A Geochemical Model of Fluids and Mineral Interactions for Deep Hydrocarbon Reservoirs

Figure 6

Molality of elements Ca and Mg dissolved in water varying with depth (with sodium chlorite molality 0). Yellow line represents the case of pure CH₄ of gas in the system. Red lines with dots represent results from fluid-dolomite systems (with gas composition CO₂ : CH₄ = 1 : 9 in mole). Blue line represents results from fluid-calcite systems (with gas composition CO₂ : CH₄ = 1 : 9 in mole).