储层非均质性描述的地质统计学方法
GEOLOGICALSTATISTICS OF RESERVOIR HETERO-GENEITY DESCRIPTIONHE Yan ( Southwest Petroleum Inst , Nanchong Sichuan 637001, China) , YIN J un , WU NianOsheng. JOURNAL OF SOU THW ES T PETROL EUM INS TI TU T E , V OL . 23 , NO. 3,13 - 15 ,2001ISSN1000 - 2634 , IN CHINES E)
摘要: 储层非均质性对油气的聚集、产出、分布和油气藏的形成等起着至关重要的作用。
Theheterogeneity of reservoir is one of the most important factors to control theaccumulation , production and distribution of oil and gas.
因此,储层非均质性描述在石油勘探和开发中具有重要的意义。
Therefore ,it is important for the heterogeneity of reservoir to be studied.
储层非均质性既具有结构性,又具有随机性,是区域化变量。
Heterogeneityof reservoir is treated as regional variation , and it is not only instructural nature , but also in stochastic nature.
根据地质统计学的理论,通过半变异函数,在前人工作的基础上,利用k 阶球状模型拟合实验半变异曲线,利用线性规划法实现了k阶球状模型的最优拟合。
Based on thework of Jiao Xiguo et . al ,the theory of geological statistics , linearprogramming and through variation function , the experimental variationfunction curve is matched by k - th spherical model.
提出了评价储层非均质性的综合评价指标,对储层非均质性的变化幅度、变化速度以及变化的随机性进行定量描述。
The aggregatein- dex that appears the variation magnitude and variation speed and thevariation nature is roposed to describe quantitatively the variation nature andcomplexity of heterogeneity.
具体实例表明,该方法具有一定的优越性和实用性
With practicalexamples , the advantage and practicalapplicationof this method can be seen.
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