EGS Collab Testbed 2 Preliminary Test Wells Locations and Orientations


The EGS Collab project is evaluating a site for Experiment 2 (hydraulic fracturing/shearing) at a depth of 1.25 km in the Sanford Underground Research Facility (SURF) on the 4100 Level. Two early test holes were drilled in an alcove (formerly known as Battery Charging Station) near Yates Shaft. One of the test hole is about 50 m where as the other hole is about 10 m. This submission package includes well head locations, total lengths of boreholes, their orientations (gyro data). The reported boreholes orientation data were primarily obtained with REFLEX GYRO (TM) survey right after the completion of each hole. Well head locations were ascertained by Laser/LiDAR survey of the drift around the Testbed 2.

Note: The coordinate system used is local Homestake Mine Coordinate (HMC) system from an old gold mine that was in operation for over 100 years.

4 Resources

Related Datasets

Datasets associated with the same DOE project
  Submission Name Resources Submitted Status

Additional Info

DOE Project Name: EGS Collab
DOE Project Number: EE0032708
DOE Project Lead: Lauren Boyd
DOI: 10.15121/1593284
Last Updated: 12 months ago
Data from December, 2019
Submitted Dec 19, 2019


Idaho National Laboratory



Publicly accessible License 


Ghanashyam Neupane
Idaho National Laboratory
Craig Ulrich
Lawrence Berkeley National Laboratory
William Roggenthen
South Dakota School of Mines and Technology


geothermal, energy, SURF, EGS Collab, gyro data, hydraulic fracturing, hydraulic shearing, Sanford Underground Research Facility, well locations, wells, testbed 2, lidar, remote sensing, EGS, Experiment 2, well location, well orientation, SIGMA-V, test wells, well data, Leapfrog, Homestake Mine, borehole, gyro, collar location


Export Citation to RIS
Submission Downloads