DCIF Westerly Granite AE Stress Effect Test (Task 3-1)

Directional Cooling-Induced Fracturing (DCIF) experiments were conducted on rectangular Westerly granite blocks (width=depth=4.0", height=2.0"). Liquid nitrogen was poured in a small, 1"-diameter copper cup attached to the top of the sample, and the resulting acoustic emissions (AEs) and temperature changes on the surface of the sample were monitored. Several confining stresses were applied bi-axially to the sides of the samples so that the onset of AE activity and the stress applied to the sample were correlated. The obtained AEs were used to determine the microcracking source locations and amplitude, and the associated moment tensors. Included in this submission are the animations of the AE locations and graphics displaying the measured temperature-AE activity changes for different stresses.

Data and Resources

Field Value
DOI 10.15121/1829305
accessLevel public
bureauCode {019:20}
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dataQuality true
datagov_dedupe_retained 20250120155001
identifier https://data.openei.org/submissions/7459
issued 2021-07-08T06:00:00Z
landingPage https://gdr.openei.org/submissions/1343
license https://creativecommons.org/licenses/by/4.0/
modified 2021-11-08T20:04:30Z
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programCode {019:006}
projectLead Zachary Frone
projectNumber EE0009033
projectTitle DEVELOPMENT OF A DIRECTIONAL COOLING INDUCED FRACTURING (DCIF) TECHNOLOGY FOR NEAR-WELLBORE STRESS ESTIMATION IN GEOTHERMAL RESERVOIRS
publisher Lawrence Berkeley National Laboratory
resource-type Dataset
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Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • acoustic-emission
  • acoustic-emission-location
  • acoustic-emission-rate
  • data
  • energy
  • fracture
  • fracturing
  • geophysics
  • geothermal
  • granite
  • microfracture
  • processed-data
  • stress
  • stress-measurement
  • stress-testing
  • temperature
  • thermal-fracturing
  • westerly-granite
isopen True
license_id cc-by
license_title Creative Commons Attribution
license_url http://www.opendefinition.org/licenses/cc-by
maintainer Seiji Nakagawa
maintainer_email snakagawa@lbl.gov
metadata_created 2025-09-24T02:33:36.420074
metadata_modified 2025-09-24T02:33:36.420083
notes Directional Cooling-Induced Fracturing (DCIF) experiments were conducted on rectangular Westerly granite blocks (width=depth=4.0", height=2.0"). Liquid nitrogen was poured in a small, 1"-diameter copper cup attached to the top of the sample, and the resulting acoustic emissions (AEs) and temperature changes on the surface of the sample were monitored. Several confining stresses were applied bi-axially to the sides of the samples so that the onset of AE activity and the stress applied to the sample were correlated. The obtained AEs were used to determine the microcracking source locations and amplitude, and the associated moment tensors. Included in this submission are the animations of the AE locations and graphics displaying the measured temperature-AE activity changes for different stresses.
num_resources 15
num_tags 26
title DCIF Westerly Granite AE Stress Effect Test (Task 3-1)