Experimental Study on Physical Characteristics of Deep Rocks at Different Depths in Songliao Basin

Table 5

Porosity measured by the water saturated drying method.

Depth/m	Porosity (%)			Average porosity (%)
4900	1.98	1.78	1.07	1.61
5400	1.44	0.91	1.11	1.15
5700	1.75	0.76	0.89	1.13
6000	0.92	0.62	0.55	0.7
6250	0.89	0.54	0.51	0.65
6500	0.54	0.75	0.67	0.65
6700	0.61	0.64	0.68	0.64
6830	0.76	0.61	0.52	0.63