EGS Collab Experiment 1: TOUGH2-CSM Simulation of Embedded Natural Fractures and Chemical Tracer Transport and Sorption


The EGS Collab SIGMA-V project is a multi-lab and university collaborative research project that is being undertaken at the Sanford Underground Research Facility (SURF) in South Dakota. The project consists of studying stimulation, fluid-flow, and heat transfer processes at a scale of 10-20 m, which is readily amenable to detailed characterization and monitoring. One objective of the project is to establish circulation from injector to producer by hydraulically fracturing the injector.

Data generated during these experiments is to be compared with predictions from coupled thermal, hydrological, mechanical, and chemical simulators. One such a simulator, TOUGH2-CSM, has been enhanced in order to simulate EGS Collab SIGMA-V project experiments. These modifications include adding tracers, the capability to model tracer sorption, and an embedded fracture formulation.

A set of example problems validate our conservative tracer transport and sorption formulations. We then simulated tracer transport and thermal breakthrough for the first EGS Collab SIGMA-V experiment.

This dataset includes the TOUGH2-CSM input and output files associated with the thermal and tracer simulations. A conference paper is included for additional context.

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Additional Info

DOE Project Name: EGS Collab
DOE Project Number: EE0032708
DOE Project Lead: Lauren Boyd
DOI: 10.15121/1525476
Last Updated: over a year ago
Data from June, 2019
Submitted Jun 7, 2019


National Renewable Energy Laboratory


Publicly accessible License 


Bud Johnston
National Renewable Energy Laboratory
Phillip Winterfield
Colorado School of Mines
Koenraad Beckers
Yu-Shu Wu
Colorado School of Mines


geothermal, energy, EGS, EGS Collab, TOUGH2, simulation, enhanced geothermal systems, SURF, Sanford Underground Research Facility, reservoir, modeling, tracer, natural, fractures, fracturing, chemical, SIGMA-V, thermal, temperature, heat flow, fluid flow, monitoring, hydraulic, circulation, injection, injector, TOUGH2-CSM, sorption, transfer, breakthrough


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