Self-injection underwater perforating twist-sucking drilling machine

Abstract

A self penetrating underwater drilling and sucking machine comprises a jet bit (1), a low voltage cut-off valve (2), a overflowing swivel head (3), a hydraulic motor (4), a suction hood(5) (6), a pneumatic lift pump (7), a sliding sleigh (8), a slurry output hose (12), a hydraulic pipe (13) and a high pressure air pipe (16). The overflowing rotating head (3) that is short and consistent in length will be replaced by the traditional drill rod string that extends when it drills deeper and deeper. Self-penetration of the drill can be realized relying on the pressure gap inside and outside caused in the slurry releasing process by the sucking hood conical surface. A slurry releasing hose (12) connected to the pneumatic lifting pump on the driller, leads to the operating boat on the water. The waterborne operating boat controls the driller through a hydraulic pipe (13) and a high pressure air pipe. The perpendicularity of the drilling hole and stability of the aperture are ensured of with the sliding sleigh (8) and the protective wall structure (15) respectively. The inventions excels itself with its small size and light weight of the driller, feasibility of operating on the sea, effective in cost reduction and it successfully avoids the traditional driller's dependency on some big scale drilling ship.

Description

Technical field [0001] The invention belongs to the innovation of an underwater drilling tool. Background technique [0002] The traditional underwater drilling machine is an underwater drilling rig, which consists of a drill bit, a drill pipe, a turntable and an electric motor from bottom to top. The electric motor and the turntable are placed on the drill floor above the water surface; the drill pipe and the drill bit connected with the turntable extend into the underwater drilling hole. When performing underwater drilling, the electric motor is turned on to drive the turntable to rotate, and the torque is applied to the drill pipe and transmitted to the drill bit. The drill pipe is a hollow steel pipe, through which the mud is passed through to the outlet of the drill bit, and returns to the surface of the water from the outside of the drill pipe along the hole wall to form a circulation system. The hollow drill pipe is lengthened in sections with the deepening of the d...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the traditional underwater drilling equipment depends on the drilling ship and the cost is too high, the present invention proposes a self-penetrating underwater drilling drill

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