Table 3 Physical parameters of the rock.

From: Investigation of crack propagation patterns on the borehole wall during single-borehole hydraulic fracturing under different in-situ stress ratios

Mechanical Parameter

Value

Unit

Elastic Modulus

35.1

GPa

Poisson’s Ratio

0.2

 

Average Uniaxial Compressive Strength

160

MPa

Water Viscosity

0.001

Pa·s

Water Density

1000

Kg/m3

Injection Pressure

40

MPa

Average Internal Friction Angle

37

degrees

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