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Method for Low Loss of Plasma Rock Drill Bit Electrode

A plasma, low-loss technology, applied in drilling equipment and methods, electrical components, earthwork drilling and mining, etc., can solve problems such as constraints, achieve the effect of reducing electrode loss, reducing electrode replacement time, and intensive electrode structure design

Active Publication Date: 2022-06-24
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plasma rock-breaking drill bit is the core equipment of this technology. However, since the cathode and anode of the drill bit work in a hot plasma environment, the problem of electrode loss has always restricted the further application of this technology. Therefore, it is particularly important to develop a method to reduce electrode loss.

Method used

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  • Method for Low Loss of Plasma Rock Drill Bit Electrode
  • Method for Low Loss of Plasma Rock Drill Bit Electrode
  • Method for Low Loss of Plasma Rock Drill Bit Electrode

Examples

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Embodiment Construction

[0008] like figure 1 As shown in the figure, the low-loss method of the plasma rock-breaking bit electrode is realized by the electrode forced water cooling system 101, the current waveform control system 102, and the voltage real-time monitoring circuit 103. The electrode forced water cooling system 101 includes a hollow inner cone cathode 104, a double Head screw anode 105 , cooling water temperature monitoring system 106 ; current waveform regulation system 102 includes DC constant current circuit 107 , pulsating DC circuit 108 ; voltage real-time monitoring circuit 103 includes alarm circuit 109 and action circuit 110 .

[0009] The structure of the hollow inner cone cathode 104 is as follows figure 2 As shown in the figure, its interior is a hollow structure, and the front end of the inner hole has a cone that protrudes inward; , the cooling water flows into the hollow inner cone cathode 104 from the cooling water inlet pipe 201, and flows along the inner surface of the...

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Abstract

The invention belongs to the field of petroleum engineering, and in particular relates to a method for reducing loss of an electrode of a plasma rock-breaking drill bit. The low-loss method of the plasma rock-breaking drill bit electrode is realized by the cooperation of the electrode forced water cooling system, the current waveform control system, and the voltage real-time monitoring circuit; the electrode forced water cooling system includes a hollow inner cone cathode, a double-ended spiral anode, and a cooling water temperature monitoring system. ; The current waveform control system includes a DC constant current circuit and a pulsating DC circuit; the voltage real-time monitoring circuit includes an alarm circuit and an action circuit. The method can effectively reduce the electrode loss of the plasma rock-breaking drill bit, the electrode structure is designed intensively, the time for electrode replacement is reduced, and the rock-breaking efficiency is improved.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to a low-loss method for a plasma rock-breaking drill bit electrode. Background technique [0002] Plasma drilling technology is an emerging high-efficiency drilling technology, which is different from conventional rotary mechanical drilling methods. This technology uses high-temperature and high-energy plasma to break up rocks to achieve drilling. Plasma rock-breaking bits are the core equipment of this technology. However, since the cathode and anode of the drill bit work in a hot plasma environment, the problem of electrode loss has always restricted the further application of this technology. Therefore, it is particularly important to develop a method to reduce electrode loss. . SUMMARY OF THE INVENTION [0003] In order to overcome the deficiencies of the prior art, the present invention provides a low-loss method for a plasma rock-breaking drill bit electrod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/00H05K7/20
CPCE21B7/00H05K7/20281
Inventor 刘永红孙强韩延聪朱业俊刘鹏沈志萍马驰赵莅龙
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)