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冲积扇体系岩相空间上复杂多变，储层非均质性严重。单凭测井、岩心等资料无法达到对储层的精确描述。运用地质统计学方法，综合使用地震数据，可以更精确地反映储层参数的空间变化规律，求取任意位置、任意方向的空间变异函数，从而建立更精确的定量储层地质模型。该方法综合利用了井资料的高垂向分辨率及地震资料的高横向分辨率，地震反演参数剖面在建立确定性模型时被用作软约束数据来提取地层格架信息及储层参数的空间变化规律，原始地震记录作为随机模拟部分的硬数据，以优化模型及检验其可信度。
The alluvial fan system is complex and variable in lithofacies space, and the reservoir heterogeneity is serious. Data such as logs and cores alone can not accurately describe the reservoir. Using the method of geostatistics and the integrated use of seismic data, the spatial variation law of reservoir parameters can be reflected more accurately, and the spatial variation function of arbitrary position and direction can be obtained to establish a more accurate geological model of quantitative reservoir. The method utilizes the high vertical resolution of well data and the high lateral resolution of seismic data. The seismic inversion parameter profile is used as soft constraint data to extract the information of stratigraphic framework and reservoir parameters when establishing the deterministic model Spatial variation, raw seismograms are used as hard data for stochastic simulations to optimize the model and verify its credibility.