The invention provides a vertical drilling process deviation correction control method based on an automatic guiding drilling tool. The vertical drilling process deviation correction control method includes the following steps that first, a two-dimensional model and a three-dimensional model of the drilling tool movement are established; then, linearizing and discretizing of the models are conducted, and a deviation correction controller is designed; the hole deviation angle deviation amount, the
azimuth deviation amount, the closure distance deviation amount, a reference drilling tool facingangle and the reference guiding rate are input to the deviation correction controller; a
servo drive module drives a bit to
drill vertically; an initial hole deviation angle,
azimuth angle, and closure distance are calculated; a final hole deviation angle,
azimuth angle, and closure distance are calculated; the deviation amount of the hole deviation angle, the azimuth angle, and the closure distance is calculated; and the deviation amount is fed back to the deviation correction controller to form closed-
loop control. According to the technical scheme, the vertical drilling process deviation correction control method has the beneficial effects that in the case of lack of an existing vertical drilling deviation correction control concept, two-dimensional and three-
dimensional modeling of thedrilling tool movement is carried out, the deviation correction controller is designed, and the vertical accuracy of a vertical drilling trajectory and
engineering applicability of a deviation correction
control system can be improved.