YANG Jingfen, XU Hongjie, LIU Huihu, OUYANG Xiong, HAN Sijie. Theoretical storage capacity of free carbon dioxide and its influence factors of anthracite in Jincheng[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(5): 49-54. DOI: 10.3969/j.issn.1001-1986.2018.05.008
Citation: YANG Jingfen, XU Hongjie, LIU Huihu, OUYANG Xiong, HAN Sijie. Theoretical storage capacity of free carbon dioxide and its influence factors of anthracite in Jincheng[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(5): 49-54. DOI: 10.3969/j.issn.1001-1986.2018.05.008

Theoretical storage capacity of free carbon dioxide and its influence factors of anthracite in Jincheng

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National Natural Science Foundation of China(41330638, 41727801)

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  • Received Date: June 11, 2018
  • Published Date: October 24, 2018
  • The free CO2 storage capacity increases gradually with the buried depth in the deep coal seam. The free CO2 storage capacity was calculated and its change with depth was preliminarily analyzed, based on the tested data of coal samples in the south of Qinshui basin, Shanxi Province. The results show that the storage capacity is affected by porosity, gas saturation, temperature, pressure, etc. The capacity increases with the change of physical properties of CO2 injected into the coal, but varies with the size of the experimental particle of the coal. The porosity of coal reservoir decreases significantly with depth of coal under effective stress, and the storage capacity of CO2 is significantly reduced, and also, the capacity increases with the gas saturation.
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