Throttle valve response prediction method based on grey box model

The invention relates to a throttle valve response prediction method based on a grey box model, and belongs to the technical field of petroleum drilling well control. The invention discloses a throttle valve response prediction method based on a grey box model. The throttle valve response prediction method comprises the following steps: acquiring data; establishing a wellhead pressure prediction model; predicting a predicted pressure value which should be applied to the wellhead in the well killing process according to the wellhead pressure prediction model, and making the throttle valve respond according to a predicted response value; according to the throttle valve response error between the pump pressure after the throttle valve responds and the initial pump pressure, the predicted response value of the throttle valve is corrected according to the throttle valve response error, and a corrected response value is obtained; taking the wellhead pressure prediction model as a grey box model, and training and up