An Open Source Coupling Algorithm With Applications Towards CO2 Storage Modelling

We present here the way to bring together two open source modellers, PhreeqC and Elmer, with disjunctive application fields. They are gathered in a single environment to enable multi-component, reactive solute transport studies in threedimensional saturated/ unsaturated ground-water flow systems. The choice of Python as programming environment is explained, the way the tools become so called Python modules is presented. Based on Open Source, it enables the study of natural and contaminated ground-water flow systems at a variety of scales ranging from laboratory experiments to local and regional field scales. Two illustrative examples are given. The first one is considering dissolution/precipitation phenomena in the near field of a geothermal injection well. The second study is considering at a laboratory scale the interaction of a CO2 brine with a Calcite plug, that one is directly issued from the CO2 application field.