Electrical heat energy-mechanical energy comprehensive rock breaking drill

Abstract

The invention relates to an electrical heat energy-mechanical energy comprehensive rock breaking drill. The electrical heat energy-mechanical energy comprehensive rock breaking drill comprises a threaded connector, a cable, an outer shell, a heat exchange pipe, an electric heating device and a heat conduction element; the lower end of the threaded connector is connected with the outer shell, a center hole is formed inside the threaded connector, the interior of the outer shell is provided with an annular groove, the heat exchange pipe and a spraying nozzle, the center hole, the heat exchange pipe and the spraying nozzle are sequentially communicated, an outlet of the spraying nozzle is formed in the bottom face of the outer shell, the electric heating device and the heat conduction element are arranged in the annular groove, the heat conduction element is in contact with the electric heating device and the outer shell, the cable is connected with the electric heating device, and cutting teeth are arranged at the lower end of the outer shell. According to the electrical heat energy-mechanical energy comprehensive rock breaking drill, air flow is heated through electric heating energy so as to be blown to rock, the mechanical energy is used in a matched mode to achieve rock breaking, so that the energy consumption is small, the cost is low, the safety factors are high, the working efficiency is high, and the well drilling depth is large.

Description

technical field [0001] The invention relates to a rock-breaking drill bit integrated with electric heat energy and mechanical energy, which is suitable for projects such as oil and gas, prospecting, building foundation construction and the like. Background technique [0002] Rock crushing is the process of separating rock from a rock mass. Research on rock crushing methods and technologies is a long-term concern in mining, civil engineering, transportation, military and other industries. With the development of modern science and technology, some new development trends have emerged in the methods and technologies of rock crushing. According to literature research, rock breaking methods can be divided into two types: mechanical energy rock breaking and thermal rock breaking. Among them, mechanical energy rock breaking mainly includes mechanical drilling, conventional blasting method, projectile impact method, hydroelectric effect method, spark discharge method, and blasting ...

AI Technical Summary

Problems solved by technology

[0004] At present, there are few conventional methods of combining mechanical energy and thermal energy for rock breaking. In the method of combining mechanical energy and thermal energy for rock breaking, the thermal energy is generated through fuel combustion. This method of generating thermal energy consumes a lot of energy and energy conversion. The efficiency is not high, and the safety factor is low; if the mechanical energy and electric heat energy are organically combined, the high-temperature hot air flow formed after the air passes through the high-temperature electric heater will significantly reduce the strength of the rock under the drill bit, and even a rockburst will occur, and then through the rotating The cutting teeth destroy rocks with low strength, quickly form a wellbore, solve the problems of slow drilling speed in deep wells and hard formations, unstable thermal energy, and insufficient safety, and provide an effective method for drilling hard formations and complex formations

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