SU136692A1 - Well drilling device - Google Patents

Description

The proposed well drilling device allows for an increase in the POWER applied to the face for the destruction of rocks, which increases the rate of penetration in hard rocks.

FIG. Figure 1 shows a variant of the proposed device in which a percussion mechanism is associated with a chisel bit; in fig. 2 is a second variant of the device in which the impact mechanism is not associated with the chisel bit.

Sub / is designed to connect the housing 2 of the device with an electric motor or bar. In the upper part of the device, valve box 5 with valve 4 and cover 5 are placed. Piston 6 is connected to the shank 7 of the chisel bit using a nut 8 and a cone joint 5. Exhaust air from the W channels is discharged to the bottom through four holes //. Removable paws J2, nesushie cone 13, have a joint with the body and the lock ts bolts 14.

A chisel chisel 75 strikes a face and destroys it together with cones.

In the second embodiment, the piston 6 is not connected to the shank 7, and the chisel chisel 15 is constantly in contact with the face.

The increased penetration rate of the proposed devices is achieved by the combined action of the roller cone and chisel bits.

Subject invention

A device for drilling wells, characterized in that, in order to increase the bottomhole power and penetration speed in strong rocks, the rotating electric drill is combined with an air hammer in a single drilling tool, in which a shaped chisel bit performs quick-impact drilling directly at the bottom hole, which is processed by the rolling chisel bit with roller cones, with air blow from the air hammer.