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公开(公告)号:US20140326450A1
公开(公告)日:2014-11-06
申请号:US14335935
申请日:2014-07-20
申请人: SICHUAN UNIVERSITY
发明人: Feng GAO , Heping XIE , Fubao ZHOU , Yang JU , Lingzhi XIE , Yingke LIU , Yanan GAO , Jianfeng LIU , Ru ZHANG
IPC分类号: E21B43/16
CPC分类号: E21B43/168 , E21B43/24 , E21B43/247 , E21B43/26
摘要: A pneumatic fracturing method for exploiting shale gas, the method including: 1) applying a compressed gas for a first period of time at a first pressure to a shale formation; 2) applying the compressed gas for a second period of time at a second pressure to the shale formation; and 3) repeating steps 1) and 2) to produce fissures in the shale formation. A temperature of the compressed gas is at least 80° C. A maximum pressure of the compressed gas is at least 25 megapascal, and a minimum pressure of the compressed gas is between ¼ and ⅓ of the maximum pressure.
摘要翻译: 一种开采页岩气的气压破碎方法,该方法包括:1)将第一次压缩的压缩气体以第一压力施加到页岩层; 2)将压缩气体以第二压力施加到页岩层; 和3)重复步骤1)和2)在页岩层中产生裂缝。 压缩气体的温度为至少80℃。压缩气体的最大压力为至少25兆帕,压缩气体的最小压力为最大压力的1/4和1/3。