Numerical modeling of fluid–rock chemical interactions at the supercritical CO2–liquid interface during CO2 injection into a carbonate reservoir, the Dogger aquifer (Paris Basin, France)

André, Laurent; Audigane, Pascal; Azaroual, Mohamed; Menjoz, A.

doi:10.1016/j.enconman.2007.01.006

Cited by 256 publications

(149 citation statements)

References 33 publications

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“…Flow/transport modelling shows that, except in the close vicinity of the injection point, the fluid substitution is only partial: in a homogeneous reservoir, the CO 2 saturation should vary from about 98% at 100 m from the injector ("dried" zone) to approximately 30% at 1 km, for 25 Mt of CO 2 injected in physical conditions typical of the Dogger in this area (André et al, 2007). Using formula (6) with n = 2, we can thus anticipate a bubble-to-host resistivity ratio ranging from 2500 in the dried zone to only 2 at 1 km from the injector.…”

Section: The 3d Co 2 Plumementioning

confidence: 99%

First Modelling Results of the EM Response of a CO₂Storage in the Paris Basin

Bourgeois

Girard

2010

Oil Gas Sci. Technol. – Rev. IFP

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Résumé -Premières modélisations de la réponse EM d'un stockage de CO 2 dans le bassin Parisien -Nous étudions la possibilité d'utiliser les méthodes électriques/EM pour surveiller l'injection de CO 2 supercritique à 1700 m de profondeur dans un aquifère salin du Bassin Parisien (Carbonates du Dogger). Nous démontrons d'abord l'intérêt théorique des méthodes de résistivité pour une telle surveillance à l'aide des lois fondamentales de la pétrophysique dans les roches sédimentaires poreuses, en supposant que le CO 2 supercritique est un isolant parfait. Diverses combinaisons de sources et de capteurs sont discutées et il est conclu que le dispositif le plus performant consiste en une source de type galvanique (injection de courant dans le sol à l'aide d'une paire d'électrodes A et B) et d'une grille de capteurs électriques (et peut-être magnétiques) à la surface du sol. Compte tenu de la profondeur et de la finesse des couches réservoir, l'injection du courant en profondeur est envisagée dans le but d'augmenter la densité de courant circulant dans la couche réservoir. L'injection ponctuelle à la profondeur du réservoir, dans une configuration de type « Mise À la Masse » (MAM), étant généralement impossible à cause de la présence de tubages métalliques dans les forages, nous avons étudié la possibilité d'utiliser ces mêmes tubages comme des longues électrodes distribuant le courant tout le long du forage. Ce type de source est dénommé « LEMAM » (Long Electrode Mise À la Masse), pour le distinguer du MAM conventionnel. Des simulations numériques sont présentées à la fois pour le dispositif LEMAM et pour le dispositif « rectangle » (RECT), lequel emploie une injection de courant ponctuelle à la surface du sol. Le modèle géoélectrique utilisé est basé sur une zone proche du champ pétrolier de Saint-Martin-de-Bossenay (SMB), au sud-est du Bassin Parisien. La couche réservoir considérée dans cette étude est la formation de l'« Oolithe Blanche » (Dogger) qui a une épaisseur de 75 m et se situe à une profondeur de 1700 m sous la surface du sol. Dans les modèles présentés, le panache de CO 2 est simplifié en une plaque horizontale carrée de 2 km de côté et de 70 m d'épaisseur flottant au toit de l'aquifère réservoir. Une saturation uniforme en CO 2 égale à 80 % a été adoptée dans la plaque, ce qui représente un contraste de résistivité de 25 par rapport à l'aquifère initial. Deux variantes du modèle avec des résistivités différentes pour l'aquifère sont comparées. Le cas d'une résistivité réaliste de 20 ohm.m donne une réponse électrique time-lapse inférieure au bruit de répétition estimé. Ce résultat décevant s'explique par le fait que la couche réservoir dans ce cas est loin d'être la plus conductrice du modèle ; par conséquent, elle est traversée seulement par une petite partie du courant injecté, d'où la faible réponse du CO 2 . Une deuxième variante avec une résistivité plus favorable que la réalité, mais parfaitement réaliste pour un aquifère salin (1 ohm.m), donne une réponse électrique timelapse de l'ordre de 6 % d...

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Section: The 3d Co 2 Plumementioning

confidence: 99%

First Modelling Results of the EM Response of a CO₂Storage in the Paris Basin

Bourgeois

Girard

2010

Oil Gas Sci. Technol. – Rev. IFP

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“…Laboratory experiments were done to characterize multiphase flow (courtesy of JF Lombard from IFP, see Appendix of André et al 2007). Data from several carbonate systems (Bennion and Bachu 2005) were plotted (Fig.6) for comparison.…”

Section: Multiphase Flowmentioning

confidence: 99%

“…Laboratory experiments were done to characterize multiphase flow (courtesy of JF Lombard from IFP, see Appendix of André et al 2007). …”

Section: Fig6mentioning

confidence: 99%

“…In a similar manner Audigane et al (2007) have conducted numerical modelling of CO 2 injection into an unconsolidated sandstone aquifer in the North Sea (Sleipner demonstration pilot, Norway) showing small mineral trapping and porosity modification after a 10000 year simulation.…”

