Drill column passive heave compensation drilling system

The invention relates to the field of marine floating platform heave compensation devices, and particularly discloses a drill string passive heave compensation drilling system which comprises a sensing unit, the sensing unit comprises a speed sensor, a tension sensor and a control unit, the control unit comprises a main controller and an upper computer, and the speed sensor and the tension sensor are both electrically connected with the main controller; the seabed base plate is used for guiding the drilling tool; the power lifting compensation unit comprises a lifting winch, a base plate winch and a compensation device; the floating hoisting system has the beneficial effects that the compensation device is arranged to carry out heave compensation on the floating hoisting system, the lifting winch is arranged to carry out heave compensation on a drill column in the floating hoisting system, the base plate winch is arranged to carry out heave compensation on a seabed suction cup, and the three parts are matched