Novel device capable of increasing coal seam cracks

Abstract

The invention overcomes the shortcomings in the prior art and provides a novel device capable of increasing coal seam cracks, guiding the existing high pressure gas, greatly reducing the loss of the target pressure, improving the fracturing efficiency and greatly increasing gas efficiency. The novel device capable of increasing the coal seam cracks comprises an energy release valve body, a deflector is disposed at the top of a chamber of the energy release valve body, the deflector is of a rotary body structure with the parabolic section, the deflector is disposed upside down on the top of theenergy release valve body, and a gas pressure relief vent is disposed in the side wall of the energy release valve body corresponding to the upper portion of a pressure concentrating device, so thathigh pressure gas entering the chamber of the energy release valve body can be ejected out from the gas pressure relief vent. The novel device can be widely applied to the fields of coal bed gas and underground coal mine gas extraction and fracturing.

Description

technical field [0001] The invention is a novel device capable of enlarging coal seam fissures, which belongs to the technical field of coal bed gas exploitation and underground gas drainage in coal mines. Background technique [0002] At present, when fracturing coalbed methane wells and underground gas drainage in coal mines, high-pressure gas is often used for fracturing, but the existing fracturing devices have problems of high pressure and kinetic energy loss. Even if the pressure of high-pressure gas in the power source is large enough, The pressure and impulse acting on the coal body will also drop a lot, resulting in the limited capacity of existing gas fracturing, not only wasting high-pressure gas from the power source, but also resulting in extremely low efficiency of coalbed methane extraction. Contents of the invention [0003] The present invention overcomes the deficiencies of the prior art, and provides a new type of device capable of enlarging coal seam fi...

AI Technical Summary

Problems solved by technology

[0002] At present, when fracturing coalbed methane wells and underground gas drainage in coal mines, high-pressure gas is often used for fracturing, but the existing fracturing devices have problems of high pressure and kinetic energy loss. Even if the pressure of high-pressure gas in the power source is large enough, The pressure and impulse acting on the coal body will also drop a lot, resulting in the limited capacity of existing gas fracturing, which not only wastes high-pressure gas from the power source, but also leads to extremely low efficiency of coalbed methane extraction

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