东北石油大学学报2013，Vol.37Issue(1)：1-7,7.DOI:10.3969/j.issn.2095-4107.2013.01.001
低渗透碎屑岩储层孔隙结构分形维数计算方法——以川中地区须家河组储层41块岩样为例
Method for calculating the fractal dimension of the pore structure of low permeability reservoirs: A case study on the Xujiahe formation reservoir in central Sichuan
摘要
Abstract
In order to find out whether the method based on water or the one based on mercury saturation is better for calculating the fractal dimension of the pore structure of low permeability reservoirs, this paper takes the 41 core plunger sample of Upper Triassic Xujiahe Formation reservoir as an example to calculate the fractal dimension of the pore structure by two methods separately. The results show that the fractal dimension calculated by mercury saturation corresponds with the displacement pressure, sorting coefficient and other pore structure parameters well, the displacement pressure increases while the sorting coefficient decreases with the increase of fractal dimension. So the fractal dimension calculated by this method can quantitatively describe the parameters and the complexity of reservoir pore structure. While on the other hand, the fractal dimension calculated by water saturation corresponds with the displacement pressure, with poor sorting of coefficient and other pore structure parameters, to analyze this phenomenon. It is hoped that the mercury injection data obtained by conventional mercury injection techniques can be used to calculate the fractal dimension of reservoir pore structure if possible.关键词
孔隙结构/分形维数/分形特征/低渗透碎屑岩/压汞曲线/非均质性Key words
pore structure/ fractal dimension/ fractal characteristics/ low permeability reservoirs/ mercury injection curve/ heterogeneity分类
能源科技引用本文复制引用
赖锦,王贵文,郑懿琼,李维岭,蔡超..低渗透碎屑岩储层孔隙结构分形维数计算方法——以川中地区须家河组储层41块岩样为例[J].东北石油大学学报,2013,37(1):1-7,7.基金项目
国家大型油气田及煤层气开发科技重大专项(2011ZX05020-008) （2011ZX05020-008）
