Gas-Water-Rock Interactions Induced by Reservoir Exploitation, CO2 Sequestration, and Other Geological Storage

Brosse, É.; Bildstein, Olivier; Swennen, Rudy

doi:10.2516/ogst:2005002

Cited by 10 publications

(2 citation statements)

References 42 publications

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“…Consequently, the effect of the CO 2 dissolved in pore fluids on the host lithologies has becoming, in the last decade, a fertile field of investigation (e.g. Baines & Worden 2004;Brosse et al 2005;Czernichowski-Lauriol et al 2006;Pauwels et al 2007 and references therein).…”

Section: Introductionmentioning

confidence: 99%

Diagenesis versus hydrothermalism and fluid–rock interaction within the Tuscan Nappe of the Monte Amiata CO₂‐rich geothermal area (Italy)

2013

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In southern Tuscany (central Italy), deep to shallow geothermal systems were active since the Pleistocene and comprise fluids carrying variable amounts of CO2. The Monte Amiata geothermal fields include two main reservoirs: a deep one located in the Palaeozoic metamorphic succession (1300–3000 m deep) belonging to the Tuscan metamorphic ‘basement’ and a shallow one hosted in the Mesozoic sedimentary succession (500–1000 m deep) belonging to the Tuscan Nappe. Multiple sets of calcite veins were investigated in some outcrops of the Tuscan Nappe succession exposed in the Monte Amiata area and surroundings. Two main fluid systems were characterized: the former related to combined diagenetic syn‐tectonic processes from highly saline fluids after interaction with the Late Triassic evaporites (Burano Fm) and the latter related to a fossil geothermal system, Pleistocene in age, fed by low‐salinity meteoric fluids, carrying CO2, radiogenic Sr and heavy O isotopes after interaction with the subsurface rocks. Comparison with the present‐day hydrothermal fluids allowed to sketch the thermal evolution of the system from past to present. Geochemical data proved that portions of the vein–host rocks were reset after interaction with CO2‐rich fluids circulating in the past. Consequently, textural and mineralogical changes are expected to have occurred with respect to the undisturbed rock masses. Understanding these modifications, their location and extension, is a prerequisite to construct (i) geochemical models addressed to the comprehension of the diagenesis induced in sediments after long‐term CO2 storage; and (ii) geological models applied to the prediction of rock heterogeneity distribution within the upper reservoirs, characterizing the shallow (500–1500 m) geothermal systems of southern Tuscany.

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Section: Introductionmentioning

confidence: 99%

Diagenesis versus hydrothermalism and fluid–rock interaction within the Tuscan Nappe of the Monte Amiata CO₂‐rich geothermal area (Italy)

2013

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“…In addition, coring is not performed, giving little access to petrophysical or petrographical description. Low permeability formations acting as barriers have been studied in detail for nuclear waste storage purposes, and in this case, the scientific issues are very similar [5,6] although the time scales are larger for nuclear waste problems and perfect confinement is required. However, linking these two problems may be confusing in terms of communication and public acceptance.…”

Section: Introductionmentioning

confidence: 99%

Evaluating Sealing Efficiency of Caprocks for CO₂Storage: an Overview of the Geocarbone-Integrity Program and Results

Fleury

Pironon

Nindre

et al. 2010

Oil Gas Sci. Technol. – Rev. IFP

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Résumé -Évaluation de l'intégrité des couvertures d'un stockage de CO 2 : un aperçu du programme Géocarbone-Intégrité et de ses résultats -Un aperçu du programme et des résultats du projet multipartenaire Géocarbone-Intégrité est donné. Il concerne le développement de méthodes expérimentales et numériques pour évaluer l'intégrité d'un stockage de CO 2 . Les critères essentiels d'une couverture sont l'épaisseur de la formation et sa perméabilité. Une migration locale et limitée du CO 2 dans la couverture due à une pression capillaire d'entrée insuffisante est étudiée dans ce travail. À grande échelle, des profils sismiques sont nécessaires pour caractériser la continuité d'une couverture. Quand on dispose de données de puits, des critères simples pour estimer l'argilosité peuvent être utilisés. On montre également que les techniques de lithosismique peuvent être appliquées aux couvertures. Pour les formations considérées, nous n'avons pas observé au laboratoire de réactivité géochimique importante, ni d'effet marquant sur les propriétés mécaniques. Des simulations hydromécaniques à grande échelle montrent que les critères de rupture ou de réactivation de fractures préexistantes ne sont pas satisfaits. Des simulations de transport réactif par diffusion et écoulement diphasique dans la couverture montrent une migration du CO 2 sur une dizaine de mètres au plus et une baisse de la porosité par précipitation, et localement une augmentation de la porosité par dissolution. Oil & Gas Science and Technology -Rev. IFP, Vol. 65 (2010) Abstract -Evaluating Sealing Efficiency of Caprocks for CO 2 Storage: an Overview of the Geocarbone-Integrity Program and Results -An overview of the three-year program and results of the Geocarbone-Integrity French project is given. It focused on the development of experimental and

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Βedrock instability of underground storage systems in the Czech Republic, Central Europe

et al. 2016

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Gas-Water-Rock Interactions Induced by Reservoir Exploitation, CO2 Sequestration, and Other Geological Storage

Cited by 10 publications

References 42 publications

Diagenesis versus hydrothermalism and fluid–rock interaction within the Tuscan Nappe of the Monte Amiata CO₂‐rich geothermal area (Italy)

Diagenesis versus hydrothermalism and fluid–rock interaction within the Tuscan Nappe of the Monte Amiata CO₂‐rich geothermal area (Italy)

Evaluating Sealing Efficiency of Caprocks for CO₂Storage: an Overview of the Geocarbone-Integrity Program and Results

Βedrock instability of underground storage systems in the Czech Republic, Central Europe

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Gas-Water-Rock Interactions Induced by Reservoir Exploitation, CO2 Sequestration, and Other Geological Storage

Cited by 10 publications

References 42 publications

Diagenesis versus hydrothermalism and fluid–rock interaction within the Tuscan Nappe of the Monte Amiata CO2‐rich geothermal area (Italy)

Diagenesis versus hydrothermalism and fluid–rock interaction within the Tuscan Nappe of the Monte Amiata CO2‐rich geothermal area (Italy)

Evaluating Sealing Efficiency of Caprocks for CO2Storage: an Overview of the Geocarbone-Integrity Program and Results

Βedrock instability of underground storage systems in the Czech Republic, Central Europe

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Product

Resources

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Diagenesis versus hydrothermalism and fluid–rock interaction within the Tuscan Nappe of the Monte Amiata CO₂‐rich geothermal area (Italy)

Diagenesis versus hydrothermalism and fluid–rock interaction within the Tuscan Nappe of the Monte Amiata CO₂‐rich geothermal area (Italy)

Evaluating Sealing Efficiency of Caprocks for CO₂Storage: an Overview of the Geocarbone-Integrity Program and Results