Plasma channel and mechanical drilling tool combined device and well drilling method thereof

Abstract

The invention relates to a plasma channel and mechanical drilling tool combined device and a well drilling method thereof. An inner cavity of a double-inner-chamber connecting rod of the device basedon combination of the plasma channel and the mechanical drilling tool is partitioned into a closed electric chamber and a well drilling fluid channel. An electric sensing device is mounted in the electric chamber. The upper end of the double-inner-chamber connecting rod is sequentially connected with a drilling rod and a rotating disc. An electric cable channel is formed in the inner wall of the drilling rod. An electric cable penetrates through the electric cable channel to be connected with a direct-current power supply in the electric chamber. The lower end of the double-inner-chamber connecting rod is sequentially connected with a pressure telescopic rod and a drill bit. A pressure sensing device is mounted on the pressure telescopic rod and connected with the electric sensing device.A partition plate is arranged in a central water hole of the drill bit. A partition-type water hole is formed in one side of the partition plate. A grounding electrode and a high-voltage electrode aremounted on the other side of the partition plate and exposed. The lower end of an electrode connecting device in the electric chamber is in the drill bit and is connected with the grounding electrodeand the high-voltage electrode. According to the plasma channel and mechanical drilling tool combined device and the well drilling method thereof, simultaneous working of the drill bit, the high-voltage electrode and the grounding electrode is achieved.

Description

Technical field: [0001] The invention relates to the field of drilling engineering, in particular to a combination device based on a plasma channel and a mechanical drilling tool and a drilling method thereof. Background technique: [0002] Plasma is called the fourth form of material existence. It is a conductive fluid composed of electrons, ions, free radicals and neutral particles. Plasma channel drilling is generated by DC power supply, capacitors, resistors, inductors and electrodes. Using plasma to break rocks is an imperfect technology and consumes a lot of energy. However, if plasma channel drilling and mechanical drill bits are combined to form a new drilling method, energy consumption can be reduced, and the drilling speed of traditional drilling can be improved. Therefore, in view of the above problems, designing a plasma channel drilling method and drill bit will Obviously necessary. Invention content: [0003] An object of the present invention is to provide...

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Problems solved by technology

[0003] An object of the present invention is to provide a combination device based on plasma channel and mechanical drilling tool, which is used to solve the problem that plasma channel drilling or mechanical drill bit drilling only work in a single way in the prior art, Another object of the present invention is to provide this drilling method based on the combination of plasma channels and mechanical drilling tools

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