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Influence of depressurization rate on gas production capacity of high-rank coal in the south of Qinshui Basin, China
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SU Xuefeng,LIU Yan,CUI Zhouqi,ZHANG Jianguo,YU Li,WANG Kai
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Table 3 Statistics on periodical gas production and time at different depressurization rates.
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Depressuri-
zation rate/
(MPa·d-1) | Starting time of rapid desorption/h | Time to reach total gas production of
2 000 mL/h | Rapid gas production rate/
(mL·h-1) | Duration of rapid gas production/h | | 3.0 | 48 | 101 | 32.75 | 53 | | 1.0 | 69 | 122 | 36.60 | 53 | | 0.5 | 142 | 177 | 44.00 | 35 | | 0.3 | 138 | 240 | 18.14 | 102 |
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