Friday, July 13, 2018 12:26 pm

The objective of this project is to use a multi-disciplinary, three-tiered approach to assess the geothermal resource and determine the feasibility of implementing a large-scale, direct-use facility for the Hawthorne Army Depot (HAD) and the various town and county facilities in Hawthorne, Nevada. This assessment directly targets a geothermal resource recently characterized by the Navy Geothermal Program Office (GPO) as part of a focused exploration and development campaign.

This data set contains: Excel file of the temperature at depth logs; Zip file containing shapefiles of gravity magnitude and base data for the Hawthorne Geothermal area; Word doc files containing HWAD geothermal report, figures and local stratigraphy; Zip folder containing PDF files of relevant HWAD document; Zip folder containing JPEGs of the John Oldow maps; Zip folder containing MXDs, xls, and dbf files of the Hawthorne Geothermal area and figures; Zip folder containing Hawthorne Geothermal data from Epsilon Excel file of the temperature at depth logs for HWAD-4, HAD-1, HWAD-2A, HWAD-3, and 76-19

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Tuesday, June 19, 2018 2:01 pm

We have conducted aqueous speciation analyses of the Great Salt Lake (GSL) brine sample (Table 1) and a mock geo sample (Table 2) spiked with 1 ppb Tb and 100 ppb Tb. The GSL speciation (Figure 1) aligns with our basic speciation expectations that strong carbonate complexes would form at mid to higher pH's. Although we expected strong aqueous complexes with fluorides at neutral pH and with chlorides, and hydroxides at low pH, we observe that the dominant species in the low to mid pH range to be Tb3+ as a free ion. Still, we do see the presence of fluoride and chloride complexes within the expected low to mid pH range. Microsoft Excel spreadsheet including aqueous chemistry data and Tb speciation for Great Salt Lake brine and mock geo samples

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Tuesday, June 19, 2018 2:01 pm

The current uncertainty in the global supply of rare earth elements (REEs) necessitates the development of novel extraction technologies that utilize a variety of REE source materials. Herein, we examined the techno-economic performance of integrating a biosorption approach into a large-scale process for producing salable total rare earth oxides (TREOs) from various feedstocks. An airlift bioractor is proposed to carry out a biosorption process mediated by bioengineered rare earth-adsorbing bacteria. Techno-econmic asssements were compared for three distinctive categories of REE feedstocks requiring different pre-processing steps. Key parameters identified that affect profitability include REE concentration, composition of the feedstock, and costs of feedstock pretreatment and waste management. Among the 11 specific feedstocks investigated, coal ash from the Appalachian Basin was projected to be the most profitable, largely due to its high-value REE content. Its cost breakdown includes pre-processing (primarily leaching) (8077.71%), biosorption (1619.04%), and oxalic acid precipitation and TREO roasting (3.35%). Surprisingly, biosorption from the high-grade Bull Hill REE ore is less profitable due to high material cost and low production revenue. Overall, our results confirmed that the application of biosorption to low-grade feedstocks for REE recovery is economically viable. Excel spreadsheets including synopsis, potential growth media, mass balance sheet, geothermal brine REE concentrations, estimated profits, REE price data, costs, cost comparisons, cash flow, graphs of results, and additional information pertaining to the techno-economic analysis.

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Tuesday, June 19, 2018 2:01 pm

The data files below summarize the results from various experiments testing properties of high-temperature self-healing inorganic cement composites. These properties include cement-carbon steel bond strength, Young's modulus recovery, matrix recovery strength, and compressive strength and Yonug's modulus for cement composites modified with Pozzolanic Clay additives. Bond strength data for cement composites adhering to carbon steel cured for 1 day at 300degC in three different environments (water, sodium carbonate, geothermal brine), de-bonded and healed for 5 days at 300degC in the same environments. The original (before the de-bonding) and recovered bond strengths and Young's modulus are reported for alkali activated cement (TSRC: Calcium Aluminate Cement/ Fly Ash F/ Sodium metasilicate), chemical cement (CAP: Calcium Aluminate Cement/ Fly Ash F/ Sodium hexaphosphate), Slag-based- and Portland-based cements (class G modified with silica) and for these composites modified with 5 or 10% of Micro Glass Fibers (MGF). The original composites and 5% MGF-modified composites also included 10 or 5% (respectively) of Micro Carbon Fibers (MCF) to control crack formation and propagation.

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Tuesday, June 19, 2018 2:01 pm

An important consideration for the process design is cell immobilization-enabled flow-through operation. Large-scale biosorption relies on cells that are immobilized on a supporting substrate and used to 'attract' metal ions. Cell immobilization allows easy separation of the feed solution and REEs that are attached to the cell surface. It also allows continuous operation without the need of energy-intensive centrifugation or filtration. Lightweight, high surface area, low cost (~$200/m3) high-density polyethylene (HDPE) plastic disks are used as cell carriers for biofilm formation. Computer aided drawing of the airlift bioreactor design and process flow diagram. Includes synopsis of the design.

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Tuesday, June 19, 2018 2:01 pm

Data resources were derived from a passive seismic survey of the northern St. Helens Shear Zone on geothermal leases 12-24 km north of Mount St. Helens for phase 2 of the Geothermal Play-Fairway Analysis of Washington State Prospects. A 20 seismic station array of broadband seismometers was deployed with irregular spacing (1-4 km) over an area of 12 km to image seismogenic features and their damage zones in the shallow crust. IRIS DMC network page to access seismometer waveform data.

