Physical Simulation of Water Flooding in Plate Model Similar Theory Study

In order to give clear feasibility measures in laboratory physical simulation,a different method with the previous derivation-improved inspectional analysis is used,deduced the similarity criterion of water flooding in the ultra-low permeability reservoir and provide a simulation scheme which could simulate the real reservoir to the greatest extent in current laboratory conditions for the purpose of recreating oil field production process,predict the remaining oil saturation distribution.Through the selection of the corresponding outcrop rock with the actual reservoir the simulation scheme can realize the similarity of two phase flow characteristics,capillary force characteristics and nonlinear seepage characteristics in between the model and the reservoir prototype,which could make physical simulation experiment reflect the reservoir fluid seepage characteristics to the greatest extent.For the condition of hydraulic fracture cannot satisfy the geometric similar rule,an equivalent method is presented for the physical simulation to realize it.According to the similarity criterions derived the conversion relationships of the model parameters and reservoir parameters are determined.The conclusions could be the theoretical guidance for the physical simulation of water flooding in the ultra-low permeability reservoirs.