模糊数学法在储层评价中的应用--以鄂尔多斯盆地白于山地区延长组长4＋5油层组为例  

Application of Fuzzy Math Method to Reservoir Evaluation——Taking Chang 4+5 Reservior of Yanchang Formation in Baiyushan Area in Ordos Basin as an Example

作　　者：武春英[1] 韩会平[2] 蒋继辉[3] 李勇[4] 王宝清[5] 李园园[4] 张琬茜[4] 

机构地区：[1]长庆油田采油六厂,陕西西安710021 [2]长庆油田勘探开发研究院,陕西西安710021 [3]长庆油田录井公司,陕西西安710021 [4]长安大学地球科学与资源学院,陕西西安710054 [5]西安石油大学油气资源学院,陕西西安710061

出　　处：《地球科学与环境学报》2008年第2期156-160,共5页Journal of Earth Sciences and Environment

摘　　要：运用模糊数学综合评判法，确定储层评判对象因素集，通过对鄂尔多斯盆地白于山地区延长组长4＋5储集层研究，认为孔隙度、渗透率、排驱压力、分选系数、孔喉均值是储层评判对象因素集。经过储层评判对象因素集逐步回归分析，建立Ⅰ～Ⅳ类储层分类评价标准，其中Ⅰ～Ⅲ类为有效储层，Ⅳ类为非储集层。最后用Q型聚类统计对储层分析，表明白于山地区长4＋5储集层属于Ⅱ类，即中等储层。This paper studies the object factor sets of reservoir evaluation in Baiyushan area through comprehensive evalution by the method of fuzzy mathematics. Firstly, the porosity, permeability, displacement pressure, sorting coefficient, pore throat are ascertained to be the object factor sets, and the judgement classificatory standard for evaluation of types Ⅰ～Ⅳ is set up by progressive regression analysis, among which, the reservoir types Ⅰ～Ⅲ are effective reservoirs, and there is no reservoir in type Ⅳ. Then, the reservoir is analyzed overall by Q-model gathering statistics. The result shows that the sandstone belongs to type Ⅱ , that is, medium reservoir.

关 键 词：鄂尔多斯盆地 储层 模糊数学 逐步回归分析 Q型聚类统计 分类评价 

分 类 号：P618.130.21[天文地球—矿床学] TE122.24[天文地球—地质学]