Investigation of Multiscaled Pore Structure of Gas Shales using Nitrogen Adsorption and FE-SEM Imaging Experiments

Table 1

TOC and mineral compositions of the investigated marine shale samples.

Sample	Basin	Stratigraphy	TOC content (wt%)	Quartz (wt%)	Orthoclase (wt%)	Plagioclase (wt%)	Carbonates (wt%)	Total clays (wt%)
JY41	Sichuan	S1l	1.00	34.70	1.10	3.60	5.90	53.00
JY51	Sichuan	S1l	1.23	26.80	0.80	5.80	4.40	58.90
JY55	Sichuan	S1l	1.38	29.80	0.90	5.10	5.20	56.50
JY61	Sichuan	S1l	1.58	27.20	0.70	5.50	10.00	53.60
JY71	Sichuan	S1l	1.02	26.00	1.10	7.30	27.00	35.80
JY85	Sichuan	S1l	2.11	28.20	1.40	6.80	12.50	47.20
JY91	Sichuan	S1l	2.60	38.00	1.10	4.80	7.70	45.90
JY101	Sichuan	S1l	2.15	38.10	1.20	3.30	13.10	38.60
JY105	Sichuan	S1l	2.78	43.10	1.10	5.50	13.10	32.50
JY111	Sichuan	S1l	3.29	45.50	1.20	4.20	10.60	32.20
JY115	Sichuan	S1l	3.76	31.30	1.60	6.20	23.00	33.50
JY119	Sichuan	S1l	5.36	55.30	1.50	4.40	7.60	28.70
JY121	Sichuan	S1l	3.65	59.50	1.20	2.20	7.90	25.40