19–22 May 2026
Europe/Paris timezone

Surrogate Modeling of Heat Transport in Geothermal Reservoirs Using Graph Neural Networks and Transformers

20 May 2026, 15:35
1h 30m
Poster Presentation (MS15) Machine Learning in Porous Media Poster

Speaker

Mr Reza Najafi-Silab

Description

We present a physics-aware deep learning framework for predicting heat flow in heterogeneous geothermal reservoirs. The proposed approach integrates graph neural networks (GNNs) with Transformer-based temporal modeling to serve as a fast and accurate surrogate for conventional reservoir simulators. Spatial representations are constructed through coefficient-aware algebraic multigrid (AMG) coarsening, enabling physics-informed tokenization of heterogeneous permeability and porosity fields on graphs. Temporal evolution is modeled in a latent space using a Transformer architecture, allowing uniform long-term time-step prediction under realistic operational conditions. A dataset of two-dimensional synthetic geothermal reservoir simulations is generated using the MATLAB Reservoir Simulation Toolbox (MRST), incorporating incompressible fluid flow and coupled conductive–advective heat transport in thermal doublet configurations with varying well placements. The proposed model is trained and evaluated against high-fidelity numerical simulation results. The results demonstrate that the GNN–Transformer framework accurately predicts thermal behaviour while achieving substantial reductions in computational cost compared to traditional simulators. These findings highlight the potential of deep learning surrogates for efficient geothermal reservoir forecasting, management, and optimization.

Country United Kingdom
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Authors

Mr Reza Najafi-Silab Hannah Menke (Heriot-Watt University) Florian Doster David Egya (Heriot-Watt University) Julien Maes (Heriot-Watt University)

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