Intelligent decision-making method and equipment for wellbore pressure control based on online monitoring and readable storage medium

The invention discloses a shaft pressure control intelligent decision-making method and device based on online monitoring and a readable storage medium, and belongs to the field of petroleum and natural gas exploration and development well drilling, and the method comprises the steps that the well drilling working condition is recognized according to real-time engineering well logging and pressure control data; establishing an annulus multiphase flow model, calculating wellbore pressure under the current drilling parameters, and reversely deducing a wellhead return pressure pre-control value required for balancing formation pressure; the method comprises the following steps: setting pressure control threshold values of different pressure control levels of pressure control drilling under different working conditions according to pressure control drilling operation specifications and industrial standards, correcting a wellhead return pressure pre-control value for different drilling working conditions to obtain