主成分分析法评价储层层间渗透率非均质性——以王官屯油田王23-王27断块为例

Evaluation of Reservoir Permeability Heterogeneity by Principal Component Analysis——Taking Wangguantun Oil Field Wang 23-27 Block for Example

为解决油田生产中储层层间非均质性评价的不确定性,以黄骅坳陷王官屯油田王23-王27断块为例,应用数理统计中的主成分分析法评价储层层间渗透率非均质性。通过单砂层划分,单砂层层间渗透率非均质程度参数计算,对数据进行主成分分析处理,得出该油藏的层间渗透率非均质程度为中等非均质性的结论。解决了从不同参数角度出发所得出的评价结果相互矛盾的问题,确立了层间变异系数作为该断块渗透率层间非均质性的重要评价参数。

In order to solve the problem of uncertainty in the reservoir interlayer heterogeneity evaluation,taking Wang23-Wang 27 block in Wangguantun oilfield,Huanghua depression as an example,reservoir interlayer permeability heterogeneity is evaluated by using principal component analysis of mathematical statistics.Based on the research of single sand division,the calculation of the single sand layer permeability heterogeneity parameters and the analysis of datas with the method of principal component analysis,the reservoir interlayer permeability heterogeneity is evaluated as medium heterogeneity.The contradiction between the evaluation results obtained by the different parameters is solved.The variation coefficient between layers is as the most important evaluation parameter for the heterogeneity of the permeability of the fault block.