Pore-Scale Imaging of the Oil Cluster Dynamic during Drainage and Imbibition Using In Situ X-Ray Microtomography

Figure 9

Morphologies and volumes of the five types of oil clusters after 1-PV water drainage in oil-wet plug: (a) clustered (volume = 6.07 × 10⁶ μm³); (b) multiporous (volume = 3.89 × 10⁵ μm³); (c) columnar (volume = 9.3 × 10⁴ μm³); (d) droplet (volume = 3.08 × 10³ μm³); (e) membranous (volume = 2.17 × 10³ μm³).

(a)

(b)

(c)

(d)

(e)