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Tuesday, June 19, 2018 2:01 pm

This submission includes an Electricity Generation Summary, Maintenance Logs, Detailed Operations Data, Operating Cost Summary, and an Operations overview at the Paisley Oregon Geothermal Plant.

Data uploaded for SVEC by Tom Williams, NREL 2016 operating data recorded at 1 hour intervals for Surprise Valley binary cycle geothermal power plant. Data includes ambient weather conditions, pressures, temperatures and flow rates for key points in the plant. Operational electric generation is reported.

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Tuesday, June 19, 2018 2:01 pm

This set of data contains raw and processed 2D and 3D seismic data from the Utah FORGE study area near Roosevelt Hot Springs. The zipped archives numbered from 1-100 to 1001-1122 contain 3D seismic uncorrelated shot gatherers SEG-Y files. The zipped archives numbered from 1-100C to 1001-1122C contain 3D seismic correlated shot gatherers SEG-Y files. Other data have intuitive names. This archive contains SEG-Y files 901-1122, from a total of 1122 SEG-Y files, from correlated shot gatherers. This is from a 3D seismic survey.

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Tuesday, June 19, 2018 2:01 pm

This submission contains Downhole geophysical logs associated with Wister, CA Wells 12-27 and 85-20. The logs include Spontaneous Potential (SP), HILT Caliper (HCAL), Gamma Ray (GR), Array Induction (AIT), and Neutron Porosity (NPOR) data. Also included are a well log, Injection Test, Pressure Temperature Spinner log, shut in temperature survey, a final well schematic, and files about the well's location and drilling history. This submission also contains data from a three-dimensional (3D) multi-component (3C) seismic reflection survey on the Wister Geothermal prospect area in the northern portion of the Imperial Valley, California. The Wister seismic survey area was 13.2 square miles.

(Resistivity image logs (Schlumberger FMI) in 85-20 indicate that maximum horizontal stress (Shmax) is oriented NNE but that open fractures are oriented suboptimally). Geothermal Well 85-20 Run 1 Downhole Geophysics Log with Spontaneous Potential (SP), HILT Caliper (HCAL), Gamma Ray (GR), and Array Induction (AIT) data. Also includes associated *LAS file.

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Tuesday, June 19, 2018 2:01 pm

California State University Long Beach evaluated hydraulic connectivity among geothermal wells using Periodic Hydraulic Testing (PHT) and Distributed Acoustic Sensing (DAS). The principal was to create a pressure signal in one well and observe the responding pressure signals in one or more observation wells to assess the permeability and storage of the fracture network that connects the two wells. DAS measured strain at mHz frequency in monitoring wells in response to PHT. DAS file sampled at 1kHz
with a standard fiber optic cable during the 240 second period step test at well FSE13.

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Tuesday, June 19, 2018 2:01 pm

These data were collected in the laboratory located at California State University Long Beach. They consist of DAS data collected from a fiber optic cable placed in a tank of water, subjected to oscillating head. These tests are described in the article linked below. Link to The Leading Edge SEG publication describing fluid pressure sensing with fiber-optic distributed acoustic sensing

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Tuesday, June 19, 2018 2:00 pm

California State University Long Beach evaluated hydraulic connectivity among geothermal wells using Periodic Hydraulic Testing (PHT) and Distributed Acoustic Sensing (DAS). The principal was to create a pressure signal in one well and observe the responding pressure signals in one or more observation wells to assess the permeability and storage of the fracture network that connects the two wells. DAS measured strain at mHz frequency in monitoring wells in response to PHT. DAS file sampled at 1kHz with a standard fiber optic cable during the 240 second period step test at well FSE10
.

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Tuesday, June 19, 2018 2:00 pm

This set of data contains raw and processed 2D and 3D seismic data from the Utah FORGE study area near Roosevelt Hot Springs. The zipped archives numbered from 1-100 to 1001-1122 contain 3D seismic uncorrelated shot gatherers SEG-Y files. The zipped archives numbered from 1-100C to 1001-1122C contain 3D seismic correlated shot gatherers SEG-Y files. Other data have intuitive names. 3D seismic survey velocity data

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Tuesday, June 19, 2018 2:00 pm

This dataset contains maps of deformation covering Raft River, Idaho from 2007 to 2010 calculated from interferometric synthetic aperture radar data. This dataset is used in the study entitled "Inferring geothermal reservoir processes at the Raft River Geothermal Field, Idaho, USA through modeling InSAR-measured surface deformation" by F. Liu, et al. This dataset was derived from raw SAR data from the Envisat satellite missions operated by the European Space Agency (ESA) that are copyrighted by ESA and were provided through the WInSAR consortium at the UNAVCO facility. All pair directories use the image acquired on 3/11/2007 as a reference image.

To view specific information for each grd file, please use the GMT command "grdinfo"
- e.g., for grd file In20070311_20071111/drho_utm.grd, use terminal command:

grdinfo In20070311_20071111/drho_utm.grd
Digital elevation model (DEM) used in interferometric processing in SRTM with 90 meter resolution

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Tuesday, June 19, 2018 2:00 pm

The data set shows performance of economical calcium phosphate cement (Fondu) blended with fly ash, class F (FAF) in carbon steel corrosion protection tests (corrosion rate, corrosion current and potential), bond- and matrix strength, as well as matrix strength recovery after imposed damage at 300C. The corrosion protection and lap-shear bond strength data are given for different Fondu/FAF ratios, the matrix strength data recoveries are reported for 60/40 weight % Fondu/FAF ratios. Effect of sodium phosphate on bond strength, corrosion protection and self-healing is demonstrated. Economical chemical cement tested for carbon steel corrosion protection, bond strength and matrix self-healing

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