DEM-CFD Modeling of Proppant Pillar Deformation and Stability during the Fracturing Fluid Flowback

<div>Evolution of the proppant pillar profile for different fluid viscosities, with velocity boundary applied at the inlet: (a) 0.001 Pa·s, (b) 0.01 Pa·s, and (c) 0.02 Pa·s.</div>

Geofluids

fig20

Figure 20

Figure 20: DEM-CFD Modeling of Proppant Pillar Deformation and Stability during the Fracturing Fluid Flowback 