Review Article
Advances in Laboratory-Scale Hydraulic Fracturing Experiments
Figure 8
Schematic of the influence of horizontal stress difference on hydraulic fracture geometry [74]. (a) Horizontal stress difference Kh = 0.25. (b) Horizontal stress difference Kh = 2.5 (Kh = (σy ‒ σx)/σx where σx and σy are, respectively, the minimum and maximum horizontal principal stresses).
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| (b) |