指示值计算出不同渗透率等级的指示变异函数，并用指数函数进行最 优拟合，最后用指示条件模拟方法计算出萨尔图、葡萄花和高台子油层渗透率指示值的三维数据体和不同等级渗透率岩 石的厚度分布。研究结果不仅可以作为油藏数值模拟的输入，在预测剩余油分布时也可以作为重要的参考信息。
According to the basic principle of the indicated conditions simulation, a three-dimensional simulation method of indicating the spatial distribution model of permeability is proposed. Conditional simulation is a non-parametric simulation method. It does not require that simulated variables conform to a particular probability distribution model, as compared to other Gaussian simulation methods such as the steering band method, which is very effective in simulating parameters with a singular value such as permeability. The method was applied in the northern experimental area of Lamadian Oilfield in the north of Daqingyuanzhong in the Songliao Basin. When simulating the three-dimensional permeability distribution of different mobile units, the related data are first extracted from the oilfield development database and then the permeability model is used to convert the permeability values into the indicated values to obtain the continuous permeability profile in the well. According to the continuous distribution of indication values in each well, the indicated variograms of different permeability grades are calculated and exponential function is used to perform the best fitting. Finally, the indication conditions are used to calculate the permeability of Saertu, Putaohua and Gaotaizi reservoirs And the thickness distribution of rocks with different levels of permeability. The results of this study can not only be used as input for reservoir numerical simulation, but also serve as important reference information in predicting remaining oil distribution.