Micropore Characteristics and Gas-Bearing Characteristics of Marine-Continental Transitional Shale Reservoirs in the East Margin of Ordos Basin

Table 4

Pore structure parameters of high-pressure mercury injection and low-temperature liquid nitrogen adsorption experiment in well Y1.

Sample No.	High-pressure mercury pore structure parameters				Cryogenic liquid nitrogen pore structure parameters
	Average pore size (nm)	Specific pore volume; (cm^3/g)	Specific surface area (m^2/g)	Porosity (%)	Average pore size (nm)	Total pore volume (cm^3/g)	BET surface area (m^2/g)
Y1-4	17.88	0.013	2.8058	3.3503	7.77312	0.018128	9.328797
Y1-7	26.34	0.0053	0.7688	1.3977	9.569508	0.021441	8.962331
Y1-20	9095	0.006	0.0021	1.5052	9.087332	0.015925	7.009854
Y1-26	26.9	0.0103	1.4364	2.6505	6.641249	0.020658	12.442336
Y1-27	74.54	0.0162	0.7726	3.9976	9.77518	0.015299	6.260349
Y1-38	28.75	0.0037	0.0497	0.974	26.886218	0.014369	2.137808
Y1-49	114.7	0.0047	0.157	1.2517	6.729061	0.011809	7.019995