Some sample values for coal “Bulk “density from the Hartshone coal, Arkoma Basin are shown below:
Bulk Density
Bulk coal density includes the organic and inorganic fractions of this rock and the voids it contains, which are often water filled. As shown in the table below, coal density tends to increase with impurities
References:
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John Seidle, Fundamentals of Coalbed Methane: Reservoir Engineering, 2011, PennWell Corporation.