Effect of Eccentricity on Breakout Propagation around Noncircular Boreholes

Table 1

Geometric and mechanical parameters [34, 36].

Parameters	Value	Unit
Young’s modulus	14.4
Poisson’s ratio	0.2	—
Cohesion	20
Internal friction angle	40
Borehole pressure	20
Maximum horizontal in situ stress	100
Minimum horizontal in situ stress	60
Borehole radius	0.15