Table 4 Input parameters and calculated effective storage capacities of aquifers for CO2
From: Potential for deep geological sequestration of CO2 in Switzerland: a first appraisal
Aquifersa | Upper Marine Molasse | Haupt–rogenstein | Upper Muschelkalk | Malm–Lower Cretaceous |
|---|---|---|---|---|
Area with storage potential >0.6 (km2) | 172 | 1,095 | 2,088 | 1,554 |
Volume of aquifer (V aquifer) with storage potential >0.6 in depth interval 800–2,500 mb | ||||
 <30°C/km (m3) | 1.33 × 1010 | 6.35 × 1010 | 3.80 × 1010 | 5.53 × 1011 |
 30–35°C/km (m3) | 4.81 × 1010 | 3.11 × 1010 | 5.30 × 1010 | 5.50 × 1010 |
 >35°C/km (m3) | 1.28 × 1010 | 3.74 × 109 | 4.47 × 1010 | 3.99 × 1010 |
 Total (m3) | 7.43 × 1010 | 9.83 × 1010 | 1.36 × 1011 | 6.48 × 1011 |
 Total (km3) | 74.3 | 98.3 | 136 | 648 |
Mean interconnected porosity of aquifer \( \left( {\bar{\phi }} \right) \) (%)c | 12.5 | 8.5 | 8.7 | 5 |
Mean CO2 density \( \left( {\bar{\rho }} \right) \) in depth interval 800–2,500 md | ||||
 <30°C/km (kg/m3) | 740 | 740 | 740 | 740 |
 30–35°C/km (kg/m3) | 675 | 675 | 675 | 675 |
 >35°C/km (kg/m3) | 575 | 575 | 575 | 575 |
Lithology of aquifer (using available IEA-GHG typology)e | Alluvial fan sandstone | Peritidal limestone | Shallow shelf dolomite | Shallow shelf limestone |
Structure (attitude of bedding)e | 5° incline | 5° incline | 5° incline | 5° incline |
CO2 storage coefficient P10 (%)e | 4.60 | 4.99 | 4.99 | 5.52 |
5 CO2 storage coefficient P50 (%)e | 4.85 | 4.97 | 4.97 | 7.10 |
Mean of P10 and P50 coeffs. \( \left( {\bar{E}} \right) \) (%) | 4.7 | 5 | 5 | 6.3 |
Effective CO2 storage capacity | ||||
 \( M_{{{\text{CO}}_{ 2} ,{\text{eff}}}} \) calc. from Eq. 2 (Mt) | 251 | 240 | 708 | 1,479 |
 Mean \( M_{{{\text{CO}}_{ 2} , {\text{eff}}}} \)/square km (Mt/km2) | 1.45 | 0.22 | 0.34 | 0.95 |