The EGS Collab project focuses on intermediate scale (~10‐20 m) EGS reservoir creation processes and related model validation at crystalline rock sites. It offers a great opportunity to validate computer simulations against extensive field observations that provide definitive characterization of the outcomes of hydraulic stimulations. In each of the two sets of Collab experiments, extensive modeling was performed to support experiment design. These modeling results constituted the basis for post-experiment validations. For Experiment 1, which focused on hydraulic fracturing, design-phase modeling successfully predicted the hydraulic fracture’s strong tendency to propagate toward the drift. However, the role of rock fabric in determining fracture growth pattern was not realized until a significant discrepancy was observed in validation. The final enriched results matched well with experiment results. We also report simulation results to support Experiment 2 design, which will be validated after the experiments.

Press the Back button in your browser, or search again.

Copyright 2021, Stanford Geothermal Program: Readers who download papers from this site should honor the copyright of the original authors and may not copy or distribute the work further without the permission of the original publisher.