Experimental and Numerical Simulation of the Injection of a CO2 Saturated Solution in a Carbonate Reservoir: Application to the CO2-DISSOLVED Concept Combining CO2 Geological Storage and Geothermal Heat Recovery - BRGM - Bureau de recherches géologiques et minières Access content directly
Journal Articles Energy Procedia Year : 2017

Experimental and Numerical Simulation of the Injection of a CO2 Saturated Solution in a Carbonate Reservoir: Application to the CO2-DISSOLVED Concept Combining CO2 Geological Storage and Geothermal Heat Recovery

Abstract

The CO2-DISSOLVED project explores the technical and economic feasibility of a promising concept combining CO2 storage and geothermal heat extraction. The CO2 released by low CO2 emitters is dissolved in the extracted brine via a doublet heat exchanger system. To study the effect to CO2-rich and thus acidic solution in the geothermal doublet, three reactive flow-through experiments mimicking the injection of a CO2 rich solution were performed. The chemical interactions in the near-injection well area between the reservoir rock, the cement phases and the acidic CO2-rich solution was investigated under geothermal reservoir conditions. The main results are i) the formation of a highly permeable network due to specific dissolution pattern called wormholes, and ii) the preservation of mechanical cohesion the cement/rock interface despite the cement carbonation. The experimental results are compared with those obtained by chemical-transport modelling with the coupled PHREEQC-MARTHE codes.
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hal-01599191 , version 1 (01-10-2017)

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Attribution - NonCommercial - NoDerivatives

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A. Randi, J. Sterpenich, Dominique Thiéry, Christophe Kervévan, J. Pironon, et al.. Experimental and Numerical Simulation of the Injection of a CO2 Saturated Solution in a Carbonate Reservoir: Application to the CO2-DISSOLVED Concept Combining CO2 Geological Storage and Geothermal Heat Recovery. Energy Procedia, 2017, 114, pp.2942 - 2956. ⟨10.1016/j.egypro.2017.03.1423⟩. ⟨hal-01599191⟩
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