High-voltage pulse drilling operation state monitoring method based on voltage signal

A high-voltage pulse, operating state technology, applied in drilling equipment and methods, drilling equipment, drilling automatic control systems, etc., can solve the problem of obtaining better rock breaking effect, unable to adjust the high-voltage electric pulse drilling process, and unable to monitor in real time. High-voltage electric pulse crushing process operation status and other issues, to reduce the possibility of inaccurate critical pulse width, strong practical value, and the effect of good rock breaking effect

Pending Publication Date: 2022-03-11
HUAZHONG UNIV OF SCI & TECH
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  • Claims
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Problems solved by technology

[0003] Aiming at the defects and improvement needs of the prior art, the present invention provides a method and system for monitoring the operating state of high-voltage pulse

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  • High-voltage pulse drilling operation state monitoring method based on voltage signal
  • High-voltage pulse drilling operation state monitoring method based on voltage signal
  • High-voltage pulse drilling operation state monitoring method based on voltage signal

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0030] In the present invention, the terms "first", "second" and the like (if any) in the present invention and drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0031] First of all, it needs to be explained that, in terms of high-voltage electric pulse rock crushing technology, both the high-voltage electrode and the low-v...

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Abstract

The invention discloses a high-voltage pulse drilling operation state monitoring method based on a voltage signal, and belongs to the field of high-voltage pulse drilling. According to the invention, high-voltage pulse drilling operation state monitoring is realized by measuring the pulse width of the breakdown voltage in the high-voltage pulse drilling process; a judgment basis is given, the smaller value of the maximum voltage pulse width of breakdown in the rock and the minimum voltage pulse width of breakdown in liquid serves as the critical pulse width, if the actual voltage pulse width is smaller than the critical voltage pulse width, it is indicated that the high-voltage pulse drilling equipment breaks down in the rock, and otherwise, it is indicated that the high-voltage pulse drilling equipment breaks down in the rock. Therefore, the high-voltage pulse drilling equipment is punctured in the liquid. Thus, the working state of high-voltage electric pulse rock breaking can be obtained in real time, the high-voltage electric pulse drilling process can be adjusted in time, and the better rock breaking effect is achieved. And the implementation mode is simple, and the practical value is very high.

Description

technical field [0001] The invention belongs to the field of high-voltage pulse drilling, and more specifically relates to a method for monitoring the operating state of high-voltage pulse drilling based on voltage signals. Background technique [0002] Drilling technology is a key factor that affects the efficiency and cost of the entire extraction process. In order to solve the problems of low efficiency, serious drill bit wear and high cost in drilling deep wells with traditional rotary mechanical drilling methods, a high-voltage electric pulse rock crushing drilling technology has emerged. This technology forms a plasma channel inside the rock and finally breaks the rock. . Due to the inherent dispersion of the dielectric breakdown, the high-voltage electric pulse downhole fragmentation process may break down the liquid medium. At this time, the discharge efficiency is low, which is not conducive to the drilling process. However, at the bottom of the well, optical obse...

Claims

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Application Information

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IPC IPC(8): E21B44/00E21B7/00
CPCE21B44/00E21B7/00
Inventor 刘毅赵勇张赫刘鸿基林福昌谢敬瑶王天宇
Owner HUAZHONG UNIV OF SCI & TECH
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