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

<div>Profiles of the proppant pillar at different flow times: (a) right after fracture closing, (b) flow time of 0.00015 s, (c) flow time of 0.0005 s, and (d) flow time of 0.0105 s. The red square in (b) represents the location of a monitoring fluid cell.</div>

Geofluids

fig11

Figure 11

Figure 11: DEM-CFD Modeling of Proppant Pillar Deformation and Stability during the Fracturing Fluid Flowback 