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Geothermal Resource at the McGee Mountain Prospect, Humboldt County, Nevada

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This report describes the geothermal resource at McGee Mountain, including:
1. Local geology
2. Thermal features
3. Known boreholes and temperature gradients
4. Geophysical surveys
5. Fluid geochemistry and geothermometry
6. Estimate of the heat-in-place

Description of the heat-in-place estimate:
The magnitude of the geothermal resource at McGee Mountain (Painted Hills) has been estimated using a Monte Carlo method applied to estimating heat-in-place. The method relies (along with certain other parameters) on estimates of the area, thickness and average temperature of the resource, but among these, only area has some constraint at this time. Therefore, the estimates used for thickness and temperature have been based on the characteristics of other
geothermal resources in Nevada.

Results yield a 90%-probable ("P90") thermal energy-in-place estimate of 87,300 MWth-years (that is, 90% of estimates are higher). We consider this to be a minimum likely value. At 50% probability ("P50") the estimate is 134,000 MWth-years. The recoverable portion of the preceding estimate of energy-in-place has also been estimated and converted into electrical energy, using values of recovery factor, rejection temperature, utilization factor, plant capacity factor and power plant life that are provided. The minimum (90% probable) estimate for generation potential is about 25 MWe for 30 years (or a total of 750 MWe-years) and at 50% probability the estimate is 52 MWe for 30 years (or a total of 1,560 MWe-years). These estimates are somewhat larger than a public-domain McGee resource estimate made by GeothermEx in 2004, because a 2-m deep temperature survey by Caldera has established continuance of the thermal anomaly about a half mile further north than previously documented.

This resource estimate was made without reference to the Caldera property (project area) boundary, but it is likely that the entire magnitude of estimated resource lies within it. The estimate should be regarded with caution because there needs to be subsequent proof of area, thickness, temperature and commercial permeability by means of deep drilling and testing. No heat-in-place estimate of this type should ever be used to determine the final, installed size of a well field and power plant.

Citation Formats

TY - DATA AB - This report describes the geothermal resource at McGee Mountain, including: 1. Local geology 2. Thermal features 3. Known boreholes and temperature gradients 4. Geophysical surveys 5. Fluid geochemistry and geothermometry 6. Estimate of the heat-in-place Description of the heat-in-place estimate: The magnitude of the geothermal resource at McGee Mountain (Painted Hills) has been estimated using a Monte Carlo method applied to estimating heat-in-place. The method relies (along with certain other parameters) on estimates of the area, thickness and average temperature of the resource, but among these, only area has some constraint at this time. Therefore, the estimates used for thickness and temperature have been based on the characteristics of other geothermal resources in Nevada. Results yield a 90%-probable ("P90") thermal energy-in-place estimate of 87,300 MWth-years (that is, 90% of estimates are higher). We consider this to be a minimum likely value. At 50% probability ("P50") the estimate is 134,000 MWth-years. The recoverable portion of the preceding estimate of energy-in-place has also been estimated and converted into electrical energy, using values of recovery factor, rejection temperature, utilization factor, plant capacity factor and power plant life that are provided. The minimum (90% probable) estimate for generation potential is about 25 MWe for 30 years (or a total of 750 MWe-years) and at 50% probability the estimate is 52 MWe for 30 years (or a total of 1,560 MWe-years). These estimates are somewhat larger than a public-domain McGee resource estimate made by GeothermEx in 2004, because a 2-m deep temperature survey by Caldera has established continuance of the thermal anomaly about a half mile further north than previously documented. This resource estimate was made without reference to the Caldera property (project area) boundary, but it is likely that the entire magnitude of estimated resource lies within it. The estimate should be regarded with caution because there needs to be subsequent proof of area, thickness, temperature and commercial permeability by means of deep drilling and testing. No heat-in-place estimate of this type should ever be used to determine the final, installed size of a well field and power plant. AU - Zehner, Richard DB - Open Energy Data Initiative (OEDI) DP - Open EI | National Renewable Energy Laboratory DO - KW - geothermal KW - Nevada KW - McGee Mountain KW - Geology KW - Geochemistry KW - Monte Carlo KW - Heat in place estimate KW - Report KW - thermal features KW - borehole gradient KW - temperature gradient KW - geophysics KW - geophysical survey KW - borehole KW - bore hole KW - geothermometry KW - fluid KW - heat-in-place LA - English DA - 2010/07/01 PY - 2010 PB - Geothermal Technical Partners, Inc. T1 - Geothermal Resource at the McGee Mountain Prospect, Humboldt County, Nevada UR - https://data.openei.org/submissions/6683 ER -
Export Citation to RIS
Zehner, Richard. Geothermal Resource at the McGee Mountain Prospect, Humboldt County, Nevada. Geothermal Technical Partners, Inc., 1 July, 2010, GDR. https://gdr.openei.org/submissions/345.
Zehner, R. (2010). Geothermal Resource at the McGee Mountain Prospect, Humboldt County, Nevada. [Data set]. GDR. Geothermal Technical Partners, Inc.. https://gdr.openei.org/submissions/345
Zehner, Richard. Geothermal Resource at the McGee Mountain Prospect, Humboldt County, Nevada. Geothermal Technical Partners, Inc., July, 1, 2010. Distributed by GDR. https://gdr.openei.org/submissions/345
@misc{OEDI_Dataset_6683, title = {Geothermal Resource at the McGee Mountain Prospect, Humboldt County, Nevada}, author = {Zehner, Richard}, abstractNote = {This report describes the geothermal resource at McGee Mountain, including:
1. Local geology
2. Thermal features
3. Known boreholes and temperature gradients
4. Geophysical surveys
5. Fluid geochemistry and geothermometry
6. Estimate of the heat-in-place

