海拉尔油田砂砾岩储集层孔隙结构特征分析

Pore structure characteristics analysis of glutenite reservoir in Hailaer oilfield

基于岩心物性和压汞曲线等实验资料,研究了海拉尔油田砂砾岩储集层的孔隙结构特征。研究表明:砂砾岩储集层物性差异大,孔渗相关性差;孔喉半径分布以双峰态为主;渗透率与平均孔隙半径具有较好的幂函数关系,渗透率的对数与分选系数、特征结构参数的对数具有较好的线性关系;排驱压力与渗透率具有双对数线性关系,与分选系数具有线性关系;退汞效率与渗透率具有幂函数关系,与分选系数具有线性关系。

Based on the experimental data of core properties and mercury curve,the pore structure study of glutenite reservoirs in Hailar oilfield has been carried out.The results indicate the glutenite reservoir properties vary greatly and the correlation between porosity and permeability is poor.The pore throat radius distribution is bimodal based;the permeability and average pore radius has a better power function.The logarithmic and sorting permeability logarithmic factor characteristic structural parameters are of good linear relationship,the displacement pressure and permeability has a double logarithmic linear relationship,a linear relationship with the sorting coefficient.The retreat mercury efficiency and permeability has power function,and a linear relationship with the sorting coefficients.