The Characteristics of Oil Occurrence and Long-Distance Transportation due to Injected Fluid in Tight Oil Reservoirs

Table 1

The basic properties of formation water.

Cation, mg/L			Anion, mg/L			PH	Total salinity, mg/L	Density, g/cm^3	Type
Na^++K^+	Ca^2+	Mg^2+	Cl^−	SO4^2−	HCO3^−
3621	1782	12	7831	8	1300	6.0	14321	1.013	CaCl2