EGS Collab Testbed 1: Second Set Tracer Test Results


The EGS Collab project is developing ~10-20 m-scale field sites where fracture stimulation and flow models can be validated against controlled, small-scale, in-situ experiments. The first multi-well experimental site was established at the 4850 level in the Homestake Mine in Lead, South Dakota, where hydraulic fractures were created at an injection well drilled sub-horizontal from the drift. This file contains the second set of tracer data (also include the data uploaded previously, for the EGS Collab testbed. The tracer tests were conducted during October 2018 - November 2019. Injected tracers include DNA, C-dots (fluorescein nano particles), fluorescein, rhodamine-b, sodium chloride, lithium bromide and cesium iodine. The tracers have been detected in three flowing wells located about 7.5 to 9 meters away from the injection interval. The tracer breakthrough curves from these locations have been adjusted to account for the residence time in the injection and production tubing. The details about the tracer test can be found in Background and Methods of Tracer Tests (Mattson et al. (2019,a,b)) (also included in this package).

Mattson, E.D., Neupane, G., Plummer, M.A., Hawkins, A., Zhang, Y. and the EGS Collab Team 2019a. Preliminary Collab fracture characterization results from flow and tracer testing efforts. In Proceedings 44th Workshop on Geothermal Reservoir Engineering, edited, Stanford University, Stanford, California.
Mattson, E.D., Neupane, G., Hawkins, A., Burghardt, J., Ingraham, M., Plummer, M., and the EGS Collab Team, 2019b. Fracture tracer injection response to pressure
perturbations at an injection well. GRC Transactions, Vol. 43, 2019.
Neupane, Ghanashyam, Earl Mattson, Adam Hawkins, Mitchell Plummer, and Yuran Zhang. EGS Collab Testbed 1: Tracer data sets. No. 1128. DOE Geothermal Data Repository; Idaho National Laboratory, 2019.

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Additional Info

DOE Project Name: EGS Collab
DOE Project Number: EE0032708
DOE Project Lead: Lauren Boyd
DOI: 10.15121/1593283
Last Updated: 12 months ago
Data from December, 2019
Submitted Dec 19, 2019


Idaho National Laboratory



Publicly accessible License 


Ghanashyam Neupane
Idaho National Laboratory
Earl Mattson
Mattson Hydrology LLC.
Adam Hawkins
Stanford University
Megan Smith
Lawrence Livermore National Laboratory


geothermal, energy, EGS COllab, SURF, Tracer tests, SIGMA-V, C-dots, Rhodamine-B, Fluorescein, breakthrough curve, chloride, tracer data, hydraulic, fracturing, simulation, tracer, experimental, EGS, Sanford Underground Research Facility, injection, sodium chloride, lithium bromide, cesium iodine, Testbed 1, stimulation


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