Hydraulic Fracturing Breakdown Pressure and Prediction of Maximum Horizontal In Situ Stress

Table 2

Range of input and output parameters.

		Character	Unit	Minimum	Maximum
Input parameter	Minimum horizontal stress		MPa	20	40
	Normalized initial crack length		---	0.015	3
	Tensile strength		MPa	20.82	31.23
	Breakdown pressure		MPa	12.37	64.49
Output parameter	Maximum horizontal stress		MPa	20	110