fig4
![Sodium nanofluid for efficient oil recovery in heavy oil and oil sand reservoirs](https://image.oaes.cc/975d2b0d-d738-4ef0-8e4d-df8fe4f548b9/4305.fig.4.jpg)
Figure 4. (A) Mixture of 1 g heavy oil, 40 mg sodium nanoparticles dispersed in 0.2 mL silicone oil, and 1 mL brine containing 5.66 wt.% NaCl. (B) Optical image of the emulsion formed by the heavy oil, sodium nanofluid, and brine. Inset: photograph of the emulsion sample.