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

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...

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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 drilling based on voltage signals. The technical problem that the high-voltage electric pulse drilling process cannot be adjusted in time to obtain better rock breaking effect

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