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>Concentration variation of observation hole.</div>

Geofluids

fig8

Figure 8

Figure 8: 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 8 | Gas Displacement Engineering Test by Combination of Low and Medium Pressure Injection with Liquid CO2 in High Gas and Low Permeability Coal Seam 