Research Article

Simulation and Analysis of Long-Term CO2 Trapping for the Shenhua CCS Demonstration Project in the Ordos Basin

Table 2

Aqueous concentrations of in situ water [26, 27, 32] and initial aqueous concentrations for simulations.

ComponentsLiujiagouShiqianfengShihezi
(mg/L)(mol/kg H2O)(mg/L)(mol/kg H2O)(mg/L)(mol/kg H2O)

Na+78161.0945604.19 × 10−123561.97 × 10−1
Ca2+14511.021.32 × 10−264505.66 × 10−21067.332.70 × 10−5
Mg2+894.67.09 × 10−7198.725.59 × 10−134.472.25 × 10−5
K+34.156.84 × 10−524.4531.82 × 10−376.422.87 × 10−5
Fe2+2.241.02 × 10−419.041.25 × 10−527.479.52 × 10−11
Cl-39739.841.12179405.06 × 10−15339.341.50 × 10−1
2075.013.93 × 10−419401.85 × 10−246.282.26 × 10−7
25.221.77 × 10−356.8526.50 × 10−4520.264.57 × 10−2
0.18451.32 × 10−80.003242.77 × 10−80.00577.59 × 10−8
SiO2(aq)1.185.15 × 10−47085.89 × 10−419.56.63 × 10−4
pH7.036.687.92
Temperature55°C62°C67°C

Note. Data under mg/L are aqueous concentrations of in situ water; data under mol/kg H2O are the initial aqueous concentrations for simulations.