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Microwave-assisted supercritical carbon dioxide jet drilling device and method

A carbon dioxide and microwave-assisted technology, which is applied in the direction of liquid/gas jet drilling, drill bits, drill pipes, etc., can solve the problems of low drilling efficiency and tool wear, so as to improve the rock breaking efficiency, solve the wear problem, and the rock breaking range big effect

Pending Publication Date: 2021-05-14
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of serious wear and low drilling efficiency of ordinary mechanical drilling tools when drilling in hard rock, and to provide a microwave-assisted supercritical carbon dioxide jet drilling device and method

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  • Microwave-assisted supercritical carbon dioxide jet drilling device and method
  • Microwave-assisted supercritical carbon dioxide jet drilling device and method
  • Microwave-assisted supercritical carbon dioxide jet drilling device and method

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Embodiment Construction

[0026]The technical solutions of the present invention will be further described below with reference to the accompanying drawings.

[0027]SeeFigure 1-10A drill into a microwave assistant supercritical carbon dioxide jet, which mainly includes a drill bit (6), a drill pipe (1) and an external generating device and a drilling power set. The drill bit mainly includes a high power microwave occurrence system (4), a rotary slip ring brush (3), a microwave catheter (5), a high-voltage direct flow nozzle (6-3), a high pressure rotary radial nozzle (6-2), the cleaning device water flow Channel (4-7), Temperature Sensor (6-4), inner trace micro motor support rod (6-5), microwave feed port (6-6), etc .; external devices mainly include: pressure gauge (19), Pressure buffer (18), high pressure pump (16), pressure pipe (17), liquid carbon dioxide storage tank (15), high pressure refrigeration tank (13), impurity separation device (12), heat resistant water pipe (22) , High pressure water pump (23...

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Abstract

The invention relates to a microwave-assisted supercritical carbon dioxide jet drilling device and method. The problems that a drill bit is seriously abraded, the drill bit is frequently taken off and replaced, and the drilling aging is seriously affected in a traditional mechanical rock breaking method are solved. The drilling efficiency is improved through the process that two kinds of input energy of microwave irradiation and supercritical carbon dioxide jet are organically matched. The drilling device has the mode that rotary jet and direct jet alternately act to carry out erosion damage on rock. A jet fluid nozzle controls the jet speed through a ball valve, and the drilling efficiency is improved. The strength of the rock is effectively reduced through the permeation effect of supercritical carbon dioxide and the expansion effect of the supercritical carbon dioxide under microwave irradiation. Compared with a conventional drilling device, the drilling capacity of the device for rock masses with different strengths can be greatly improved, and the drilling efficiency is greatly improved.

Description

Technical field[0001]The present invention relates to the field of rock drilling, and in particular, a drilling apparatus and method for microwave assist supercritical carbon dioxide jets.Background technique[0002]The crushing method and technical research of hard rocks has been a long-term concern for mining, civil, military and other industries. For non-coal mines of hard rocks, if we use traditional mechanical rock diamonds, it will cause seriousness of the drill, and the frequent economic competitiveness of the drill bit is changed, or due to the increase in maintenance, it cannot be achieved enough Production, even if we use impact water pressure to break the rock, there is also a rock limit, but the process of two or more input energy combinations can break through the looping limit of the process of energy when an energy input is used.[0003]Microwaves are characterized by high heat transfer and high permeability, long penetration, and easy control, and supercritical carbon di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/15E21B7/18E21B17/18E21B17/00E21B10/60E21B10/42E21B21/00
CPCE21B7/15E21B7/18E21B10/42E21B10/602E21B17/00E21B17/18E21B21/00
Inventor 杨晓峰杜宇飞简权曲展慧周家恒聂爱国
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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