Research Article
Numerical Investigation into the Impact of CO2-Water-Rock Interactions on CO2 Injectivity at the Shenhua CCS Demonstration Project, China
Table 3
Initial component concentrations of the formation water in the three formations.
| | Component | Concentration (mol/kg H2O) | | Liujiagou | Shiqianfeng | Shihezi |
| | Na+ | 1.09 | 4.19 × 10−1 | 1.97 × 10−1 | | Ca2+ | 1.32 × 10−2 | 5.66 × 10−2 | 2.70 × 10−5 | | Mg2+ | 7.09 × 10−7 | 5.59 × 10−13 | 2.25 × 10−5 | | K+ | 6.84 × 10−5 | 1.82 × 10−3 | 2.87 × 10−5 | | Fe2+ | 1.02 × 10−4 | 1.25 × 10−5 | 9.52 × 10−11 | | Cl- | 1.12 | 5.06 × 10−1 | 1.50 × 10−1 | | 3.93 × 10−4 | 1.85 × 10−2 | 2.26 × 10−7 | | 1.77 × 10−3 | 6.50 × 10−4 | 4.57 × 10−2 | | 1.32 × 10−8 | 2.77 × 10−8 | 7.59 × 10−8 | | SiO2 (aq) | 5.15 × 10−4 | 5.89 × 10−4 | 6.63 × 10−4 |
| | pH | 7.03 | 6.68 | 7.92 | | Temperature | 55°C | 62°C | 67°C |
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