2009
DOI: 10.1038/nature07852
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Solubility trapping in formation water as dominant CO2 sink in natural gas fields

Abstract: Injecting CO(2) into deep geological strata is proposed as a safe and economically favourable means of storing CO(2) captured from industrial point sources. It is difficult, however, to assess the long-term consequences of CO(2) flooding in the subsurface from decadal observations of existing disposal sites. Both the site design and long-term safety modelling critically depend on how and where CO(2) will be stored in the site over its lifetime. Within a geological storage site, the injected CO(2) can dissolve … Show more

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Cited by 429 publications
(345 citation statements)
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“…The high solubility of CO 2 makes dissolution one of the main trapping mechanisms in the long term. For instance, it has been observed in carbonate-dominated reservoirs containing naturally occurring CO 2 that up to 90% of this CO 2 can dissolve at the millennial timescale (the remaining 10% would be trapped in precipitated minerals) (60). CO 2 dissolution also operates over relatively short timescales and provides a significant storage capacity (61,62).…”
Section: Overpressure Evolutionmentioning
confidence: 99%
“…The high solubility of CO 2 makes dissolution one of the main trapping mechanisms in the long term. For instance, it has been observed in carbonate-dominated reservoirs containing naturally occurring CO 2 that up to 90% of this CO 2 can dissolve at the millennial timescale (the remaining 10% would be trapped in precipitated minerals) (60). CO 2 dissolution also operates over relatively short timescales and provides a significant storage capacity (61,62).…”
Section: Overpressure Evolutionmentioning
confidence: 99%
“…One of the primary mechanisms for longer-term storage is the dissolution of CO 2 into the underlying ambient brine (Orr 2009), which forms a dense solute that can lead to downward convection. Geochemical field observations in natural CO 2 reservoirs suggest that convective dissolution provides a very significant and persistent mechanism for the transport of CO 2 (Gilfillan et al 2009). …”
Section: Introductionmentioning
confidence: 99%
“…The sequestration capacity, long-term CO 2 behavior in receptor formations, and the quantification of possible CO 2 leaks are the main concerns [2,4,9,10], and there remains a need to study the potential mobility of CO 2 dissolved in brines over a wide range of spatial and temporal scales [4,9,11], the CO 2 concentration distribution in saline aquifers, as well as the density distribution in geological media [8]. This highlights the significance of research on CO 2 dissolution and the mass transfer of CO 2 dissolved in brines.…”
Section: Introductionmentioning
confidence: 99%