Skip to Main content Skip to Navigation
Theses

Quantification expérimentale à l'échelle mésoscopique des processus réactionnels dans le cadre de l'injection de CO2 dans des roches carbonatées et silicatées

Abstract : In order to minimize CO2 atmospheric concentration, a solution consists in sequestrating CO2 in geological reservoirs. To estimate long term risks, it is necessary to quantify the couplings between reaction processes as well as structural and hydrodynamical modifications. We realised two experimental benches enabling injecting CO2-enriched-brine in conditions corresponding to in situ storage (T < 200 oC and P < 200 bar) and developed
an experimental protocol using X-Ray microtomography and fluid and rock analyses in order to measure the variations of physical and chemical parameters.
The study of carbonated reservoirs near the injection well, allows quantifying different k-phi relationships depending on the dissolution processes and triggered by the local fluid chemical composition and initials conditions. Away from the injection well, we observe carbonate precipitation decreasing the permeability. The study of fracturated caprock samples shows that alternative percolation of CO2-enriched-brine and CO2 gas increases the fracture permeability.
The study of silicated rocks indicates carbonate precipitation in zeolite sandstone and sintered dunite grains. Nevertheless, in zeolite sandstone we also observe the precipitation of clay particles located in the uid pathways which decrease strongly the permeability.
Document type :
Theses
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-00416408
Contributor : Linda Luquot <>
Submitted on : Monday, September 14, 2009 - 10:27:00 AM
Last modification on : Friday, April 5, 2019 - 8:14:39 PM
Long-term archiving on: : Tuesday, June 15, 2010 - 8:19:06 PM

Identifiers

  • HAL Id : tel-00416408, version 1

Collections

Citation

Linda Luquot. Quantification expérimentale à l'échelle mésoscopique des processus réactionnels dans le cadre de l'injection de CO2 dans des roches carbonatées et silicatées. Hydrologie. Université Montpellier II - Sciences et Techniques du Languedoc, 2008. Français. ⟨tel-00416408⟩

Share

Metrics

Record views

1249

Files downloads

232