Directional Cooling-Induced Fracturing Westerly Granite Test Results
Directional Cooling-Induced Fracturing (DCIF) experiments were conducted on a short, cylindrical sample of Westerly granite (diameter = 4 inches, height ~ 2 inches). Liquid nitrogen was poured in a 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. The obtained AEs were used to determine the microcracking source locations and amplitude, and the associated moment tensors. Included in this submission is an animation of the AEs, a graphic displaying the temperature changes, and the measured data.
Citation Formats
TY - DATA
AB - Directional Cooling-Induced Fracturing (DCIF) experiments were conducted on a short, cylindrical sample of Westerly granite (diameter = 4 inches, height ~ 2 inches). Liquid nitrogen was poured in a 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. The obtained AEs were used to determine the microcracking source locations and amplitude, and the associated moment tensors. Included in this submission is an animation of the AEs, a graphic displaying the temperature changes, and the measured data.
AU - Nakagawa, Seiji
DB - Geothermal Data Repository
DP - Open EI | National Renewable Energy Laboratory
DO - 10.15121/1780913
KW - geothermal
KW - thermal cracking
KW - acoustic emissions
KW - temperature changes
KW - laboratory experiment
KW - Westerly granite
KW - granite
KW - moment tensor
KW - fracture
KW - seismic
KW - geophysics
KW - liquid nitrogen
KW - thermal
KW - temperature
KW - stimulation
KW - directional cooling
KW - induced fracturing
KW - directional cooling-induced fracturing
KW - wellbore
KW - stress
KW - velocity
KW - tomography
KW - microcracking
LA - English
DA - 2020/12/18
PY - 2020
PB - Lawrence Berkeley National Laboratory
T1 - Directional Cooling-Induced Fracturing Westerly Granite Test Results
UR - https://doi.org/10.15121/1780913
ER -
Nakagawa, Seiji. Directional Cooling-Induced Fracturing Westerly Granite Test Results. Lawrence Berkeley National Laboratory, 18 December, 2020, Geothermal Data Repository. https://doi.org/10.15121/1780913.
Nakagawa, S. (2020). Directional Cooling-Induced Fracturing Westerly Granite Test Results. [Data set]. Geothermal Data Repository. Lawrence Berkeley National Laboratory. https://doi.org/10.15121/1780913
Nakagawa, Seiji. Directional Cooling-Induced Fracturing Westerly Granite Test Results. Lawrence Berkeley National Laboratory, December, 18, 2020. Distributed by Geothermal Data Repository. https://doi.org/10.15121/1780913
@misc{GDR_Dataset_1302,
title = {Directional Cooling-Induced Fracturing Westerly Granite Test Results},
author = {Nakagawa, Seiji},
abstractNote = {Directional Cooling-Induced Fracturing (DCIF) experiments were conducted on a short, cylindrical sample of Westerly granite (diameter = 4 inches, height ~ 2 inches). Liquid nitrogen was poured in a 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. The obtained AEs were used to determine the microcracking source locations and amplitude, and the associated moment tensors. Included in this submission is an animation of the AEs, a graphic displaying the temperature changes, and the measured data.},
url = {https://gdr.openei.org/submissions/1302},
year = {2020},
howpublished = {Geothermal Data Repository, Lawrence Berkeley National Laboratory, https://doi.org/10.15121/1780913},
note = {Accessed: 2025-05-25},
doi = {10.15121/1780913}
}
https://dx.doi.org/10.15121/1780913
Details
Data from Dec 18, 2020
Last updated May 17, 2021
Submitted Apr 21, 2021
Organization
Lawrence Berkeley National Laboratory
Contact
Seiji Nakagawa
510.486.7894
Authors
Keywords
geothermal, thermal cracking, acoustic emissions, temperature changes, laboratory experiment, Westerly granite, granite, moment tensor, fracture, seismic, geophysics, liquid nitrogen, thermal, temperature, stimulation, directional cooling, induced fracturing, directional cooling-induced fracturing, wellbore, stress, velocity, tomography, microcrackingDOE Project Details
Project Name DEVELOPMENT OF A DIRECTIONAL COOLING INDUCED FRACTURING (DCIF) TECHNOLOGY FOR NEAR-WELLBORE STRESS ESTIMATION IN GEOTHERMAL RESERVOIRS
Project Lead Zachary Frone
Project Number EE0009033
