To a great extent, experiment selection of temporary plugging particles(TPP) in the temporary plugging techniques (TFT) is blind at present. Based on the investigation of particle migration, deposition and plugging mechanism in the porous media, network model, the inter-connected pore and throat network on the basis of reservoir pore structure, is applied to the optimization of TPP in the TPT. It is shown that the result of simulation has a good agreement with that of core flooding experiment and can be used to guide the study of core flooding experiments. The main advantages of this method are: 1. the model can be repeatedly used many times and can be used in the simulations of various purposes and aspects; 2. the results are highly comparable by the simulation while much less by the core flooding experiments.

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