Determination of Specific Surface of Rock Grains by 2D Imaging

Table 1

Specific surface and perimeter and Geometric Coefficient (𝐶_𝑔) calculated by model.

Rock type	Resolution (µm)	Number of Samples	Specific surface (mm^−1)		Specific perimeter (mm^−1)		Porosity		Geometric Coefficient
			Average	Standard deviation	Average	Standard deviation	Average	Standard deviation	Average	Standard deviation
Berea	5.36	512	30.22	6.84	22.25	3.06	0.2	0.06	1.37	0.31
Sandstone 1	4.96	216	36.59	5.41	27.49	5.41	0.25	0.05	1.34	0.21
Sandstone 2	9.1	216	23.86	3.22	17.42	1.78	0.17	0.03	1.38	0.19
Carbonate 1	2.85	512	55.73	42.7	43.53	22.78	0.23	0.17	1.32	0.83
Carbonate 2	5.35	512	27.58	21.66	20.71	9.36	0.17	0.14	1.36	0.92
Sand pack	10	216	22.09	3.39	16.51	1.77	0.33	0.05	1.35	0.20