Experimental Study on Hydraulic Fracturing of Laminated Sandstone Combined with Industrial CT and L-NMR

Table 3

Fracture parameters of samples before and after hydraulic fracturing.

No.	(mm^3)		(mm^2)		(mm^-1)				(mm)
	B.H.F.	A.H.F.	B.H.F.	A.H.F.	B.H.F.	A.H.F.	B.H.F.	A.H.F.	B.H.F.	A.H.F.
1-1	0.00	499.65	0.00	12780.51	0.0000	0.0657	0.00%	0.26%	0.0000	0.0391
1-2	20.66	488.12	442.94	11973.59	0.0023	0.0616	0.01%	0.25%	0.0466	0.0408
1-3	0.03	450.28	3.66	9546.83	0.0000	0.0491	0.00%	0.23%	0.0071	0.0472
1-4	0.09	710.68	3.04	13779.77	0.0000	0.0709	0.00%	0.37%	0.0296	0.0516
1-5	0.02	463.25	0.65	10667.77	0.0000	0.0549	0.00%	0.24%	0.0308	0.0434
1-6	12.31	507.13	186.64	11956.16	0.0010	0.0615	0.01%	0.26%	0.0660	0.0424
1-7	0.26	643.49	8.11	12173.49	0.0000	0.0626	0.00%	0.33%	0.0321	0.0529
1-8	0.00	563.26	0.00	12932.08	0.0000	0.0665	0.00%	0.29%	0.0000	0.0436
1-9	85.65	429.90	2757.90	9947.24	0.0142	0.0512	0.04%	0.22%	0.0311	0.0432
1-10	291.57	713.89	6333.31	14292.29	0.0326	0.0735	0.15%	0.37%	0.0460	0.0499

Note: B.H.F. and A.H.F. mean before hydraulic fracturing and after hydraulic fracturing, respectively.