Research and Application of Coal Seam Permeability Improvement Technology by Sectional Directional Hydraulic Fracturing

<div>Borehole arrangement of segmented point directional fracturing test. (a) Sectional directional hydraulic fracturing arrangement. (b) Sectional directional hydraulic fracturing fracture propagation.</div>

Shock and Vibration

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Figure 4

Figure 4: Research and Application of Coal Seam Permeability Improvement Technology by Sectional Directional Hydraulic Fracturing 