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Validation of Play Fairway Analysis of the geothermal potential of Camas Prairie, south-central Idaho, by an exploration well

Journal Article · · Geothermal Energy

Abstract

Play Fairway Analysis (PFA) methodology was adapted for geothermal exploration at Camas Prairie, Idaho. Geophysical data, structural and geologic mapping, volcanic rock ages and vent locations, and the distribution of thermal springs and wells all indicated a relatively high geothermal potential along the southern margin of the Prairie. An exploration well (USU Camas-1) was drilled to a depth of 618.3 m to validate the PFA. A permeable zone was encountered at ~ 357.5 m with a maximum measured temperature of ~ 80 °C, which was suppressed following the injection of cold water. A moderate transmissivity of ~ 0.25–1 cm 2 /s estimated from an injection test as well a seasonal artesian flow at ~ 0.7 L/s corroborate the presence of a permeable zone. The existence of a lacustrine clay seal was confirmed near the bottom of the basin-fill sediment occupying the upper 314 m of the well. Geothermometers suggest the USU Camas-1 well water equilibrated at a reservoir temperature of ~ 120 °C. Based on the locations of both thermal and cold wells, geothermal fluids appear to be flowing upward along one or both of two fault systems. The presence of young basalts and elevated helium isotope ratios suggest that the heat source of Camas Prairie is magmatic. However, the faults may be acting as a conduit for geothermal fluids to rise from great depth without a shallow magmatic source being present. Camas Prairie is a promising area for geothermal development, but the relatively low reservoir temperatures indicate this resource may not be suitable for electric generation. Perhaps the best use would be for heating.

Sponsoring Organization:
USDOE
OSTI ID:
1993886
Journal Information:
Geothermal Energy, Journal Name: Geothermal Energy Journal Issue: 1 Vol. 11; ISSN 2195-9706
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Germany
Language:
English

References (19)

Continuous flow2H/1H and18O/16O analysis of water samples with dual inlet precision journal January 2004
An empirical NaKCa geothermometer for natural waters journal May 1973
Magnesium correction to the NaKCa chemical geothermometer journal September 1979
Geothermal solute equilibria. Derivation of Na-K-Mg-Ca geoindicators journal December 1988
Regional implications of heat flow of the Snake River Plain, Northwestern United States journal August 1989
Chemical geothermometers and mixing models for geothermal systems journal January 1977
The Yellowstone hotspot journal July 1994
Comparison of circulation times of thermal waters discharging from the Idaho batholith based on geothermometer temperatures, helium concentrations, and 14C measurements journal February 2006
Geodynamics of the Yellowstone hotspot and mantle plume: Seismic and GPS imaging, kinematics, and mantle flow journal November 2009
A graphic procedure in the geochemical interpretation of water-analyses journal January 1944
Isotopic Evolution of the Idaho Batholith and Challis Intrusive Province, Northern US Cordillera journal November 2011
Isotopic Variations in Meteoric Waters journal May 1961
Geothermal play Fairway Analysis of the Snake River Plain, Idaho conference January 2017
Play Fairway Analysis in Geothermal Exploration: case Study in Snake River Plain Volcanic Province conference January 2019
Evaluation of the Geothermal Potential of the Camas Prairie, South-Central Idaho conference January 2021
Effect of an 860-m thick, cold, freshwater aquifer on geothermal potential along the axis of the eastern Snake River Plain, Idaho journal December 2017
Evaluation of the geothermal potential of the western Snake River Plain based on a deep corehole on the Mountain Home AFB near Mountain Home, Idaho journal September 2019
Snake River Plain Play Fairway Analysis Phase 1 Favorability Model (DE EE0006733) dataset January 2021
Snake River Plain Play Fairway Analysis Phase 2 Favorability Model (DE EE0006733) dataset January 2021

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