High-voltage pulse drill bit and rock breaking experimental facility

A high-voltage electric pulse and drill bit technology, which is applied in the field of rock engineering, can solve the problems of high drilling cost, low drilling efficiency, and large drill bit wear, and achieve the effects of low drill bit wear, low noise and vibration levels, and high well wall quality.
CN111119739APending Publication Date: 2020-05-08CHINA UNIV OF GEOSCIENCES (WUHAN)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (WUHAN)
Publication Date
2020-05-08

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Abstract

The invention provides a high-voltage pulse drill bit and a rock breaking experimental facility. The high-voltage pulse drill bit is located over a rock and comprises a plurality of negative electrodes, a negative electrode fixing sleeve for fixing the negative electrodes, a positive electrode, an insulating sleeve, a spring, an insulating handle and a cable. The positive electrode is divided intoa positive electrode upper half portion and a positive electrode lower half portion which are in threaded connection with each other. The rock breaking experimental facility comprises a servo electric cylinder, a control assembly, the high-voltage pulse drill bit, a high-voltage pulse power source, a material container assembly, an aluminum profile support and an aluminum base and is used for breaking the rock. The high-voltage pulse drill bit and the rock breaking experimental facility have the advantages that the rock breaking drilling efficiency is high, and the quality of the wall of a well is high; as for an irregular rock, the contact between the electrode and the rock is closer through adjustment of extending and retracting of the positive electrode, and thus the rock is broken more effectively; and the noise and vibration are reduced, the abrasion to the drill bit is small, and the energy consumption is small.
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Description

technical field

[0001] The invention relates to the field of rock engineering, in particular to a high-voltage electric pulse drill bit and a rock-breaking experimental device. Background technique

[0002] The 21st century is the century of the development and utilization of underground space. The revolution of underground space has become a frontier international strategic proposition. It has become the national strategy of all countries in the world to seek underground space and resources. The construction of super underground projects is inseparable from super equipment and needs to rely on High-quality development of equipment manufacturing industry. The International Energy Agency predicts that in 2030, nearly 50% of the production of crude oil and natural gas will be produced by deep wells, ultra-deep wells, new fields such as deep sea and polar regions, and unconventional wells such as oil sands. The drilling depth of exploration and development of oil, natural gas,...

Claims

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