Supplemental Videos

The two supplemental videos show the concurrent brightfield and darkfield videos and the injection pressure signal for the experiments when water is injected into a monolayer of cohesive, photoelastic particles saturated with silicone oil. The injection rate is 100mL/min, denfending oil viscosity is 300kcSt, and the cement ratio is:
Video 1: C=4.4% for the viscous fingering experiment;
Video 2: C=1.2% for the fracturing with leak-off experiment.