An Investigation of Fractal Characteristics of Marine Shales in the Southern China from Nitrogen Adsorption Data

Table 2

Pore structure parameters of shale samples from N₂ adsorption isotherms.

Number	Total pore volume (cm^3/g)	Specific surface area (m^2/g)	Monolayer volume (cm^3/g)^a	Average pore size (nm)^b
L1	0.03074	18.821	0.006685	6.532
L2	0.03313	16.509	0.005864	8.028
L3	0.02744	19.592	0.006959	5.602
L4	0.02246	15.593	0.005539	5.762
L5	0.02297	9.885	0.003511	9.296
L6	0.02823	16.881	0.005996	6.690
L7	0.01263	7.147	0.002539	7.069
L8	0.01176	6.354	0.002257	7.404
L9	0.01417	7.991	0.002839	7.095
L10	0.01602	12.458	0.004425	5.144
L11	0.01962	12.030	0.004273	6.524
L12	0.02504	14.817	0.005263	6.760
L13	0.01776	13.290	0.004721	5.345
L14	0.01769	17.358	0.006166	4.076
L15	0.01785	16.719	0.005939	4.271
L16	0.01754	16.130	0.005730	4.349
L17	0.01674	16.441	0.005840	4.074
L18	0.01700	16.993	0.006036	4.002
G1	0.02268	9.330	0.003314	9.723
G2	0.03582	19.707	0.007000	7.270
G3	0.04374	24.236	0.008609	7.219
G4	0.04097	22.473	0.007982	7.292
N1	0.03810	32.501	0.011545	4.689
N2	0.03466	25.529	0.009068	5.431
N3	0.01443	7.310	0.002597	7.897
N4	0.01908	8.361	0.002970	9.128
N5	0.02636	12.241	0.004348	8.616
N6	0.01596	11.522	0.004093	5.539
N7	0.01463	12.708	0.004514	4.605
N8	0.02181	23.903	0.008491	3.649
N9	0.02408	27.001	0.009591	3.567
N10	0.00195	1.645	0.000584	4.749
N11	0.00272	2.760	0.000981	3.947
N12	0.00528	4.770	0.001694	4.424
N13	0.00327	1.969	0.000699	6.638
N14	0.00520	3.615	0.001284	5.757
N15	0.00414	2.464	0.000875	6.718
N16	0.01894	20.172	0.007165	3.755
N17	0.00548	2.755	0.000979	7.951
WL1	0.03652	30.101	0.010692	4.853
WL2	0.02327	20.838	0.007402	4.467
WL3	0.01267	10.750	0.003818	4.716
WL4	0.02802	22.616	0.008033	4.956
WL5	0.02652	24.178	0.008588	4.387
WL6	0.02577	23.487	0.008343	4.389
WL7	0.02420	20.779	0.007381	4.658
WL8	0.01992	16.694	0.005930	4.773
WL9	0.02391	22.12	0.007857	4.324
WL10	0.02433	22.321	0.007929	4.360
WL11	0.02993	17.34	0.006159	6.904
WL12	0.02194	19.528	0.006936	4.494
WL13	0.02092	18.65	0.006625	4.488
WL14	0.02174	17.027	0.006048	5.106

^aThe monolayer volume is calculated by BET method [25]. ^bAverage pore size = 4 Total pore volume/specific surface area.