Criterion for Hydraulic Fracture Propagation Behavior at the Interface of a Coal Measure Composite Reservoir

Table 2

Comparison of Zhou et al.’s experimental results and the results of the proposed criterion.

No.	(°)	(MPa)	(MPa)	(MPa)	(m)	Experimental results	Criterion results	Uniformity
1	90	5	10	5	0.0011	Penetration	Penetration	✔
2	90	3	10	7	0.0019	Penetration	Penetration	✔
3	60	3	13	10	0.0026	Penetration	Penetration	✔
4	60	5	8	3	0.0026	Penetration	Penetration	✔
5	60	3	10	7	0.0026	Deflection	Deflection	✔
6	30	5	8	3	0.0012	Deflection	Deflection	✔
7	30	5	10	5	0.0012	Deflection	Deflection	✔
8	30	3	13	10	0.0021	Arrested	Deflection	✘