The invention provides a hollow screw
drill which is provided with a through mounting channel, the mounting channel is used for allowing a screen
pipe to penetrate through, and the hollow screw
drill comprises a
drill bit and a screw rod, the screw motor is provided with a rotor
pipe and a
stator pipe, the
stator pipe is arranged on the outer side of the rotor pipe in a sleeving mode, an inner cavity of the rotor pipe is located on the mounting channel, a gas channel is formed between the
stator pipe and the rotor pipe, a threaded structure is arranged on the outer wall of the stator pipe, the screw motor is provided with an input end and a connecting end which are oppositely arranged, and the connecting end is in driving connection with the
drill bit. The gas channel is connected with gas conveying equipment through an input end; the end cover is arranged at a port, close to one side of the input end, of the rotor pipe, the end cover is provided with a plugging plate, the plugging plate has a plugging state and a crushing state which are oppositely arranged, and when the plugging plate is in the crushing state, the screen pipe can enter an inner cavity of the rotor pipe. By means of the technical scheme, the problem that in the prior art, after a
directional drilling tool is lifted out, drilling holes are prone to being blocked, and the whole-hole-section screen pipe cannot be efficiently put down can be solved.