储层微观非均质性的分形特征研究  

RESEARCH ON THE FRACTAL CHARACTERISTICS OF RESERVOIR MICRO HETEROG ENEITY

作　　者：李云省[1] 邓鸿斌[2] 吕国祥[3] 

机构地区：[1]电子科技大学 [2]西南油气田分公司勘探研究院 [3]西南石油学院

出　　处：《天然气工业》2002年第1期37-40,共4页Natural Gas Industry

摘　　要：储层微观孔隙结构是影响储层储渗特性的重要因素。很多研究表明 ,储层微观孔隙结构具有分形特征。但是 ,由于储层微观孔隙结构不易用肉眼去分辨 ,所以使得储层微观非均质性研究一直难以深入进行下去。文章将PIA技术与分形理论相结合 ,在“计盒法”的基础上推导出了一种新的分形分析方法。该方法简单易行 ,且不受人为因素影响。利用该方法 ,对某油田三口井共 16个砂岩薄片和 2个碳酸岩盐薄片进行了分析 ,结果发现该方法较传统非均质性分析方法更能准确地表征储层微观孔隙结构的非均质程度。Reservoir micro pore structure is an i mportant factor influencing reservoir porosity and permeability.In light of many studies it is shown that the reservoir micro pore structure is possessed of fra ctal characteristics.Because such a micro structure can't be identified easily w ith naked syes,a thorough research on reservoir micro heterogeneity is always di fficult to carry out.Combined the PIA technique with fractal theory,a new fracta l analysis method was obtained on the basis of the 'Box Counthing'method.New m ethod is very simple,easy and not affected by artificial factors.16 sandstone an d 2 carbonate rock thin sections collected from three wells in a certain oil fie ld were analyzed by use of the new method.The analyzed results show that this me thod is superior to the traditional ones in characterizing the reservoir micro p ore structure heterogeneity.

关 键 词：石油地质 储集层 微观结构 非均质 岩石孔隙 分形学 图像分析 特征 

分 类 号：TE312[石油与天然气工程—油气田开发工程]