Study on kinematics model of medium pressure piezoresistive liquid column for high energy gas fracturing

Based on the un-quantification of the piezoresistive liquid column movement in the process of HEGF, the analytical model of the law of movement before and after the stress wave spreading to the liquid column surface was established separately by analyzing the physical process of high energy gas acting on the liquid column. Both the macroscopic effect of deflagration stress to liquid column and the microscopic shock compress effect of stress wave to the liquid column are considered in the analytical model. And using the model the law of liquid column movement with different height and different property in various loading rates can be quantitative calculated simply. The study efforts present an important assisting value to the accuracy and success proportion of the HEGF design.