Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

DCIF (Directional Cooling-Induced Fracturing) Westerly Granite AE Borehole Damage Effect Test (Task 3-0)

Metadata Updated: June 11, 2023

Directional Cooling-Induced Fracturing (DCIF) experiments were conducted on three rectangular Westerly granite blocks (width=depth=4.0", height=2.0") which were preheated to 200, 400, and 600 degree C to induce damage (microcracks) with varying degrees. 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. The experiments were conducted under one selected biaxial stress (5.8MPa). The obtained AEs were used to determine the microcracking source locations and amplitude, and the associated moment tensors. The onset time of the AEs was correlated with the cooling temperature, which was used to show that the temperature at the onset of microcracking is not affected significantly by the preexisting damage, compared to the impact of the stress in the sample. Included in this submission are the animations of the AE locations and graphics displaying the measured temperature-AE activity changes for samples with different degrees of microcrack damage.

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons Attribution

Downloads & Resources

Dates

Metadata Created Date April 26, 2022
Metadata Updated Date June 11, 2023

Metadata Source

Harvested from OpenEI data.json

Additional Metadata

Resource Type Dataset
Metadata Created Date April 26, 2022
Metadata Updated Date June 11, 2023
Publisher Lawrence Berkeley National Laboratory
Maintainer
Doi 10.15121/1842336
Identifier https://data.openei.org/submissions/5639
Data First Published 2022-01-27T07:00:00Z
Data Last Modified 2022-01-27T22:03:51Z
Public Access Level public
Bureau Code 019:20
Metadata Context https://openei.org/data.json
Metadata Catalog ID https://openei.org/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Data Quality True
Harvest Object Id 111b315f-1d9f-43a2-a65c-9c385f1dc109
Harvest Source Id 7cbf9085-0290-4e9f-bec1-91653baeddfd
Harvest Source Title OpenEI data.json
Homepage URL https://gdr.openei.org/submissions/1362
License https://creativecommons.org/licenses/by/4.0/
Old Spatial {"type":"Polygon","coordinates":-122.23848096158116,37.87640827519297,-122.23848096158116,37.87640827519297,-122.23848096158116,37.87640827519297,-122.23848096158116,37.87640827519297,-122.23848096158116,37.87640827519297}
Program Code 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
Source Datajson Identifier True
Source Hash 00c1a76df2ae4a803ae9024fd787edb33e7ee404
Source Schema Version 1.1
Spatial {"type":"Polygon","coordinates":-122.23848096158116,37.87640827519297,-122.23848096158116,37.87640827519297,-122.23848096158116,37.87640827519297,-122.23848096158116,37.87640827519297,-122.23848096158116,37.87640827519297}

Didn't find what you're looking for? Suggest a dataset here.

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov