Horizontal well fracturing staged clustering method and device based on mechanical specific energy

The invention provides a horizontal well fracturing staged clustering method and device based on mechanical specific energy. The method comprises the steps that an engineering dessert model of a target well section is established according to the mechanical specific energy, the brittleness index, the fracture toughness index and the horizontal principal stress difference of the target well section; solving the engineering dessert model by using a clustering method so as to segment the target well section; in the segmentation result, a European closeness method is used, and clustering is preferably selected in each segment. According to the method, on the basis of the corrected mechanical specific energy, the risk of forming invalid and low-efficiency cracks can be reduced, accurate guidance can be provided for setting of the horizontal well segmented and clustered fracturing perforation positions, practice proves that the perforation positions are adjusted by referring to the mechanical specific energy, so th