Electric pulse drill bit

Abstract

The invention discloses an electric pulse drill bit comprising a high voltage electrode, a low voltage electrode, a connecting rod, a sleeve and an isolating casing pipe; the high voltage electrode and the low voltage electrode are connected with an electric pulse generator separately, and the connecting rod is used for arranging the high voltage electrode; the high voltage electrode is detachablyconnected with the connecting rod through an electrode connection, thereby facilitating replacement of different high voltage electrodes; the sleeve is used for arranging the low voltage electrode, and the low voltage electrode is detachably arranged on the sleeve, thereby facilitating replacement of different low voltage electrodes; and the isolating casing pipe is arranged between the connecting rod and the sleeve, and used for isolating the high voltage electrode and the low voltage electrode. According to the electric pulse drill bit, rocks are crushed through shock waves and jet flow generated by pulse discharge of the high voltage electrode and the low voltage electrode, and the mechanical effect of a plasma channel, and the drill bit does not need to be rotated, and is not liable to wear; the rocks are crushed by using the energy of the pulse discharge, and the influence of the rock hardness and other external factors is less; and the construction efficiency is high. Differenthigh voltage electrodes and low voltage electrodes can be replaced, so that the electric pulse drill bit adapts to different rock-drilling and drilling requirements.

Description

technical field [0001] The invention relates to the technical field of rock breaking and drilling devices, and more specifically relates to an electric pulse drill bit. Background technique [0002] The commonly used rock breaking method in the prior art is the mechanical rotation rock breaking method, that is, by driving the drill bit to rotate mechanically, the drill bit contacts the rock, and the cutting force when the drill bit rotates achieves the purpose of rock breaking and drilling. [0003] However, with the deepening of the depth and breadth of human resource exploitation, the geological conditions for rock breaking have become increasingly complex. For example, in the future acquisition of crude oil, natural gas and geothermal energy, it is necessary to drill unconventional wells such as deep wells or ultra-deep wells. The difficulty of rock breaking gradually increases. In the process of rock-breaking drilling, the driving efficiency of mechanical rock-breaking w...

AI Technical Summary

Problems solved by technology

[0003] However, with the deepening of the depth and breadth of human resource exploitation, the geological conditions for rock breaking have become increasingly complex. For example, in the future acquisition of crude oil, natural gas and geothermal energy, it is necessary to drill unconventional wells such as deep wells or ultra-deep wells. The difficulty of rock breaking gradually increases. In the process of rock-breaking drilling, the driving efficiency of mechanical rock-breaking work is often affected by external factors such as rock hardness. Especially under extreme conditions, not only the driving speed is extremely slow, but also The damage probability of the mechanical drill bit is also greatly increased, and the drill bit needs to be replaced frequently, which not only further affects the construction progress, but also increases the construction cost

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