Pore-Scale Investigation on the Plugging Behavior of Submicron-Sized Microspheres for Heterogeneous Porous Media with Higher Permeability

Figure 6

Water distribution inside the core sample of the same permeability (300 mD) after injection of microspheres with (a) 50 nm and (b) 800 nm particle size. “Before” denotes before microsphere injection and “after” denotes after microsphere injection. Microsphere concentration is 0.2%.

(a)

(b)