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Title: Elevation Grid for top Columbia River Basalt (CRBG) in the Portland Basin used in DDU Feasibility Study

Abstract

The Portland Basin is a prime location to assess the feasibility of DDU-TES because natural geologic conditions provide thermal and hydraulic separation from overlying aquifers that would otherwise sweep away stored heat. Under the Portland Basin, the lower Columbia River Basalt Group (CRBG) aquifers contain brackish water (1,000-10,000 mg/L TDS), indicating low groundwater flow rates and poor connection with the overlying regional aquifer. Further, CRBG lavas tend to have comparatively low thermal conductivity, indicating that the 400-1,000 ft thick CRBG may be an effective thermal barrier to the overlying aquifer. A temporally and spatially limited previous study of a Portland Basin CRBG aquifer demonstrated that the injection of waste heat resulted in an increase in temperature by more than a factor of two, indicating a high potential for storing heat. This data submission includes comma delimited .XYZ grid of top Columbia River Basalt (CRBG) elevations in the Portland Basin, a spreadsheet of ArcGIS attribute table for associated data points, a map of data types used to constrain top CRBG, top CRBG structure map created using SMT Kingdom Suite software, and cross sections through top CRBG structure map created using SMT Kingdom Suite software.

Authors:
;
Publication Date:
Research Org.:
DOE Geothermal Data Repository; Portland State University
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)
Contributing Org.:
Portland State University
OSTI Identifier:
1493810
Report Number(s):
1104
DOE Contract Number:  
EE0008104
Resource Type:
Data
Data Type:
Specialized Mix
Country of Publication:
United States
Availability:
GDRHelp@ee.doe.gov
Language:
English
Subject:
15 Geothermal Energy; geothermal; energy; DDU; Deep Direct-Use; elevations; Portland Basin; ArcGIS; geospatial data; GIS; CRBG; structure map; cross section; geology; feasibility; Portland; Oregon; DEM; digital elevation map; seismic; well data; outcrop; survey; map; cross-section; DDU-TES; thermal energy storage; Columbia River Basalt Group

Citation Formats

Bershaw, John, and Scanlon, Darby. Elevation Grid for top Columbia River Basalt (CRBG) in the Portland Basin used in DDU Feasibility Study. United States: N. p., 2018. Web. doi:10.15121/1493810.
Bershaw, John, & Scanlon, Darby. Elevation Grid for top Columbia River Basalt (CRBG) in the Portland Basin used in DDU Feasibility Study. United States. doi:10.15121/1493810.
Bershaw, John, and Scanlon, Darby. Sat . "Elevation Grid for top Columbia River Basalt (CRBG) in the Portland Basin used in DDU Feasibility Study". United States. doi:10.15121/1493810. https://www.osti.gov/servlets/purl/1493810.
@article{osti_1493810,
title = {Elevation Grid for top Columbia River Basalt (CRBG) in the Portland Basin used in DDU Feasibility Study},
author = {Bershaw, John and Scanlon, Darby},
abstractNote = {The Portland Basin is a prime location to assess the feasibility of DDU-TES because natural geologic conditions provide thermal and hydraulic separation from overlying aquifers that would otherwise sweep away stored heat. Under the Portland Basin, the lower Columbia River Basalt Group (CRBG) aquifers contain brackish water (1,000-10,000 mg/L TDS), indicating low groundwater flow rates and poor connection with the overlying regional aquifer. Further, CRBG lavas tend to have comparatively low thermal conductivity, indicating that the 400-1,000 ft thick CRBG may be an effective thermal barrier to the overlying aquifer. A temporally and spatially limited previous study of a Portland Basin CRBG aquifer demonstrated that the injection of waste heat resulted in an increase in temperature by more than a factor of two, indicating a high potential for storing heat. This data submission includes comma delimited .XYZ grid of top Columbia River Basalt (CRBG) elevations in the Portland Basin, a spreadsheet of ArcGIS attribute table for associated data points, a map of data types used to constrain top CRBG, top CRBG structure map created using SMT Kingdom Suite software, and cross sections through top CRBG structure map created using SMT Kingdom Suite software.},
doi = {10.15121/1493810},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {12}
}

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