《Table 1.Basic physical parameters of the cores.》

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《Stress sensitivity of tight reservoirs during pressure loading and unloading process》

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In this experiment，the artificial homogeneous tight cores were prepared by epoxy resin pressing cementation[17]，and in the process of core preparation，quartz sands with particle size intervals of 0.1-0.15 mm and 0.15-0.2 mm were used.The cores were cured at 21?C for 6.5 h.By conducting flooding and stress sensitivity experiments，the prepared cores were proved to be similar with natural cores in porosity，permeability，displacement effect and mechanical properties.Six artificial homogeneous tight cores were selected for experiment and the basic physical parameters of them are shown in Table 1.