Representative Elementary Volume of Rock Using X-Ray Microcomputed Tomography: A New Statistical Approach

Table 7

Influence of CV threshold value on REV. Associated equations are listed in Table 6.

Porous medium	Threshold (-)	REV (mm^3) from data curve	REV (mm^3) from fitting equation
Glass bead pack	0.025	0.09	0.05
Sand pack	0.025	2.95	3.55
Bentheimer	0.025	>10.50	>10.50
St. Bees sandstone	0.025	5.40	>6.00
Mt. Gambier carbonate	0.025	>10.50	>10.50
Glass bead pack	0.050	0.01	0.01
Sand pack	0.050	1.95	1.33
Bentheimer	0.050	2.70	2.50
St. Bees sandstone	0.050	2.23	2.70
Mt. Gambier carbonate	0.050	4.00	6.90
Glass bead pack	0.075	0.01	0.01
Sand pack	0.075	0.50	0.74
Bentheimer	0.075	0.85	0.85
St. Bees sandstone	0.075	0.18	0.85
Mt. Gambier carbonate	0.075	1.95	2.45