Coal bed gas fracturing device and using method thereof

Abstract

The invention discloses a coal bed gas fracturing device and a using method thereof. The coal bed gas fracturing device comprises a device body, wherein the device body is of a cavity structure, a supporting rod is arranged at the bottom of an inner cavity of the device body, a mounting groove is formed in an inner cavity of the supporting rod, a spring is fixedly connected to the inner wall of the mounting groove, one end of the supporting rod is connected with a telescopic rod, one end of the telescopic rod extends into the supporting rod, the telescopic rod is slidably connected with the inner wall of the supporting rod, a pressing plate is mounted at one end of the telescopic rod, and a protection box is arranged on the top side of the pressing plate. The supporting rod is arranged at the bottom of the device body, the spring is arranged in the inner cavity of the supporting rod, the protection box can be damped through cooperation of the spring and the pressing plate, and the situation that gas fracturing equipment is damaged due to vibration is prevented; and positioning plates and a handle are arranged at the two ends of the device body in a matched mode, a protection block is arranged at one end of a handle, the positioning plates are located in grooves in the two sides of the protection box, and the protection box can be fixed at different height positions under different conditions.

Description

technical field [0001] The invention relates to the technical field of gas fracturing equipment, in particular to a coal bed gas fracturing device and a method for using the same. Background technique [0002] At present, in the domestic coalbed methane mining process, the fracturing technology adopted is the conventional fracturing technology, that is, using softened water + quartz sand as the support fluid, and making one main fracture as the main fracture and multiple mesh fractures as the supplementary technology. [0003] The disadvantage of the existing technology is that the coal seam cannot be broken fundamentally, the pressure in the coal seam cannot be released to the maximum extent, and the coal bed gas molecules such as methane can only be decomposed around the joints created, thereby causing the coal bed methane The recovery rate is only 30%-40%, and the low-volume output of coalbed methane is achieved by long-term extraction. Contents of the invention [000...

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Problems solved by technology

[0003] The disadvantage of the existing technology is that the coal seam cannot be broken fundamentally, the pressure in the coal seam cannot be released to the maximum extent, and the coal bed gas molecules such as methane can only be decomposed around the joints created, thereby causing the coal bed methane The recovery rate is only 30%-40%, and the low-volume output of coalbed methane is achieved by long-term drainage

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