Section: Introductionmentioning

confidence: 99%

“…Lagneau et al (2005), using a single phase approach, have calculated high pH drops (down to 3) in the Dogger aquifer conducting to complete dissolution of calcite 1 km around the injection point after a 10 000 -year simulation. André et al (2007) showed that a multiphase approach would significantly reduce porosity changes of the carbonated system (Dogger formation) assuming no geochemical reactions occurred between the rock minerals and supercritical CO 2 . Cunningham et al (2009) have drawn the same conclusions on a high dolomite aquifer situated in South Florida (USA).…”

Section: Introductionmentioning

confidence: 99%

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Modeling of CO2 Leakage up Through an Abandoned Well from Deep Saline Aquifer to Shallow Fresh Groundwaters

et al. 2011

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This article presents a numerical modeling application using the code TOUGHREACT of a leakage scenario occurring during a CO 2 geological storage performed in the Jurassic Dogger formation in the Paris Basin. This geological formation has been intensively used for geothermal purposes and is now under consideration as a site for the French national program of reducing greenhouse gas emissions and CO 2 geological storage. Albian sandstone, situated above the Dogger limestone is a major strategic potable water aquifer; the impacts of leaking CO 2 due to potential integrity failure have therefore to be investigated. The present case study illustrates both the capacity and the limitations of numerical tools to address such a critical issue.The physical and chemical processes simulated in this study have been restricted to:(i) supercritical CO 2 injection and storage within the Dogger reservoir aquifer, (ii) CO 2 upwards migration through the leakage zone represented as a 1D vertical porous medium to simulate the cement-rock formation interface in the abandoned well (iii) impacts on the Albian aquifer water quality in terms of chemical composition and the mineral phases representative of the porous rock by estimating fluid-rock interactions in both aquifers. 2Because of CPU time and memory constraints, approximation and simplification regarding the geometry of the geological structure, the mineralogical assemblages and the injection period (up to 5 years) have been applied to the system, resulting in limited analysis of the estimated impacts.The CO 2 migration rate and the quantity of CO 2 arriving as free gas and dissolving, firstly in the storage water and secondly in the water of the overlying aquifer, are calculated. CO 2 dissolution into the Dogger aquifer induces a pH drop from about 7.3 to 4.9 limited by calcite dissolution buffering. Glauconite present in the Albian aquifer also dissolves, causing an increase of the silicon and aluminium in solution and triggering the precipitation of kaolinite and quartz around the intrusion point. A sensitivity analysis of the leakage rate according to the location of the leaky well and the variability of the petro-physical properties of the reservoir, the leaky well zone and the Albian aquifers is also provided.

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Rapid porosity and permeability changes of calcareous sandstone due to CO₂‐enriched brine injection

Lamy-Chappuis

Angus

Fisher

et al. 2014

Geophysical Research Letters

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Reservoir injectivity and storage capacity are the main constraints for geologic CO 2 sequestration, subject to safety and economic considerations. Brine acidification following CO 2 dissolution leads to fluid-rock interactions that alter porosity and permeability, thereby affecting reservoir storage capacity and injectivity. Thus, we determined how efficiently CO 2 -enriched brines could dissolve calcite in sandstone cores and how this affects the petrophysical properties. During computerized tomography monitored flow-through reactor experiments, calcite dissolved at a rate largely determined by the rate of acid supply, even at high flow velocities which would be typical near an injection well. The porosity increase was accompanied by a significant increase in rock permeability, larger than that predicted using classical porosity-permeability models. This chemically driven petrophysical change might be optimized using injection parameters to maximize injectivity and storage.

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Numerical modeling of fluid–rock chemical interactions at the supercritical CO2–liquid interface during CO2 injection into a carbonate reservoir, the Dogger aquifer (Paris Basin, France)

Cited by 256 publications

References 33 publications

First Modelling Results of the EM Response of a CO₂Storage in the Paris Basin

First Modelling Results of the EM Response of a CO₂Storage in the Paris Basin

Modeling of CO2 Leakage up Through an Abandoned Well from Deep Saline Aquifer to Shallow Fresh Groundwaters

Rapid porosity and permeability changes of calcareous sandstone due to CO₂‐enriched brine injection

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Numerical modeling of fluid–rock chemical interactions at the supercritical CO2–liquid interface during CO2 injection into a carbonate reservoir, the Dogger aquifer (Paris Basin, France)

Cited by 256 publications

References 33 publications

First Modelling Results of the EM Response of a CO2Storage in the Paris Basin

First Modelling Results of the EM Response of a CO2Storage in the Paris Basin

Modeling of CO2 Leakage up Through an Abandoned Well from Deep Saline Aquifer to Shallow Fresh Groundwaters

Rapid porosity and permeability changes of calcareous sandstone due to CO2‐enriched brine injection

Contact Info

Product

Resources

About

First Modelling Results of the EM Response of a CO₂Storage in the Paris Basin

First Modelling Results of the EM Response of a CO₂Storage in the Paris Basin

Rapid porosity and permeability changes of calcareous sandstone due to CO₂‐enriched brine injection