《Table 1.Ionic composition of water used in the experiment.》

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《Comparison of oil displacement mechanisms and performances between continuous and dispersed phase flooding agents》

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The dispersed phase flooding agent（SMG （W）-micron，SMG（Y）-submillimeter） was provided by the Oilfield Chemistry Institute of Petro China Research Institute of Petroleum Exploration&Development.Its effective content is 100%.The continuous phase flooding agent（polymer solution）was partially hydrolyzed polyacrylamide（HPAM）powder with a relative molecular mass of 2 500×104 and solid content of90%.The dyeing agent was sodium fluorescein produced by Tianjin Damao chemical reagent factory.The simulated oil was prepared by mixing kerosene and degassed crude oil from No.1 Production Plant of Daqing Oilfield，with a viscosity of9.8 mPa?s at 45?C.Water in the experiment was also from Daqing Oilfield，with ionic composition shown in Table 1.