Perforating gun for reducing mine earthquake grade

• Main Authors: SUN BAOJIANG, HAN ZHONGYING, ZOU XINSHU, ZHANG XIUFENG, WANG GUANGMIN, XUE MINGYU, XIE HUADONG, LI PAN, YAN CHUANLIANG, YAN XIANYANG, CHENG YUANFANG, WANG CHUNYAO, WANG CHAO
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2021
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The utility model relates to a perforating gun for reducing mine earthquake grade. In order to overcome the defects in the prior art, the perforating gun for reducing the mine earthquake grade comprises a gun barrel and a perforating bullet fixing seat, the shooting holes and the perforating bullets corresponding to the shooting holes are opposite in pairs, the axial leads of the opposite perforating bullets coincide and perpendicularly intersect with the axial lead of the gun barrel, and the gun barrel is provided with a plurality of shooting holes. And the axial leads of all the launching holes and the perforating bullets are distributed on a vertical plane in parallel. The perforating gun for reducing the mine earthquake grade has the advantages of being simple in structure and convenient to use, the method for reducing the mine earthquake grade through hydraulic fracturing can effectively split a plurality of hydraulic fracturing faces parallel to a working face on a key layer top plate, the top plate can