Hydrodynamic invalidation of synformal traps for dissolved CO2
| Autor: | S.A. Stewart, L.A. Riddell |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Geology. 50:1121-1124 |
| ISSN: | 1943-2682 0091-7613 |
| DOI: | 10.1130/g50071.1 |
| Popis: | Reservoirs with the geometry of structural lows trap negatively buoyant fluids, mirroring the way structural highs trap positively buoyant fluids. In both scenarios, lateral flow of reservoir water alters the trapping geometry by causing fluid contacts to tilt. Tilt increases in proportion to hydraulic head gradient increases and the density contrast between the flowing and trapped fluids decreases. Positively buoyant, immiscible supercritical CO2 is at least 20% lighter than typical saline formation waters at CO2 subsurface storage pressures and temperatures, and would experience relatively low tilts |
| Databáze: | OpenAIRE |
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