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

Table 1

Initial experimental parameters of Zhou et al. and Jiang et al.

Experimental group		(GPa)		(MPa·m^1/2)	(MPa)		(mPa·s)	(m^3/min)
Zhou et al.	Initiation layer	8.402	0.23	0.59			135
	Adjacent layer	8.402	0.23	0.59
	Interface				3.2	0.89
Jiang et al.	Initiation layer	3.63	0.19	0.52			1
	Adjacent layer	2.75	0.23	0.20
	Interface				0	0.32