System for extracting gas from tectonically-deformed coal seam in-situ by depressurizing horizontal well cavity

• School Sign:第一单位
• Disigner of the Invention:徐宏杰,wangran,贾金龙,zhushuyun,Liu Shiqi,caoliwen,Perry,王海文,刘会虎,李自成,Harrsion Huang,刘长江
• Type of Patent:国内
• State of Patent:专利授权
• Application Number:2018421311
• Service Invention or Not:no
• Application Date:2018-10-18
• Authorization Date:2021-04-07
• First Author:sangshuxun