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

Description

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.

Resources

Name Format Description Link
47 Readme file describing input and output file naming conventions for TOUGH2-CSM simulations. https://gdr.openei.org/files/1133/Readme.txt
57 Input and output files associated with tracer transport simulation for the first EGS Collab SIGMA-V experiment. See Section 6.3 of Winterfield SGW paper for additional information. https://gdr.openei.org/files/1133/Tracer%20Simulation.zip
57 Input and output files associated with thermal breakthrough simulations for the first EGS Collab SIGMA-V experiment. Simulations were run using injection rates of 400, 1000, 1500, 2000, and 6000 ml/min. See Section 6.3 of Winterfield SGW paper for additional information. https://gdr.openei.org/files/1133/Thermal%20Simulations.zip
33 2019 Stanford Geothermal Workshop paper titled "Code Modifications for Modeling Chemical Tracers and Embedded Natural Fractures at EGS Collab." Includes background information of the EGS Collab project, info on TOUGH2-CSM formulation, details about the finite difference approximation to coupled fluid and heat flow, modeling dynamic adsorption in TOUGH2-CSM, modeling discrete fracture in TOUGH2-CSM, example simulations, and conclusions. https://gdr.openei.org/files/1133/Winterfeld.pdf

Tags

  • breakthrough
  • natural
  • modeling
  • egs
  • circulation
  • tough2-csm
  • surf
  • tough2
  • chemical
  • egs-collab
  • enhanced-geothermal-systems
  • sanford-underground-research-facility
  • reservoir
  • fractures
  • sorption
  • monitoring
  • transfer
  • injection
  • fracturing
  • sigma-v
  • injector
  • hydraulic
  • tracer
  • temperature
  • fluid-flow
  • simulation
  • geothermal
  • energy
  • thermal
  • heat-flow

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