Continuous/discrete geochemical monitoring of CO2 natural analogues and of Diffuse Degassing Structures (DDS): Hints for CO2 storage sites geochemical monitoring protocol

Quattrocchi, F.; Cantucci, Barbara; Cinti, D.; Galli, Gianfranco; Pizzino, L.; Sciarra, Alessandra; Voltattorni, N.

doi:10.1016/j.egypro.2009.01.278

Cited by 19 publications

(8 citation statements)

References 12 publications

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“…Such average values (<100 g/m 2 day) fit those estimated in other Italian sites (Chiodini et al, 1995(Chiodini et al, , 1998. No hints of deep degassing can be inferred for the study area, as in general has been observed in some DDS throughout Italy (Chiodini et al, 1995(Chiodini et al, , 1998(Chiodini et al, , 2008Chiodini and Frondini, 2001;Cardellini et al, 2003;Voltattorni et al, 2009;Quattrocchi et al, 2009Quattrocchi et al, , 2010Quattrocchi et al, , 2011. Neither a particular trend of /CO 2 enrichment, nor evident alignment of anomalies has been revealed during this survey, discounting any hypothesis of deeply-derived leakages in the area (Evans et al, 2001).…”

Section: Co 2 and Ch 4 Flux Measurementssupporting

confidence: 71%

Geochemistry of shallow aquifers and soil gas surveys in a feasibility study at the Rivara natural gas storage site (Po Plain, Northern Italy)

Sciarra

Cinti

Pizzino

et al. 2013

Applied Geochemistry

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Section: Co 2 and Ch 4 Flux Measurementssupporting

confidence: 71%

Geochemistry of shallow aquifers and soil gas surveys in a feasibility study at the Rivara natural gas storage site (Po Plain, Northern Italy)

Sciarra

Cinti

Pizzino

et al. 2013

Applied Geochemistry

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“…In general, potential leakage can be detected by a number of methodologies, including fluid geochemistry, geophysics and biotracers. One of the conventional techniques is the mapping of soil gas fluxes by using an accumulation chamber during the operational and closure stages, comparing the data with the background fluxes (baseline maps) . The combined results from modeling, experimental injection and natural system observations suggest that the detection of hot spots can be extremely difficult due to its small emission areas.…”

Section: Discussionmentioning

confidence: 99%

Experimental and numerical modeling of CO₂ leakage in the vadose zone

Gasparini

Crédoz²,

Grandía

et al. 2015

Greenhouse Gases

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This study presents the experimental and modeling results of CO2 injection and transport in the vadose zone performed in PISCO2 facilities at the ES.CO2 center in Ponferrada (North Spain). During 46 days of experiments, 62.10 kg of CO2 were injected through 16 micro‐injectors in a 35 m3 experimental unit filled with sandy material. Monitoring and mapping of surface CO2 flux were performed periodically to assess the evolution of CO2 migration through the soil and to the atmosphere. Numerical simulations were run using TOUGH2 code with EOS7CA research module considering two phases (gas and liquid) and three components (H2O, CO2, air). Two layers (sand, gravel) and atmosphere boundary were implemented taking into account heterogeneous soils, homogeneous soil, rainfall, temperature, and liquid saturation to allow a better understanding of CO2 behavior in the vadose zone. This combined experimental and modeling approach shows that CO2 leakage in the vadose zone quickly comes out through preferential migration pathways and spots with the ranges of fluxes in the ground/surface interface from 2.5 to 600 g·m−2·day−1. This gas channeling is mainly related to soil compaction and climatic perturbation. This has significant implications for design‐adapted detection and monitoring strategies of early leakage in commercial CO2 storage. © 2015 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…The strong natural background variability – both in space and time – complicates the determination of base levels for the determination of anomalies. Fluxes of natural CO 2 sources, for example, differ by five to six orders of magnitude within a region . This wide range is a challenge in itself for sampling and monitoring instruments.…”

Section: Geochemical Monitoring Challengesmentioning

confidence: 99%

“…Fluxes of natural CO 2 sources, for example, diff er by fi ve to six orders of magnitude within a region. 17,18,21,51 Th is wide range is a challenge in itself for sampling and monitoring instruments. No single method will be able to cover this entire spectrum.…”

Section: Near-surface Monitoring Of Geochemical Anomaliesmentioning

confidence: 99%

Tasks and challenges of geochemical monitoring

May

Waldmann

2013

Greenhouse Gases

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A variety of monitoring tools are available for the various purposes of supervision and verification of underground geological CO2 storage. Geophysical tools can provide an indirect indication of the migration of substances in the subsurface or leakage through overburden. Geochemical techniques have to be applied though for verification of the nature of substances involved. Chemical species may be indicators for storage processes. Some can be harmful to the environment outside of the storage complex and thus appropriate monitoring of affected or endangered environments may be required. Natural CO2 reservoirs, CO2‐rich groundwater, and saline springs can be used to study fluid transport processes that could be similar to the migration and leakage associated with underground CO2 storage. Natural sites have been used for testing monitoring tools and learning about natural background variations. Experience gained from natural analogs and from pilot CO2 storage monitoring reveals the potential and limitations of chemical monitoring methods. Based on these experiences, the use of baseline functions and different thresholds are recommended in order to optimize detection and quantification of geochemical deviations from variable backgrounds. Chemical monitoring tools have to be incorporated into comprehensive concepts for CO2 storage monitoring. © 2013 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Continuous/discrete geochemical monitoring of CO2 natural analogues and of Diffuse Degassing Structures (DDS): Hints for CO2 storage sites geochemical monitoring protocol

Cited by 19 publications

References 12 publications

Geochemistry of shallow aquifers and soil gas surveys in a feasibility study at the Rivara natural gas storage site (Po Plain, Northern Italy)

Geochemistry of shallow aquifers and soil gas surveys in a feasibility study at the Rivara natural gas storage site (Po Plain, Northern Italy)

Experimental and numerical modeling of CO₂ leakage in the vadose zone

Tasks and challenges of geochemical monitoring

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Continuous/discrete geochemical monitoring of CO2 natural analogues and of Diffuse Degassing Structures (DDS): Hints for CO2 storage sites geochemical monitoring protocol

Cited by 19 publications

References 12 publications

Geochemistry of shallow aquifers and soil gas surveys in a feasibility study at the Rivara natural gas storage site (Po Plain, Northern Italy)

Geochemistry of shallow aquifers and soil gas surveys in a feasibility study at the Rivara natural gas storage site (Po Plain, Northern Italy)

Experimental and numerical modeling of CO2 leakage in the vadose zone

Tasks and challenges of geochemical monitoring

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Product

Resources

About

Experimental and numerical modeling of CO₂ leakage in the vadose zone