Flexible staged fracturing device for ultra-short radius horizontal well

The invention belongs to the technical field of oil field machinery, and discloses a flexible staged fracturing device for an ultra-short radius horizontal well. Comprising an oil pipe, a safety connector, a hydraulic anchor, a check valve, a guiding shoe, an open hole packer, a hydraulic sand blower and a constant-pressure sliding sleeve, and the open hole packer, the hydraulic sand blower and the constant-pressure sliding sleeve of the flexible staged fracturing device for the ultra-short radius horizontal well are correspondingly provided with a packer flexible joint, a hydraulic sand blower flexible joint and a constant-pressure sliding sleeve flexible joint. The movable flexibility of the open hole packer, the hydraulic sand blaster and the constant-pressure sliding sleeve is increased, compared with traditional rigid connection, the self-adaptive hydraulic sand blaster can adapt to the change of a well track, the tripping-in requirement of a well section with the curvature radius smaller than 4 m is met