Investigation of the Velocities of Coals of Diverse Rank under Water- or Gas-Saturated Conditions for Application in Coalbed Methane Recovery

<div>Images of 76 coals with different ranks. (a) Overall view of the 76 coal cores, (b) lateral display of lignite cores, and (c) sketch image of UPV test method.</div>

Geofluids

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Figure 2

Figure 2: Investigation of the Velocities of Coals of Diverse Rank under Water- or Gas-Saturated Conditions for Application in Coalbed Methane Recovery 

Figure 2 | Investigation of the Velocities of Coals of Diverse Rank under Water- or Gas-Saturated Conditions for Application in Coalbed Methane Recovery 