The EGS Collab is conducting experiments in hydraulic fracturing at a depth of 1.5 km in the Sanford Underground Research Facility (SURF) on the 4850 Level. A total of eight ~60m-long subhorizontal boreholes were drilled at that depth on the western rib of the West Access Drift. Six of these holes are used for geophysical monitoring, one is used for hydraulic fracturing and the remaining hole was designed as a production borehole. In addition to these eight boreholes, 4 5-m Jack leg boreholes were drilled for housing geophones. This submission package includes various data type that were assembled to create Earth Models of the testbed.
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.
6 Resources
Reduced Complete Complex 3D Surface.dxf
Laser drift map, *.dxf are AutoCAD mesh files, all units are in ft with the local Homestate Mine Coordinate system.
Location of hydrophone, accelerometer, geophone, CASSM, thermnistor, seismic shot, and ERT eectrode sensors along the monitoring holes.
Note: The coordinate system use... more
Earth model point data includes: CASSM locations, ERT electrodes locations, Points at 10cm interval, SigmaV channel monitoring points, and Thermistors locations.
Note:... more
Well gyro data include: Collar locations for Sigma-V holes, E1-I Az gyro, E1-Jack leg holes Az gyro, E1-OB Az Gyro, E1-OT Az Gyro, E1-P Az gyro, E1-PDB Az gyro, E1-PDT ... more
Geology and drift as mesh files include: 4100 drifts, 4850 drifts, complete complex 3D surface, Drift laser low res, homestake formation, rhyolite dike swarm, Ross Yate... more
