利用分形维数研究储层的孔隙结构特征  

The fractal dimension study on pore structure of reservoir

作　　者：李彦婧[1] 高潮[2] 梁利平[1,3] 赵雪娇[1] 

机构地区：[1]西北大学地质学系/大陆动力学国家重点实验室,陕西西安710069 [2]延长石油(集团)有限责任公司研究院,陕西西安710069 [3]长庆油田输油处,陕西西安710083

出　　处：《石油化工应用》2011年第11期9-11,共3页Petrochemical Industry Application

摘　　要：以分形理论为基础,结合压汞测试资料,计算了鄂尔多斯盆地东-韩地区延长组长2段储层孔隙结构的分形维数。结果表明,储层孔隙空间存在单一分形和多重分形的现象,中孔隙的分形维数大于小孔隙的分形维数,中孔隙的均匀程度差于小孔隙。分形维数与孔隙结构参数呈微弱的正相关性,分形维数越大,孔隙分布的非均质性越强。On the basis of fractal theory and mercury data, the fractal dimension of pore structure of Chang 2 division is calculated in Dong-Han area,Ordos Basin. The results show that pore structure has single fractal and multi-fractal features. Fractal dimensions of media pore are greater than them of micro-pore, which have better uniformity. There is a weak positive correlation between fractal dimension and pore structure parameters .The greater the fractal dimension is, the stronger the homogeneity of pore distribution is.

关 键 词：毛管压力曲线 分形维数 孔隙结构 低渗透储层 

分 类 号：P618.13[天文地球—矿床学]