Elsevier

Energy Procedia

Volume 63, 2014, Pages 5538-5543
Energy Procedia

GaMin’11 – an International Inter-laboratory Comparison for Geochemical CO2 - Saline Fluid - Mineral Interaction Experiments

https://doi.org/10.1016/j.egypro.2014.11.587Get rights and content
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Abstract

Due to the strong interest in geochemical CO2-fluid-rock interaction in the context of geological storage of CO2 a growing number of research groups have used a variety of different experimental ways to identify important geochemical dissolution or precipitation reactions and – if possible – quantify the rates and extent of mineral or rock alteration. In this inter-laboratory comparison the gas-fluid-mineral reactions of three samples of rock-forming minerals have been investigated by 11 experimental labs. The reported results point to robust identification of the major processes in the experiments by most groups. The dissolution rates derived from the changes in composition of the aqueous phase are consistent overall, but the variation could be reduced by using similar corrections for changing parameters in the reaction cells over time. The comparison of experimental setups and procedures as well as of data corrections identified potential improvements for future gas-fluid-rock studies.

Keywords

CCS
geochemical experiments
fluid-rock interaction
mineral dissolution
precipitation
method comparison

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Peer-review under responsibility of the Organizing Committee of GHGT-12.