Experimental Study on Seepage Flow Law of Supercritical Carbon Dioxide in Low Permeability Coal Seam

摘要：

By the self development THM three fields coupled seepage experiment system, a series of seepage experiments injecting super critical CO2 has been done in different pore pressure and temperature conditions, and got the relationship between the flow velocity and the pressure gradient in different temperatures, then it revealed the non - Darcy seepage law when injecting the super critical CO2 into the low permeability coal seam, which means the flow velocity V and pressure gradient V P presented a positive exponential relationship V = Ae ; In the same volume stress and pressure gradient conditions, the higher the temperature is, the faster the flow velocity; The temperature near the critical point, the flow velocity increases faster; The permeability coefficient increased with the pore pressure increasing, and presented a exponential relationship; In the same volume stress and pore pressure conditions, the temperature near the critical point, the permeability coefficient increases faster.

关键词： dioxide low permeability coal seam seepage flow experimental study

作者: Sun Keming Ren Shuo Chen Zhiyu Wu Di Yue Lixin Li Zan

作者单位: Liaoning Technical University,Mechanics and Engineering,Fuxin,123000,China

会议类型: 国际会议

会议名称: the 4th International Symposium on Mine Safety (2012) 第四届国际矿山安全学术研讨会(2012)

会议地点: 阜新

会议语种:英文

页码: 94-97

在线出版日期: 2012-08-04（万方平台首次上网日期，不代表论文的发表时间）