hawthorne-nevada-deep-direct-use-feasibility-study-data-used-for-geothermal-resource-conceptual

The National Renewable Energy Laboratory in the US specializes in the research and development of renewable energy, energy efficiency, energy systems integration, and sustainable transportation.

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National Renewable Energy Laboratory (NREL)

Compilation of publicly-available fluid chemistry data for samples collected from wells in and near Hawthorne geothermal prospect A. Data include analyses conducted by the US Navy Geothermal Program Office (HWAAD-2A and HWAAD-3), records included in the Great Basin Groundwater Geochemistry Database hosted by the Great Basin Center for Geothermal Energy at the University of Nevada, Reno, and open-access reports. Stable isotope data and samples with lab IDs preceded by 'HAW' are from Koenig, B.A.,1981. Hawthorne Study Area. In: Low-to-moderate temperature resource assessment for Nevada: Area specific studies., by Trexler, D.T., Koenig, B.A., Flynn, T., Bruce, J.L., Ghusn, G., Final report to the US Department of Energy, prepared by the University of Nevada, Reno under contract No. 785AC08-79NV10039, 224p.

Hawthorne fluid chemistry compilation for prospect A.xlsx

The 2-meter temperature data at Hawthorne were collected in 2009 and 2010 by Kratt and others from the Great Basin Center for Geothermal Energy at UNR. Data were first presented in Kratt, C., Sladek, C., Coolbaugh, M., (2010). Boom and bust with the latest 2m temperature surveys: Dead Horse Wells, Hawthorne Army Depot, Terraced Hills, and other areas in Nevada. Transactions, Geothermal Resources Council, 34, 567-573. The data were processed and corrected for seasonal temperature variations using the methods described in Coolbaugh, M. F., Sladek, C., Faulds, J. E., Zehner, R. E., and Oppliger, G. L., (2007). Use of rapid temperature measurements at a 2-meter depth to augment deeper temperature gradient drilling. Thirty-Second Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 22-24, SGP-TR-183.

Hawthorne 2meter temperature survey.xlsx

Results of the bulk XRD Rietveld refinements for well HWAAD-2A by sample depth (in feet) funded by the US Navy Geothermal Program Office and reported in Jones and Moore, 2012, Petrographic and X-ray Diffraction Study of 3 Wells from the Hawthorne Ammunition Depot, Mineral County, Nevada. Report prepared by the Energy and Geoscience Institute for the Navy Geothermal Program Office. 

Abundances given in weight percent of sample. Percentage of interlayering is also given where applicable. Fields marked with Tr indicate that that mineral is present in the clay sized fraction, but not detectable in the bulk XRD patterns; that it was observed in thin section, but not detected in the bulk XRD pattern; or that its abundance calculated from the Rietveld refinement was less than one weight percent. I/S = interlayered illite/smectite. C/S= interlayered chlorite/smectite. n.d.= not determinable.

Hawthorne XRD HWAAD-2A and HWAAD-3.xlsx

Compilation of publicly-available downhole temperature data for samples collected from wells in and near Hawthorne geothermal prospect A. Data include logs run by the US Navy Geothermal Program Office (HWAAD-2A, HWAAD-3, 76-19,TGH1, TGH-5ALT, TGH-10, TGH-23), and others. Data collected by the US Navy GPO are published in Blake, K., Sabin, A., Lowry, T.S., Lazaro, M., Tiedeman, A., Ayling, B., Arguello, R., and Meade, D. (2017), Hawthorne Army Depot: Update of geothermal exploration and direct use applications. Transactions, Geothermal Resources Council, 41, 11p. Meade, D., Lazaro, M., Bjornstad, S., Alm, S., Tiedeman, A., Sabin, A., Page, C. (2011), Results of the US Navy Geothermal Program Office 2010 drilling project at Hawthorne Army Depot, Nevada. Transactions, Geothermal Resources Council, 35, 193-195. and Lazaro, M., Page, C., Tiedeman, A., Sabin, A., Bjornstad, S., Alm, S., Meade, D., Shoffner, J., Mitchell, K., Crowder, B., GBCGE, and Halsey, G. (2010), United States Department of the Navy geothermal exploration leading to shallow and intermediate/deep drilling at Hawthorne Ammunition Depot, Hawthorne, NV. Transactions, Geothermal Resources Council, 34, 595-598.

Hawthorne temperature log compilation for prospect A.xlsx

Pressure-Temperature-Spinner (PTS) logs were collected in HWAAD-2A in the days immediately after drilling (funded by the US Navy Geothermal Program Office, and conducted by Tiger Energy). The well reached total depth on 3/9/2009 at 4713 ft (1436.5 m).

Hawthorne PTS surveys HWAAD-2A.xlsx

Kelly Blake from the US Navy Geothermal Program Office conducted the fracture analysis. Results and methods are reported in Blake, K. (2011), HWAAD-2A and HWAAD-3: Fracture and Stress Analysis, Hawthorne Army Deport, Hawthorne, NV Initial Assessment. Internal Navy Geothermal Program Office Technical Report, 8p. WellCAD was used to analyze the HWAAD-2A and HWAAD-3 ABI43 image logs acquired in 2009 by Southwest Exploration Services LLC. Two lengths of borehole were imaged in HWAAD-2A: 495'-1500' (151-457 m) (top section) and 1500'-4722' ( 457-1439 m) (bottom section). One length of borehole was imaged in HWAAD-3, between ~1500 ft and 4000 ft (457-1219 meters). WellCAD was used to identify natural fractures and borehole induced structures. These fracture and structure picks were then transferred to a text file and analyzed in Matlab. The Matlab analysis provided the average fracture orientation and average principal stress orientations. Natural fractures and borehole induced structures were both identified in the image log. Only tensile fractures and petal-centerline fractures were identified, no breakouts.

Hawthorne fracture data HWAAD-2A and HWAAD-3.xlsx

Link to published manuscript in Geothermics Volume 87.

Ayling B. F., & Hinz, N. H. (2020). Developing a conceptual model and power capacity estimates for a low-temperature geothermal prospect with two chemically and thermally distinct reservoir compartments, Hawthorne, Nevada, USA. Geothermics, 87.

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