Shock and Vibration / 2019 / Article / Fig 7

Research Article

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

Figure 7

Crack initiation of directional hydraulic fracturing controlled by dense linear multihole drilling with various parameter values. (a) Angle θ between borehole direction and σ1. (b) Borehole spacing D. (c) Difference in principal stress Δσ.

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