Experimental Study of Volumetric Fracturing Properties for Shale under Different Stress States

Table 1

Experiment program for hydraulic fracturing simulation of shale rock specimens.

Types of injection well	Specimen number	Triaxial stress (MPa) //	SDC ()	Fracturing fluid viscosity (mPa s)	Types of stress states
Vertical well	#A-1	14/3/2	0.5	2.5	Constant load
	#A-2	14/3/2	0.5	2.5	Pressurization disturbance load
Horizontal well	#B-1	14/3/2	0.5	2.5	Constant load
	#B-2	14/3/2	0.5	2.5	Pressurization disturbance load
Horizontal well	#C-1	14/12/2	5	2.5	Constant load
	#C-2	14/12/2	5	2.5	Depressurization disturbance load