EGS Collab Experiment 2: Core Logs


Core logs from the EGS Collab project Experiment 2 for the Top Vertical well (TV4100) and the Top Horizontal well (TV 4100) on the 4100 Level of SURF (the Sanford Underground Research Facility), single PDF file, 5-ft run intervals. In the monitoring well IDs, "O" indicates that the well is orthogonal to the anticipated fracture plane, "T" refers to top, and "H" refers to horizontal.

Logs include: experiment number; borehole ID; depth interval; run number; final packed core box number; scribe line (yes/no; red-on-right convention); logging dates; logger initials; as well as sketches of core foliation, folding, and fracturing with additional details and notes on other features of interest.

Shift reports include: date, location, personnel, summary of site activity, and field notes

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Additional Info

DOE Project Name: EGS Collab
DOE Project Number: EE0032708
DOE Project Lead: Lauren Boyd
Last Updated: 20 days ago
Data from July, 2019
Submission in progress


Lawrence Berkeley National Laboratory


In progress License 


Patrick Dobson
Lawrence Berkeley National Laboratory
Pengcheng Fu
Lawrence Livermore National Laboratory
Megan Smith
Lawrence Livermore National Laboratory
Dustin Crandall
National Energy Technology Laboratory


geothermal, energy, EGS Collab, SURF, hydraulic, fracturing, stimulation, Sanford Underground Research Facility, experiment, EGS


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