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勘探早期，由于钻井数少、井距大，地质资料的限制，用常规方法建立的储集层砂体骨架模型很难合理地认识地下砂体的分布特征。为此本文提出地面与地下相结合，在储集层建库的基础上，用改进的布尔方法建立起具有多种岩石相的骨架模型，从而达到精细表征储集层砂体分布特征的目的。在实例中的克拉研究区只有4口井，井距最大几十公里，应用上述方法，先作野外调查，对不同岩石相赋于不同的宽厚比；再确定总的砂体和剖面面积的比值以及不同岩石相在剖面中的比值；经统计本段不同岩石相的厚度分布和纵横向上的分布概率，最后采用改进的布尔方法随机模拟建立多种岩石相砂体骨架模型做储集层描述和预测。其结果较好地反映了该区白垩系巴什基奇克组储集层砂体的分布规模、连续性和接触方式，同时证实了该方法建模参数选择的合理性和可信度。图2参11（李建国摘）
In the early stage of exploration, due to the small number of wells, large well spacing and limited geological data, it is difficult to understand the distribution characteristics of underground sand bodies with the reservoir sand body model established by conventional methods. Therefore, this paper proposes that the ground and underground are combined. Based on the reservoir building, a skeleton model with various rock facies is established by the improved Boolean method, so as to achieve the purpose of finely characterizing the distribution characteristics of reservoir sand bodies. In the example, there are only 4 wells in the Carat study area and the well spacing is several tens of kilometers. Using the above method, field investigation was first conducted and different rock facies were assigned to different aspect ratios. The ratio of total sand body area to section area And the ratio of different lithofacies in the profile. The thickness distribution and vertical and horizontal distribution probabilities of different lithofacies in this section are calculated. Finally, a modified Boolean method is used to simulate and establish various lithostratigraphic sandbody models to describe the reservoir profile prediction. The results reflect the distribution, continuity and contact of sand bodies in the Cretaceous Bashijiqike Formation in this area, and also verify the rationality and credibility of the modeling parameters of this method. Figure 2 Senate 11 (Li Jianguo picks)