Gas Displacement Engineering Test by Combination of Low and Medium Pressure Injection with Liquid CO<sub>2</sub> in High Gas and Low Permeability Coal Seam

<div>Correlation diagram between average gas drainage concentration and average gas drainage purity.</div>

Geofluids

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Figure 9

Figure 9: Gas Displacement Engineering Test by Combination of Low and Medium Pressure Injection with Liquid CO<sub>2</sub> in High Gas and Low Permeability Coal Seam 

Figure 9 | Gas Displacement Engineering Test by Combination of Low and Medium Pressure Injection with Liquid CO2 in High Gas and Low Permeability Coal Seam 