Directional Cooling-Induced Fracturing Westerly Granite Test Results

Nakagawa, Seiji

doi:10.15121/1780913

Title: Directional Cooling-Induced Fracturing Westerly Granite Test Results

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Abstract

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.

Authors:

Nakagawa, Seiji

Lawrence Berkeley National Laboratory

Publication Date:: Thu Dec 17 23:00:00 EST 2020

Other Number(s):: 1302

DOE Contract Number:: EE0009033

Research Org.:: DOE Geothermal Data Repository; Lawrence Berkeley National Laboratory

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)

Collaborations:: Lawrence Berkeley National Laboratory

Subject:: 15 GEOTHERMAL ENERGY; Westerly granite; acoustic emissions; directional cooling; directional cooling-induced fracturing; fracture; geophysics; geothermal; granite; induced fracturing; laboratory experiment; liquid nitrogen; microcracking; moment tensor; seismic; stimulation; stress; temperature; temperature changes; thermal; thermal cracking; tomography; velocity; wellbore

OSTI Identifier:: 1780913

DOI:: https://doi.org/10.15121/1780913

Citation Formats


                    Nakagawa, Seiji. Directional Cooling-Induced Fracturing Westerly Granite Test Results.  United States: N. p., 2020. 
        Web.  doi:10.15121/1780913.

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                    Nakagawa, Seiji. Directional Cooling-Induced Fracturing Westerly Granite Test Results.  United States.  doi:https://doi.org/10.15121/1780913

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                    Nakagawa, Seiji. 2020.  
"Directional Cooling-Induced Fracturing Westerly Granite Test Results".  United States.  doi:https://doi.org/10.15121/1780913.  https://www.osti.gov/servlets/purl/1780913. Pub date:Thu Dec 17 23:00:00 EST 2020

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@article{osti_1780913,

  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.},

  doi          = {10.15121/1780913},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Thu Dec 17 23:00:00 EST 2020},

  month        = {Thu Dec 17 23:00:00 EST 2020}

}

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DOI: https://doi.org/10.15121/1780913

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