Assessment of the sustainability of the lithium yield from the geothermal brine at the Bruchsal site

In order to quantify the fluid residence times in the reservoir under the production-relevant flow regimes, a tracer test will be conducted at the Bruchsal site. 'Spike' slug injection and 'outflow' sampling design is based on the artificial-tracer signals from the ongoing long-term monitoring campaign, which indicates the fluid turnover volumes in the range of ~1 to ~8 million m³ for the precursor flow regimes (according to the conservative estimations by a team of modelers at University of Goettingen). On-site monitoring and fluid sampling is secured by BESTEC and HYDROSION together with the operator's well-site team (EnBW).