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

Figure 6

Comparison of proppant pillar profiles from experiments and from numerical modeling: (a) lateral view before the testing in the experiment, (b) top view after the testing in the experiment, (c) lateral view before the testing in the numerical modeling, and (d) top view after the testing in the numerical modeling.

(a)

(b)

(c)

(d)