Utah FORGE: Fluid Injection-Rate Controls on Seismic Moment from Laboratory Fault Reactivation Experiments

Description

This dataset contains experimental and acoustic data from shear reactivation tests that investigate the relationship between fluid-injection rate, pore pressure distribution, and seismic moment during laboratory fault slip. It includes raw mechanical data and acoustic emission recordings from fifteen experiments performed on 2.5-3 inch granitoid cores from the Utah FORGE enhanced geothermal systems (EGS) site. Each sample contains a single inclined fracture with small-scale surface roughness. Experiments were conducted in an aluminum triaxial pressure vessel (TEMCO) equipped with three independently servo-controlled pumps using distilled water as the working fluid. The pumps regulated confining, upstream pore, and axial pressures, with each connected to a LabView interface to record applied pressures, cumulative injected volumes, and flow rates. The downstream outlet was closed to allow pressurization, monitored by an external pressure transducer. Axial displacement was measured by a linear variable differential transformer (LVDT) attached to the axial piston and converted to shear displacement along the fracture. Acoustic emissions were recorded using P-wave transducers, with event timing, amplitude, and cumulative amplitude compared against seismic moment and shear slip velocity. Fluid injection rates of 0.05, 0.25, and 0.75 mL/min were applied under constant shear stress conditions, with both uniform and non-uniform along-fault pressure distributions. Samples were fully saturated with deionized water. Axial and confining stresses were increased to 3 MPa in 500 kPa increments, while pore pressure was held at 200 kPa prior to initiating shear mobilization. Axial stress was then increased to induce shear slip and subsequently reduced to approximately 60%, 80%, or 90% of the peak shear stress, depending on the experiment. The raw mechanical data files include time-series measurements of confining, pore, and axial pressures; pump volumes and flow rates; time (in hours:minutes:seconds); axial displacement (in millimeters); and downstream pressure (in psi).

