Laboratory-scale interaction between CO dos-rich brine and reservoir rocks (Limestone and sandstone)
In the laboratory, synthetically fractured cores of limestone and sandstone were reacted with CO2-rich brines at flow rates ranging from 0.2 to 60 mL h−1 and 80 bar pCO2 and 60 °C (supercritical CO2 conditions). Interaction between the sulfate-CO2-rich brines and the primary minerals of the rock caused significant permeability variations. Calcite dissolution was clearly identified and in some case associated with gypsum (or anhydrite) precipitation.
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| Main Authors: | , , , |
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| Format: | artículo biblioteca |
| Published: |
Elsevier
2013
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| Subjects: | Limestone, Dissolution, Precipitation, Permeability, Brine, CO2 sequestration, |
| Online Access: | http://hdl.handle.net/10261/93046 |
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| Summary: | In the laboratory, synthetically fractured cores of limestone and sandstone were reacted with CO2-rich brines at flow rates ranging from 0.2 to 60 mL h−1 and 80 bar pCO2 and 60 °C (supercritical CO2 conditions). Interaction between the sulfate-CO2-rich brines and the primary minerals of the rock caused significant permeability variations. Calcite dissolution was clearly identified and in some case associated with gypsum (or anhydrite) precipitation. |
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