Shock and Vibration / 2019 / Article / Tab 4

Research Article

Mechanisms of Crack Initiation and Propagation in Dense Linear Multihole Directional Hydraulic Fracturing

Table 4

Numerical simulation scheme.

No.Principal stress (MPa)Borehole spacing D (mm)Angle θ between borehole direction and σ1. (°)

A1σ1 = 11, σ3 = 922515°
A2σ1 = 11, σ3 = 922530°
A3σ1 = 11, σ3 = 922545°
A4σ1 = 11, σ3 = 922560°
A5σ1 = 11, σ3 = 922575°
B1σ1 = 11, σ3 = 9200 (5d)40°
B2σ1 = 11, σ3 = 9240 (6d)40°
B3σ1 = 11, σ3 = 9280 (7d)40°
B4σ1 = 11, σ3 = 9320 (8d)40°
B5σ1 = 11, σ3 = 9360 (9d)40°
C1σ1 = 11, σ3 = 1022540°
C2σ1 = 11, σ3 = 822540°
C3σ1 = 11, σ3 = 622540°
C4σ1 = 11, σ3 = 422540°
C5σ1 = 11, σ3 = 222540°