Breakdown Pressure Prediction of Tight Sandstone Horizontal Wells Based on the Mechanism Model and Multiple Linear Regression Model

Accurately predicting the breakdown pressure in horizontal sections is essential when designing and optimizing fracturing jobs for wells tight gas reservoirs. Taking Sulige block Ordos Basin as an example, different completion methods combined with indoor rock experience data well data, a new method based on linear regression model proposed. Based Hossain stress field model, this paper established calculation of under by using experimental data. The average error between results actual at initiation point 3.67%. A Pearson correlation analysis was conducted eight sensitive factors stress, which showed that maximum principal minimum tensile strength, elastic modulus had strong correlations pressure. In study, multiple used to establish prediction conditions, optimized. verified relevant four wells. relative 4.33–6.30%, indicating obtained similar conditions. Thus, reasonable reliable.