An armored cable electromagnetic percussion rotary drilling tool for bedrock under polar ice

Abstract

The invention discloses an armored cable type electromagnetic impact rotary drilling tool for polar subglacial bedrock, which includes a cuttings chamber, a water pump, a driving motor, an electromagnetic impact system, an outer pipe of the drilling tool and a drill bit, wherein the cuttings chamber is assembled on On the upper part of the water pump, the liquid outlet of the cuttings chamber is set corresponding to the liquid inlet of the water pump. The driving motor is arranged at the lower part of the water pump. The bottom is connected with the electromagnetic impact system, and the electromagnetic impact system is driven by the hollow shaft to work. Both the hollow shaft and the electromagnetic impact system are assembled in the inner cavity of the outer tube of the drilling tool, and the hollow shaft and the outer tube of the drilling tool are connected through a reducer , the bottom of the outer tube of the drilling tool is connected to the drill bit, beneficial effects: the electromagnetic impact system is added, which effectively makes up for the shortcomings of the traditional armored cable-type electric mechanical drilling tool that cannot drill into the rock formation due to insufficient drilling pressure and torque, and reduces the risk of broken rock difficulty.

Description

technical field [0001] The invention relates to an electromagnetic percussion rotary drilling tool, in particular to an armored cable type electromagnetic percussion rotary drilling tool for bedrock under polar ice. Background technique [0002] At present, bedrock samples under the Antarctic ice are of great significance to the study of the geological structure, glacier dynamics and climate change of the Antarctic continent. Obtaining bedrock samples under the ice by drilling technology is a necessary means for the above research. However, affected by the harsh climate and surface environment in the polar regions, it is difficult to drill in the polar regions. The existing armored cable electromechanical drilling tools are mainly used for drilling in ice layers. They are light in weight and low in power. Providing sufficient WOB and torque will lead to low drilling efficiency and high risk of complex accidents such as drill sticking, and it is difficult to obtain good quali...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of difficult footage and low efficiency caused by low drilling pressure and small torque when the armored cable-type electromechanical drilling tool drills into the sub-ice bedrock formation, and provides a polar sub-ice base drilling tool. Armored cable type electromagnetic impact rotary drilling tool for rock

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