Description of the heat-in-place estimate:
The magnitude of the geothermal resource at McGee Mountain (Painted Hills) has been estimated using a Monte Carlo method applied to estimating heat-in-place. The method relies (along with certain other parameters) on estimates of the area, thickness and average temperature of the resource, but among these, only area has some constraint at this time. Therefore, the estimates used for thickness and temperature have been based on the characteristics of other
geothermal resources in Nevada.

Results yield a 90\%-probable ("P90") thermal energy-in-place estimate of 87,300 MWth-years (that is, 90\% of estimates are higher). We consider this to be a minimum likely value. At 50\% probability ("P50") the estimate is 134,000 MWth-years. The recoverable portion of the preceding estimate of energy-in-place has also been estimated and converted into electrical energy, using values of recovery factor, rejection temperature, utilization factor, plant capacity factor and power plant life that are provided. The minimum (90\% probable) estimate for generation potential is about 25 MWe for 30 years (or a total of 750 MWe-years) and at 50\% probability the estimate is 52 MWe for 30 years (or a total of 1,560 MWe-years). These estimates are somewhat larger than a public-domain McGee resource estimate made by GeothermEx in 2004, because a 2-m deep temperature survey by Caldera has established continuance of the thermal anomaly about a half mile further north than previously documented.

This resource estimate was made without reference to the Caldera property (project area) boundary, but it is likely that the entire magnitude of estimated resource lies within it. The estimate should be regarded with caution because there needs to be subsequent proof of area, thickness, temperature and commercial permeability by means of deep drilling and testing. No heat-in-place estimate of this type should ever be used to determine the final, installed size of a well field and power plant.
}, url = {https://gdr.openei.org/submissions/345}, year = {2010}, howpublished = {GDR, Geothermal Technical Partners, Inc., https://gdr.openei.org/submissions/345}, note = {Accessed: 2025-05-06} }

Details

Data from Jul 1, 2010

Last updated Jun 5, 2017

Submitted Mar 7, 2014

Organization

Geothermal Technical Partners, Inc.

Contact

Richard Zehner

775.338.5593

Authors

Richard Zehner

Geothermal Technical Partners, Inc.

Research Areas

DOE Project Details

Project Name Recovery Act: Effectiveness of shallow temperature surveys to target a geothermal reservoir at previously explored site at McGee Mountain, Nevada

Project Lead Mark Ziegenbein

Project Number EE0002830

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