??????????????????????о?

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。

Research on the Fractal Chracteristics of Reservoir Micro Heterogeneity

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.