Micro- and Nanoscale Pore Structure Characterization of Carbonates from the Xiaoerbulake Formation in the Tarim Basin, Northwest China

Table 2

Total pore volume and permeability contribution of the four pore networks to each sample.

Pore network type	Sample	Pore volume (%)	(%)	Pore volume (%)	(%)	Pore volume (%)	(%)	Pore volume (%)	(%)
		>10 μm		1 μm-10 μm		0.1 μm-1 μm		10 nm-100 nm
II	SGT 1-4-3	6.3	87.4	29.5	12.51	14.5	0.060	49.8	0.0003
II	SGT 1-7-A	9.0	92.9	28.1	6.53	21.3	0.617	41.5	0.0020
III	SGT 4-28-F	50.9	97.5	29.3	2.44	7.6	0.022	4.3	0.0000
I	SGT 4-30-E	2.0	16.8	2.6	82.87	85	0.353	10.3	0.0060
III	SGT 5-47-A	35.2	96.1	24.5	3.39	21.9	0.475	18.5	0.0010
II	SGT 6-49-A	23.4	96.0	15.0	3.97	9.3	0.020	52.3	0.0005
I	SGT 6-56-2	17.9	97.5	7.9	2.57	2.2	0.034	72.1	0.0004
II	SHY 1-002-3	11.7	90.9	34.7	9.06	9.6	0.035	44.0	0.0001
I	SHY 1-008-2	9.0	96.0	24.7	4.01	43.7	0.015	22.6	0.0020
II	SHY 1-011-2	17.0	96.7	20.5	3.00	16.9	0.279	45.6	0.0010
II	SHY 1-018-1	15.8	88.1	29.2	11.79	23.5	0.067	31.4	0.0001
III	SHY 3-030-3	32.6	93.6	41.8	6.41	20.1	0.000	5.5	0.0000
III	SHY 3-041-3	36.2	88.2	44.3	11.81	17.5	0.005	2.0	0.0000
III	SHY 3-098	36.7	95.0	29.4	4.94	17.9	0.049	16.0	0.0000
I	SHY 4-091-D	3.9	93.6	22.4	5.81	27.6	0.580	46.1	0.0160
II	SHY 5-107-3	2.9	71.2	32.6	25.77	35.8	3.000	28.7	0.0040
I	SHY 5-108-D	5.9	78.4	10.3	21.69	79.2	0.014	4.6	0.0000
II	SHY 6-133-1	10.7	87.1	25.7	12.47	57.3	0.388	6.3	0.0010
Average		18.2	86.8	25.1	12.84	28.4	0.334	27.9	0.0019

: the permeability contribution of each pore network.