Experimental Study on Water Sensitivity Difference Based on Oiliness of Porous Medium Rock

Table 2

Table for evaluation of water sensitivity damage of saturated core.

Block	Core number	Porosity (%)	Initial permeability (mD)	Damage rate (%)	Water sensitivity degree	Critical value of salinity (mg/L)
ZD	ZD4	10.268	0.307	43.33	Medium-slightly weak	4936.85
	ZD5	15.32	7.631	44.44	Medium-slightly weak	4936.85
HLM	H4	7.135	1.634	33.33	Medium-slightly weak	2415.73
	H5	2.63	0.158	30.16	Medium-slightly weak	2415.73