Describing the Full Pore Size Distribution of Tight Sandstone and Analyzing the Impact of Clay Type on Pore Size Distribution

Table 1

Petrophysical parameters and mineral compositions of the seven tight sandstones.

Sample		4	264	904	905	118	119	120
Depth (m)		2796.37	3014.56	7870	7902.29	\	\	\
Porosity (%)		6.93	6.31	4.47	5.68	16.51	16.69	16.58
Permeability (mD)		0.019	0.035	0.001	0.008	0.175	0.166	0.201
Content of mineral component from XRD	Quartz (%)	82.3	77.83	63.27	70.72	55.97	48.28	49.64
	K-feldspar (%)	0.34	0	5.65	2.35	0.86	1.4	6.57
	Anorthoclase (%)	7.94	0	16.23	9.56	26.44	31.15	29.05
	Calcite (%)	0	5.21	0	0	0	0	0
	Dolomite (%)	0.69	0	3.8	14.73	2.79	3.55	1.54
	Siderite (%)	0	1.49	0	0	0	0	0
	Pyrite (%)	0	0	2.05	0.07	0	0	0
Content of clay from XRD	Illite (%)	0	0	3.62	1.69	0	0	0
	Chlorite (%)	0	0	0	0	12.65	10.56	11.08
	Kaolinite (%)	5.25	12.64	0	0	0	0	0