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利用岩心常规物性分析和压汞分析数据研究了四川盆地上三叠统须家河组致密储集层的微观特征,并找到了它在世界储集层“连续谱”中的位置。采用统计学方法,根据渗透率和孔喉半径划分致密储集层级别,分析每个级别储集层各项参数的数值分布范围。探索孔喉与孔隙度和渗透率之间的内在联系,得到三者之间的拟合公式。利用该公式,将常规物性数据换算成孔喉值,进而推断储集层所属级别并获得其他重要的储集层参数。
The microscopic characteristics of the tight reservoirs of the Upper Triassic Xujiahe Formation in the Sichuan Basin were studied by using the core physical property analysis and the mercury intrusion analysis data, and its location in the world “continuum ” was found. Using statistical methods, the density of tight reservoirs was divided according to permeability and pore throat radius, and the numerical distribution of each parameter of reservoir was analyzed. Explore the pore throat and porosity and permeability of the intrinsic link between the three to get the fitting formula. Using this formula, the conventional physical data is converted into pore throat values, which in turn deduces the reservoir belonging level and obtains other important reservoir parameters.