In order to accurately evaluate the pore structure characteristics of reservoir in Block S of Ansai Oilfield,the distribution characteristics of pores and throats and the relationship between the charac-teristic parameters of pore throat radius ratio and porosity and permeability were studied by using constant-rate mercury injection experiment.The results show that the distribution range of pore radius of core samples with different permeability is basically the same,mainly ranging from 120 to 340 μm,the av-erage pore radius is 240 μm or so;The throat radius is mainly distributed Within 23 μm;The ratio of pore throat radius has a positive correlation with permeability,which is the main factor affecting the percolation capacity of reservoir in Block S.
维普
万方数据