Influence of Surfactant Structure on the Stability of Water-in-Oil Emulsions under High-Temperature High-Salinity Conditions

Table 2

Chemical analysis of water used in the study.

Ion, ppm	Water type concentration, mg·L^−1
	Brine formation	Sea water
Na^+	59,300	18,300
Ca^2+	23,400	650
Mg^2+	1,510	2,083
	110	4,290
Cl^-	137,000	32,200
	353	120
Total dissolved	221,673	57,642

by addition.