The CO2-Vadose project: Time-lapse geoelectrical monitoring during CO2 diffusion in the carbonate vadose zone

Roux, Olivier Le; Cohen, Grégory; Loisy, Corinne; Laveuf, Cédric; Delaplace, Philippe; Magnier, Caroline; Rouchon, Virgile; Cérepi, Adrian; García, Bruno

doi:10.1016/j.ijggc.2013.03.016

Cited by 17 publications

(13 citation statements)

References 29 publications

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“…The last aspect to investigate is the impact on the vadose zone: a field study was carried out in an old quarry of the St-Emilion village (France) but with no aspect concerning the behavior of TE in those specific hydrologic conditions Garcia et al, 2013;Le Roux et al, 2013;Loisy et al, 2013).…”

Section: Extrapolation To a Co 2 Storage Context And Possiblementioning

confidence: 99%

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions

Auffray

García

Lienemann

et al. 2016

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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-Some key points still prevent the full development of geological carbon sequestration in underground formations, especially concerning the assessment of the integrity of such storage. Indeed, the consequences of gas injection on chemistry and petrophysical properties are still much discussed in the scientific community, and are still not well known at either laboratory or field scale. In this article, the results of an experimental study about the mobilization of Trace Elements (TE) during CO 2 injection in a reservoir are presented. The experimental conditions range from typical storage formation conditions (90 bar, supercritical CO 2 ) to shallower conditions (60 and 30 bar, CO 2 as gas phase), and consider the dissolution of the two carbonates, coupled with the sorption of an initial concentration of 10 À5 M of Zn(II), and the consequent release in solution of Mn(II) and Sr(II). The investigation goes beyond the sole behavior of TE in the storage conditions: it presents the specific behavior of each element with respect to the pressure and the natural carbonate considered, showing that different equilibrium concentrations are to be expected if a fluid with a given concentration of TE leaks to an upper formation. Even though sorption is evidenced, it does not balance the amount of TE released by the dissolution process. The increase in porosity is clearly evidenced as a linear function of the CO 2 pressure imposed for the St-Emilion carbonate. For the Lavoux carbonate, this trend is not confirmed by the 90 bar experiment. A preferential dissolution of the bigger family of pores from the preexisting porosity is observed in one of the samples (Lavoux carbonate) while the second one (St-Emilion carbonate) presents a newly-formed family of pores. Both reacted samples evidence that the pore network evolves toward a tubular network type.

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Section: Extrapolation To a Co 2 Storage Context And Possiblementioning

confidence: 99%

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions

Auffray

García

Lienemann

et al. 2016

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…The experimental site described here was already part of a previous project called "CO 2 Vadose" Loisy et al, 2013;Le Roux et al, 2013). Previous studies were dedicated to (1) baseline CO 2 monitoring strategy , (2) an experiment of CO 2 injection into an underground quarry at 8 m depth , (3) the use of numerical modeling to perform monitoring strategy , and (4) the use geoelectrical signal to monitor CO 2 diffusion .…”

Section: Geological and Environmental Settingmentioning

confidence: 99%

“…The water saturation was determined by the desaturation technique using semi-permeable capillary diaphragms (ceramic membranes). The results showed that porosity varied between 28.5 Le Roux et al, 2013) was performed (b) North-South vertical profile of the vadose zone with its geological features. The sub-surface of the experimental site is composed by soil and altered limestone from the surface to nearly 0.7 m depth, massive limestone from 0.7 m to 3.7 m depth, and clay from 3.7 m depth.…”

Section: Geological and Environmental Settingmentioning

confidence: 99%

The DEMO-CO2 project: A vadose zone CO2 and tracer leakage field experiment

Rillard

Loisy

Roux

et al. 2015

International Journal of Greenhouse Gas Control

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“…CO 2 dissolves partly into the pore water and interacts with the surrounding minerals promoting dissolution/precipitation reactions (Bachu et al, ). Two well‐known geophysical galvanometric methods can be used to monitor fluid flow in shallow or deep formations, namely, the self‐potential (SP) method and the electrical conductivity/resistivity tomography methods (Le Roux et al, ; Zhou et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…A low‐frequency current is injected in the ground and the resulting field is recorded in order to reconstruct the conductivity/resistivity distribution of the subsurface. This method is already used in the field to identify CO 2 leakages (Le Roux et al, ; Zhou et al, ). Recent studies showed the ability of electrical conductivity monitoring to detect variations caused by CO 2 flowing in porous media (Giese et al, ; Kiessling et al, ; Schmidt‐Hattenberger et al, ; Strazisar et al, ; Würdemann et al, ; Zhou et al, ).…”

Section: Introductionmentioning

confidence: 99%

Influence of CO₂ on the Electrical Conductivity and Streaming Potential of Carbonate Rocks

et al. 2019

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Minimally intrusive geophysical methods are required to monitor CO 2 leakages from underground storage reservoirs. We investigate the impact of gaseous CO 2 on both electrical conductivity and electrokinetic properties of two limestones during their drainage. These data are contrasted with measurements performed on one clay-free sandstone. The initial NaCl brine concentrations before drainage (from 8.5 to 17.1 mMol/L) correspond to the limit between freshwater and slightly brackish water. These values are representative to saturated brine formations inside which CO 2 can be stored. Using these water salinities, the surface conductivity of the samples represents less than 5% of the overall electrical conductivity. A CO 2 release leads to an increase of the electrical conductivity of the rock during drainage in limestones and no change in sandstone. This increase in the electrical conductivity is due to the dissolution of calcite with the concomitant release of Ca 2+ and HCO 3 − in the pore water. It is not due to the CO 2 dissociation in the pore water in the pore pressure range 0-0.5 MPa and at a temperature of T = 20°C. The measurements of the streaming potential show a substantial decrease of the streaming potential coupling coefficient and zeta potential magnitudes after a CO 2 release in carbonates. This observation is explained by the increase of the ionic strength of the pore water in the course of the experiment. This change can be used, in turn, to determine calcite dissolution rates from the measurement of the electrokinetic properties.

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The CO2-Vadose project: Time-lapse geoelectrical monitoring during CO2 diffusion in the carbonate vadose zone

Cited by 17 publications

References 29 publications

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions

The DEMO-CO2 project: A vadose zone CO2 and tracer leakage field experiment

Influence of CO₂ on the Electrical Conductivity and Streaming Potential of Carbonate Rocks

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The CO2-Vadose project: Time-lapse geoelectrical monitoring during CO2 diffusion in the carbonate vadose zone

Cited by 17 publications

References 29 publications

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO2Storage Conditions

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO2Storage Conditions

The DEMO-CO2 project: A vadose zone CO2 and tracer leakage field experiment

Influence of CO2 on the Electrical Conductivity and Streaming Potential of Carbonate Rocks

Contact Info

Product

Resources

About

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions

Zn(II), Mn(II) and Sr(II) Behavior in a Natural Carbonate Reservoir System. Part II: Impact of Geological CO₂Storage Conditions

Influence of CO₂ on the Electrical Conductivity and Streaming Potential of Carbonate Rocks