A dynamic evolution model of coal permeability during enhanced coalbed methane recovery by N<sub>2</sub> injection: experimental observations and numerical simulation.

RSC Adv · 2021 · PMC9032761 · PMID 35479704

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an increasing trendno p-value reported

As displayed in figure, the variation curves of coal permeability during CH 4 displacement by N 2 injection both present an increasing trend with injection pressure, but the increase rate slows down gradually.

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