**Table 2.**

*Nano- and Microencapsulation - Techniques and Applications*

**242**

*2.1.3 Core samples*

*Salt composition for formation brine.*

**Figure 3.**

**Figure 2.**

*60°C.*

**Table 1.**

*(b) at 20 nm scale.*

Diffraction (XRD) test.

Buff Berea cores of 3.8 cm in diameter and 7.5 cm in length (and 2 sets of core with 14.0 cm in length), permeability range between 200 and 400 mD that contained mixture of clays were used in this study. Five sets of core flood tests were conducted and details of core properties assigned for each experiment are listed in **Table 2**. **Table 3** shows the Buff Berea core detail mineralogy measured by X-Ray

*Image of 0.05% NPN-ST under transmission electron microscopy (TEM): (a) at 100 nm scale and* 

*Particle size and visual observation of NPN-ST at initial and after 24 hours aged at room temperature and* 

**Salts Weight for 1 L (g)** NaCl 20.92 KCl 0.31 MgCl2.6H2O 0.08 CaCl2 0.10

*Buff Berea core properties.*


#### **Table 3.**

*Buff Berea core X-ray diffraction (XRD) data.*
