Pipe column string

The utility model discloses a pipe column string. The pipe column string at least comprises a coiled tubing connector, a manipulator, a centralizer, a collar locator, a sand blasting perforation sliding sleeve, a hydraulic setting tool and a bridge plug which are connected in series; the sand blasting perforation sliding sleeve, the hydraulic setting tool and the bridge plug are successively connected in series from one end of the coiled tubing connector of the pipe column string to the other end; and the coiled tubing connector is used for connecting the coiled tubing. The pipe column string is capable of finishing the whole operation of bridge plug tripping and bridge plug setting by using the bridge plug equipment, so little devices, little working procedures and few labors are used in the construction. The fire work apparatuses are avoided to be used, the safety performance is high, and the adaptability for the well conditions is strong, so the all-pass diameter after drilling the bridge plug is capable of achieving the large discharge capacity staged fracturing of the casing pipe horizontal well.