Experimental study on the effects of the moisture content of bituminous coal on its gas seepage characteristics

2018 ◽  
Vol 11 (15) ◽  
Author(s):  
Dingyi Hao ◽  
Lei Zhang ◽  
Zhiwei Ye ◽  
Shihao Tu ◽  
Cun Zhang
Keyword(s):  
Experimental Study ◽  
Moisture Content ◽  
Bituminous Coal ◽  
Gas Seepage ◽  
Seepage Characteristics

scholarly journals Coupled Effects of Stress, Moisture Content and Gas Pressure on the Permeability Evolution of Coal Samples: A Case Study of the Coking Coal Resourced from Tunlan Coalmine

Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1653
Author(s):  
Guofu Li ◽  
Yi Wang ◽  
Junhui Wang ◽  
Hongwei Zhang ◽  
Wenbin Shen ◽  
...  
Keyword(s):  
Moisture Content ◽  
Coalbed Methane ◽  
Gas Permeability ◽  
Axial Stress ◽  
Gas Pressure ◽  
Pressure Curve ◽  
Permeability Evolution ◽  
Confining Stress ◽  
Qinshui Basin ◽  
Gas Seepage

Deep coalbed methane (CBM) is widely distributed in China and is mainly commercially exploited in the Qinshui basin. The in situ stress and moisture content are key factors affecting the permeability of CH4-containing coal samples. Therefore, considering the coupled effects of compressing and infiltrating on the gas permeability of coal could be more accurate to reveal the CH4 gas seepage characteristics in CBM reservoirs. In this study, coal samples sourced from Tunlan coalmine were employed to conduct the triaxial loading and gas seepage tests. Several findings were concluded: (1) In this triaxial test, the effect of confining stress on the permeability of gas-containing coal samples is greater than that of axial stress. (2) The permeability versus gas pressure curve of coal presents a ‘V’ shape evolution trend, in which the minimum gas permeability was obtained at a gas pressure of 1.1MPa. (3) The gas permeability of coal samples decreased exponentially with increasing moisture content. Specifically, as the moisture content increasing from 0.18% to 3.15%, the gas permeability decreased by about 70%. These results are expected to provide a foundation for the efficient exploitation of CBM in Qinshui basin.

scholarly journals Experimental study on the permeability and seepage characteristics of bimsoils

2021 ◽  
Vol 12 (1) ◽  
pp. 3001-3020
Author(s):  
Yingchao Wang ◽  
Shunhua Zheng ◽  
Yueming Wang ◽  
Yin Guo
Keyword(s):  
Experimental Study ◽  
Seepage Characteristics

Experimental study on seepage characteristics of reservoir embankment considering interval of horizontal filter

2019 ◽  
Vol 17 (2) ◽  
pp. 273-280
Author(s):  
Younghak lee ◽  
Jaesung Park ◽  
Kazunori Fujisawa ◽  
Akira Murakami ◽  
Dalwon Lee
Keyword(s):  
Experimental Study ◽  
Seepage Characteristics
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