Underground electric blasting type fracturing tool

Abstract

The invention relates to an underground electric blasting type fracturing tool used for blasting a drill hole. The underground electric blasting type fracturing tool comprises an outer cylinder, a packer and an explosion generator; the packer is fixed to the outer surface of the outer cylinder and abuts against the inner wall of the drill hole so that a closed blasting space can be formed in the drill hole; the explosion generator is fixed to the end, located in the drill hole, of the outer cylinder; a water flow channel is formed in the outer cylinder; and the explosion generator can atomize water flow flowing to the explosion generator along the water flow channel, and explosion is generated. According to the underground electric blasting type fracturing tool, hydraulic fracturing serves as the basis, electric energy is used, electricity is released instantly in water, water is converted into water mist and other forms, and external force is generated. Fracturing is conducted through energy of the external force, a good effect is generated, cost is greatly reduced, the underground electric blasting type fracturing tool conforms to the basic technology of oil extraction and gas extraction and is widely applied to mine fields and oil fields, and the oil and gas recovery rate is greatly increased.

Description

technical field [0001] The invention relates to the technical field of drilling tools, in particular to a downhole electric explosion fracturing tool. Background technique [0002] At present, most of the coal seams mined by high-gas and outburst mines in my country are low-permeability coal seams, which have poor air permeability, difficult gas extraction and low efficiency. Coal seams and soft coal floor rock formations, such coal mines have complex geological structures and poor storage conditions. These conditions are particularly prominent, which seriously restrict mine safety production. [0003] As a pressure-relief and permeability-increasing measure for low-permeability coal seams, hydraulic fracturing has the advantages of simple process, large influence range, and low risk, and has been widely used in recent years. Furthermore, on the basis of the existing hydraulic fracturing, a variety of fracturing tools have been produced successively, using blasting technolog...

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