Pore Structure Alteration Characteristics of Different Mineralogical Composition Shale during Shale-Fracturing Fluid Physical-Chemical Interactions

Table 4

Pore structure parameters of the shale samples before and after slick water treatment.

Samples	State	Specific surface area (m^2/g)	Total pore volume (cm^3/g)	Average pore diameter (nm)
YY	Raw	1.55	0.00466	11.99
	Treated	7.73	0.01407	7.28
GZ	Raw	6.51	0.01226	7.54
	Treated	2.05	0.00763	14.87