Fig. 5 | Scientific Reports

Fig. 5

From: Coal-forming sedimentary model and its control on vertical reservoir heterogeneity of the upper carboniferous Benxi formation in Ordos basin, China

Fig. 5

CO2 adsorption (a), N2 adsorption and desorption (b), mercury adsorption (c) isotherms of coal in Qi 36 well, 8 # coal, Benxi Formation, Ordos Basin. (a) The low-pressure CO2 adsorption method is used to describe the pore distribution characteristics of micropores. From the figure, it can be found that in general, the samples with high ash content have less CO2 adsorption; the samples with low ash content have more CO2 adsorption. (b) The low-pressure N2 adsorption/desorption method is used to describe the pore distribution characteristics of mesopores. From the figure, it can be found that in general, the samples with high ash content have more amount of N2 adsorption and desorption; the samples with low ash content have less amount of N2 adsorption and desorption. (c) The mercury intrusion method is used to describe the pore distribution characteristics of macropores. From the figure, it can be found that in general, the samples with high ash content have more amount of Hg intrusion and removal; the samples with low ash content have less amount of Hg intrusion and removal.

Back to article page