MULTI-PHYSICAL PHENOMENA IN COAL ASSOCIATED WITH COALBED METHANE RECOVERY AND CO2 GEO-EQUESTRATION

摘要：

In this paper,mechanical deformation and gas adsorption/desorption occurring in coal under reservoir conditions are investigated with a specially designed true tri-axial stress coal permeameter (TTSCP) using large coal samples with CH4 pre-adsorbed.The investigation provides experimental information about the gas storage and transport in coals for better understanding of the coalbed methane (CBM) recovery and CO2 geo-sequestration enhanced CBM (CO2-ECBM).Whilst the mechanical deformation is subject to the external stress and gas pressure in pores which are controllable with TTSCP,volumetric change in coal induced by gas adsorption/desorption in terms of coal swelling/shrinkage is monitored using strain gauge detached on the coal sample.The results can be used for determination of pore compressibility of coal and evaluation of the swelling/shrinkage coefficients.

关键词： Coal multi-physics coalbed methane (CBM) swelling/shrinkage

作者: G.X.Wang P.Massarotto V.Rudolph

作者单位: School of Engineering,The University of Queensland,St Lucia,Qld 4074,AUSTRALIA School of Engineering,The University ofQueensland,St Lucia,Qld 4074,AUSTRALIA

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 395-398

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）