Duration: 1 May 2026 – 30 April 2029

Project partners:

• Helmholtz Centre Dresden-Rossendorf (HZDR): Prof. Dr Cornelius Fischer (Co-ordinator)
• Friedrich Schiller University Jena (FSU): Prof. Dr Thorsten Schäfer, Dr Saeid Sadeghnejad
• Karlsruhe Institute of Technology (KIT): Prof. Dr Philipp Blum, PD Dr Kathrin Menberg
• University of Greifswald: Prof. Dr Laurence N. Warr, Dr Georg Grathoff
• University of Tübingen: Prof. Dr.-Ing. Olaf Cirpka, Dr Tao Yuan
• Freiberg University of Mining and Technology (TUBAF): Prof. Dr Christoph Butscher, Dr Reza Taherdangkoo

Various reactive processes in hydrothermal reservoirs lead to changes in their economic quality. Due to the dissolution, precipitation and rearrangement of mineral phases, rock permeability may decrease during exploitation, thereby impairing productivity. The aim of the LangRes consortium, funded by the BMFTR, is to better predict and optimise these processes using simulations.
To this end, a PINN model with an additional interface to a finite element (FE) model is being developed. The data are derived from laboratory experiments and simulations. These serve as training data and physical constraints.
The PINN is being developed in two stages. Initially, the model simulates geochemical reactions as well as the development of porosity and permeability based on PHREEQC reference data. It is then
extended to include the mobilisation and aggregation of fine particles. Following validation, the PINN is integrated into the finite element model to efficiently replace computationally intensive reaction-transport simulations. This reduces model complexity, increases computational efficiency and enables sensitivity and uncertainty analyses to optimise operational strategies in deep hydrothermal systems.

Further information can be found at: https://www.projektfoerderung-geo-meeresforschung.de/geowissenschaften/details?action=ShowForm&id=3761