Resources

Name Format Description Link
0 MATLAB script for experiment MR68 run one (0.05 mL/min, 90% prestress, uniform pore pressure), used to process and visualize mechanical and acoustic data. This experiment (and code) is an example of a uniform pore fluid pressure. https://gdr.openei.org/files/1775/MR68_Granitoid_CR0p05_90_1.m
47 Time-series mechanical data from experiment MR68 run one (0.05 mL/min, 90% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR68_Granitoid_CR0p05_6.txt
0 MATLAB script for experiment MR3 (0.05 mL/min, 80% prestress, non-uniform pore pressure), used to process and visualize mechanical and acoustic data. This experiment (and code) is an example of a non-uniform pore fluid pressure. https://gdr.openei.org/files/1775/MR3_Granitoid_CR0p05_80_1.m
47 Time-series mechanical data from experiment MR3 run one (0.05 mL/min, 80% prestress, non-uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR3_Granitoid_CR0p05_1.txt
47 Raw data for MR14 experiment, 0.05 mL/min, 80% prestress, run two. Uniform pore fluid pressure. Time-series data of confining, pore, and axial pressures; pump volumes; flow rates; axial displacement; and downstream pressure for experiment MR14 run two under uniform pore pressure conditions (0.05 mL/min, 80 % prestress). https://gdr.openei.org/files/1775/MR14_Granitoid_CR0p05_2.txt
47 Raw mechanical data from experiment MR15 run 3, including applied pressures, flow rates, and axial displacement measured under 0.05 mL/min injection and 80 % prestress with uniform pore pressure. https://gdr.openei.org/files/1775/MR15_Granitoid_CR0p05_3.txt
47 Time-series mechanical data from experiment MR23 run four (0.05 mL/min, 80% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR23_Granitoid_CR0p05_4.txt
47 Time-series mechanical data from experiment MR80 run one (0.05 mL/min, 60% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR80_Granitoid_CR0p05_8.txt
47 Time-series mechanical data from experiment MR71 run one (0.25 mL/min, 90% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR71_Granitoid_CR0p25_7.txt
47 Time-series mechanical data from experiment MR1 run 1 (0.25 mL/min, 80% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR1_Granitoid_CR0p25_1.txt
47 Mechanical data from experiment MR17 run two documenting applied pressures, flow rates, injection volumes, and axial displacement under uniform pore pressure conditions (0.25 mL/min, 80 % prestress). https://gdr.openei.org/files/1775/MR17_Granitoid_CR0p25_4.txt
47 Time-series mechanical data from experiment MR22 run three (0.25 mL/min, 80% prestress, non-uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR22_Granitoid_CR0p25_5.txt
47 Time-series mechanical data from experiment MR79 run one (0.25 mL/min, 60% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR79_Granitoid_CR0p25_8.txt
47 Time-series mechanical data from experiment MR74 run one (0.75 mL/min, 90% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR74_Granitoid_CR0p75_14.txt
47 Time-series mechanical data from experiment MR2 run one (0.75 mL/min, 80% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR2_Granitoid_CR0p75_1.txt
47 Time-series mechanical data from experiment MR41 run two (0.75 mL/min, 80% prestress, non-uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR41_Granitoid_CR0p75_11.txt
47 Time-series mechanical data from experiment MR78 run one (0.75 mL/min, 60% prestress, uniform pore pressure), including confining, pore, and axial pressures; pump volumes and flow rates; axial displacement; and downstream pressure. https://gdr.openei.org/files/1775/MR78_Granitoid_CR0p75_18.txt
75 Processed acoustic emission catalog from experiment MR68 (0.05 mL/min, 90% prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR68_Granitoid_CR0p05_6.mat
75 Processed acoustic emission catalog from experiment MR3 (0.05 mL/min, 80% prestress, non-uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR3_Granitoid_CR0p05_1.mat
75 Processed acoustic emission catalog from experiment MR14 (0.05 mL/min injection rate, 80 % prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR14_Granitoid_CR0p05_2.mat
75 Processed acoustic emission catalog from experiment MR15 (0.05 mL/min injection rate, 80 % prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR15_Granitoid_CR0p05_3.mat
75 Processed acoustic emission catalog from experiment MR23 (0.05 mL/min, 80% prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR23_Granitoid_CR0p05_4.mat
75 Processed acoustic emission catalog from experiment MR71 (0.25 mL/min, 90% prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR71_Granitoid_CR0p25_7.mat
75 Processed acoustic emission catalog from experiment MR1 (0.25 mL/min injection rate, 80% prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR1_Granitoid_CR0p25_run1.mat
75 Acoustic emission catalog for experiment MR17 (0.25 mL/min, 80 % prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR17_Granitoid_CR0p25_4.mat
75 Processed acoustic emission catalog from experiment MR22 (0.25 mL/min, 80% prestress, non-uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR22_Granitoid_CR0p25_5.mat
75 Processed acoustic emission catalog from experiment MR79 (0.25 mL/min, 60% prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR79_Granitoid_CR0p25_8.mat
75 Processed acoustic emission catalog from experiment MR74 (0.75 mL/min, 90% prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR74_Granitoid_CR0p75_14.mat
75 Processed acoustic emission catalog from experiment MR2 (0.75 mL/min, 80% prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR2_Granitoid_CR0p75_1.mat
75 Processed acoustic emission catalog from experiment MR41 (0.75 mL/min, 80% prestress, non-uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR41_Granitoid_CR0p75_11.mat
75 Processed acoustic emission catalog from experiment MR78 (0.75 mL/min, 60% prestress, uniform pore pressure). https://gdr.openei.org/files/1775/AEcatalog_MR78_Granitoid_CR0p75_18.mat

Tags

  • pore-pressure
  • time-series-data
  • axial-displacement
  • processed-data
  • pore-pressure-distribution
  • egs
  • acoustic-emissions
  • geomechanics
  • shear-stress
  • utah-forge
  • mechinical-data
  • granitoid
  • matlab
  • laboratory-experiments
  • triaxial-testing
  • induced-seismicity
  • shear-slip
  • permeability
  • injection-rate
  • fault-reactivation
  • fluid-injection
  • raw-data
  • pressure-vessel
  • geothermal
  • seismic-moment
  • energy

Topics

Categories