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Apports de la géochimie des gaz rares à la surveillance des sites de séquestration géologique de CO2

Abstract : According to the last IPCC (Intergovernmental Panel on Climate Change) report, a probability of 90 % can be now established for the responsibility of the anthropogenic CO2 emissions for the global climate change observed since the beginning of the 20th century.

To reduce these emissions and keep producing energy from coal, oil or gas combustions, CO2 could be stored in geological reservoirs like aquifers, coal beds, and depleted oil or gas fields. Storing CO2 in geological formations implies to control the efficiency and to survey the integrity of the storages, in order to be able to detect the possible leaks as fast as possible.

Here, we study the feasibility of a geochemical monitoring through noble gas geochemistry. We present (1) the development of a new analytical line, Garodiox, developed to extract quantitatively noble gas from water samples, (2) the testing of Garodiox on samples from a natural CO2 storage analogue (Pavin lake, France) and (3) the results of a first field work on a natural CO2 accumulation (Montmiral, France).

The results we obtain and the conclusions we draw, highlight the interest of the geochemical monitoring we suggest.
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https://tel.archives-ouvertes.fr/tel-00269264
Contributor : Stéphane Lafortune <>
Submitted on : Wednesday, April 2, 2008 - 3:38:38 PM
Last modification on : Monday, December 14, 2020 - 9:52:35 AM
Long-term archiving on: : Thursday, May 20, 2010 - 8:39:22 PM

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  • HAL Id : tel-00269264, version 1

Citation

Stéphane Lafortune. Apports de la géochimie des gaz rares à la surveillance des sites de séquestration géologique de CO2. Géochimie. Institut de physique du globe de paris - IPGP, 2007. Français. ⟨tel-00269264⟩

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