Geochemical Characteristics of Formation Water in Carbonate Reservoirs and Its Indication to Hydrocarbon Accumulation

Figure 12

Correlation between geochemical properties of formation water and gas/water well distribution.

(a) Na⁺/Cl⁻

(b) Mg²⁺/Ca²⁺

(c)

(d) (Cl⁻-Na⁺)/Mg²⁺