EGU2020-21633
https://doi.org/10.5194/egusphere-egu2020-21633
EGU General Assembly 2020
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Lessons learned from injection into sedimentary geothermal aquifers

Maren Brehme1,2, Abel Marko2, Santiago Aldaz2, Guido Blöcher2, and Ernst Huenges2
Maren Brehme et al.
  • 1TU Delft, Civil Engineering and Geosciences, Department of Geoscience and Engineering, Netherlands (m.brehme@tudelft.nl)
  • 2Helmholtz Center Potsdam, German Reseach Center for Geosciences, Section Geoenergy, Germany

Reasons for injectivity decline were investigated at different geothermal sites in Europe. Due to low injectivities, production rates have to be reduced and the site faces negative commercial implications. In addition to historical operation data, fluid and rock samples were investigated in the laboratory. Analysis and experiments focus on physical, chemical and biological processes and their interaction. Results show different processes being responsible for injection-triggered occlusion of flow pathways, e.g. fines migration, precipitation, micro-biological activity, aquifer properties, corrosion or O2 inflow.

Lessons learned will be shown, from preparation of large-scale projects, from monitoring programmes towards sustainable operation.

Activities are taking place in the frame of the DESTRESS project. The DESTRESS project has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement No 691728.

How to cite: Brehme, M., Marko, A., Aldaz, S., Blöcher, G., and Huenges, E.: Lessons learned from injection into sedimentary geothermal aquifers, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-21633, https://doi.org/10.5194/egusphere-egu2020-21633, 2020.