EGS Collab Experiment 2: Hydraulic Pressure Test Results

Description

The EGS Collab experiment 2 was focused on testing shear stimulation techniques. Shear stimulation, in this case, means using hydraulic pressure to cause shear slip on preexisting fracture or fault planes such that the hydraulic conductivity of the fracture or fault increases. The concept is to create a percolating network of permeable fractures by enhancing the permeability of a primarily preexisting network of fractures. To test this concept the hydraulic pressures for experiment 2 were kept below the the estimated magnitude of the least compressive principal stress based on a set of stress measurements in nearby well TV4100. All tests for experiment 2 were performed by applying hydraulic pressure to well E2-TC. Subsequent stimulations in both E2-TC and E2-TU where the injection pressure was increased above the least compressive principal stress are considered part of experiment 3, which is documented separately. The data are organized in directories labeled by the depth range isolated between packers.

Resources

Name Format Description Link
57 A zip archive of all EGS Collab experiment 2 (shear stimulation) data. Stimulations and circulations where fluid pressure exceeded the minimum principal stress are documented in a separate submission for experiment 3. Inside the archive is a README file that describes the organization of the data. https://gdr.openei.org/files/1476/EGS_Collab_Experiment2_Data.zip

Tags

  • processed-data
  • experiment
  • egs
  • south-dakota
  • surf
  • lead
  • egs-collab
  • shear-stimulation
  • sanford-underground-research-facility
  • python
  • well-data
  • code
  • fracturing
  • stimulation
  • hydraulic
  • raw-data
  • geothermal
  • energy
  • excel

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