吴浩;郭英海;张春林;刘锐娥;

• 1:中国矿业大学资源与地球科学学院

• 2:中国矿业大学煤层气资源与成藏过程教育部重点实验室

• 3:中国石油勘探开发研究院廊坊分院

摘要(Abstract)：

以鄂尔多斯盆地陇东地区三叠统延长组长7段为例,应用铸体薄片、压汞毛管压力曲线、高分辨率场发射扫描电子显微镜、X-CT扫描技术等,分析致密油储层孔隙结构特征;对基于工区84组压汞及薄片鉴定数据,运用因子分析和k-均值聚类分析方法对孔隙结构进行分类.结果表明:长7段致密油储层主要储集空间类型包括溶蚀孔隙和原生剩余粒间孔隙,孔隙半径主要分布在5~30μm之间,吼道半径主要分布在0.5~2.0μm之间,孔隙结构表现为中—小孔、微—细喉型,分选较好,压汞曲线呈现略粗—细歪度;利用SPSS软件将陇东地区致密油储层孔隙结构划分为Ⅰ、Ⅱ、Ⅲ类,计算不同孔隙结构类型的参数分布特征,其中具有Ⅰ类孔隙结构特征的致密油储层为有利储层.该研究对后期致密油储层评价及勘探"甜点"优选具有参考意义.

关键词(KeyWords)：致密油储层;微观孔隙结构;孔隙结构分类;因子分析;k-均值聚类分析;三叠统;鄂尔多斯盆地

Abstract:

Keywords:

基金项目(Foundation):中国石油天然气股份有限公司重大科技专项(2011E-2602)

作者(Author):吴浩;郭英海;张春林;刘锐娥;

Email:

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