This package includes data and models that support hydraulic fracture stimulation and fluid circulation experiments in the Sanford Underground Research Facility (SURF). A paper by Schwering et al. (2020) describes the deterministic basis for developing a "common" discrete fracture network (CDFN) model of significant natural fractures in EGS Collab Testbed 1 on the 4850-Level of SURF. The ReadMe for this model shows drift, wells, scanlines, fracture data, interpreted fractures, and geophysical visualizations. There is also a summary of the data that was used in this experiment and includes results from reviewing core, televiewer (TV) logs, core-TV depth/feature registration, and from mapping weeps in the 4850-Level drift. The CDFN is intended to be a baseline model of the pre-stimulated testbed (though some observations from stimulation helped inform the model).
- PDFDeterministic DFN Model for EGS Collab Draft.pdf
- XLSXCDFN Data Summary.xlsx
- PDFCDFN ReadMe.pdf
- gov%7C195f0cdfd8654a97026f08d864bb73c6%7Ca0f29d7e28cd4f5484427885aee7c080%7C0%7C0%7C637370103552780722&sdata=yzp2Bl8fakjgFR8tuyYcfihFocHZNqJ%2FjH6WrztmzMk%3D&reserved=0Deterministic DFN Model for EGS Collab Final Publication