Relationship between the Molecular Coil Dimension and the Energy Storage Modulus of Polymer Solution Configured with Oilfield-Produced Sewage

Figure 11

Distribution of residual oil after displacement with different Dh (pore-throat ratio 7.0). (a) Water flooding. (b) Dh = 159.7 nm. (c) Dh = 301.4 nm. (d) Dh = 327.8 nm.

(a)

(b)

(c)

(d)