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Q.-C. Li et alii, Frattura ed Integrità Strutturale, 44 (2018) 35-48; DOI: 10.3221/IGF-ESIS.44.04

lines in both subgraphs within Fig.10 are almost horizontal straight lines, which indicate that the interference between the fractures within the single fracturing section is independent of the fracturing fluid viscosity.

Figure 9 : Result of fracture morphology after fracturing for 10 minutes by using fracturing fluid with different viscosities. (Deformation scale factor = 500, 30 cluster spacing).

Figure 10 : Results of fracture morphology for fracture propagation when the viscosity of fracturing fluid is different.

The research shows that the short and wide fracture can be obtained by increasing the viscosity of the fracturing fluid. Although the width of the fractures can be increased by this, the length of the fractures may decrease, which is not conducive to increasing the volume of the reservoir stimulated by hydraulic fracturing.

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