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不同开发时期砂岩油藏储层非均质三维模型特征

杨少春  王瑞丽 

摘 要:以济阳坳陷东营凹陷胜坨油田二区为例,简述非均质综合指数的计算、作用和意义.按储层随机建模的思路和方法建立非均质综合指数三维模型,主要包括储层数据准备、构造模型、非均质综合指数分析、非均质建模和显示5个环节,直观表征储层的空间非均质性特征.分析了东营组三段开发初期、中期和后期的非均质综合指数变差函数和三维模型特征,得出了不同开发时期储层非均质性的变化规律.结果表明,随注水开发的进行,变程(a)减小,基台值(c0+c)增大,块金效应值(c0)为0.开发初期储层以中等非均质性为主,中期以较强-中等为主,后期以较强为主.纵向上,上部的非均质综合指数差异较大,下部的差异相对较小.纵向上的层间和层内非均质性要强于平面非均质性.注水开发加剧了储层的非均质程度.
关键词:非均质综合指数;储层非均质性;三维模型;开发时期;胜坨油田;东营凹陷
分类号:TE112.2  文献标识码:A

文章编号:0253-9985(2006)05-0652-08

Characteristics of heterogeneous 3-D model of sandstone reservoirs in different development stages

Yang Shaochun  Wang Ruili 

 

基金项目:国家留学基金委出国留学资助项目(200233)
作者简介:杨少春(1962-),男,教授、博士生导师,油气地质、油藏描述及剩余油分布研究
作者单位:杨少春(中国石油大学,油藏地质山东省重点实验室,山东,东营,257061) 
     王瑞丽(中国海洋石油有限公司,湛江分公司,技术部,广东,湛江,524057) 

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