Tuesday, September 10, 2019 12:53 pm

For the model calculation we applied EM3D using completion diagram of CaMI site and a background resistivity consistent with the borehole logs. It was also important to use the accurate position of the return electrode. We note that for the data fit the code also incorporated well casings for well INJ and the other observation well, either OB1 or OB2, in the calculation.

In summary, we demonstrate here, for this particular case, that the DC results may be a reasonable approximation to the low frequency EM data collected at CaMI. If this approximation continues to hold, then the extreme computational efficiency offered by the hierarchical modeling used in the DC simulations will permit us to explore far more model complexity, especially the pervasive and troublesome data artifacts that arise when doing EM surveys in mature, culturally developed sites.

In Brief, both the low frequency and DC simulation codes provided very consistent results that match the field data really well, indicating their capability to help monitoring borehole integrity with the low frequency EM method. DC simulation data for excitation of Observation Well 2 using a 5 Hz source frequency. Data is provided as distance form wellhead (m) and Ex field amplitude (V/m).

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Tuesday, September 10, 2019 12:53 pm

This experiment is testing the tube waves reflected from the bottom of the well. We put six single-channel geophones on the surface and a 24-channel downhole hydrophone into the well. The well is about 30 meters deep. Just a steel casing in the sand formation, no cement. The figure of processed upgoing VSP data of 5.sgy

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Thursday, August 22, 2019 1:48 pm

This is a link to Pan American Center for Earth and Environmental Studies (PACES) which facilitates the download of gravity and magnetic data. Part of the gravity data used in the Utah FORGE project can be found here. This is a link to Pan American Center for Earth and Environmental Studies (PACES) which facilitates the download of gravity and magnetic data.

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Thursday, August 22, 2019 1:48 pm

Pressure and temperature data from well stimulation gathered from various tools collected at well 58-32 during phase 2C. Description of data contained in excel file 58-32_OpenHoleStimulation.xlsx

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Thursday, August 22, 2019 1:48 pm

This is a compilation of logs and data from Well 14-2 in the Roosevelt Hot Springs area in Utah. This well is also in the Utah FORGE study area. The file is in a compressed .zip format and there is a data inventory table (Excel spreadsheet) in the root folder that is a guide to the data that is accessible in subfolders. Compilation of miscellaneous data (including geochemistry, injection test, spinner survey, flowmeter survey), pressure and temperature surveys, downhole geophysical logs, and other well logs. See data inventory spreadsheet for complete list.

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Thursday, August 22, 2019 1:48 pm

This submission contains a number of data files with vertices of meshed/interpolated surfaces used in the Phase 2B earth model. Examples include land surface (based on 10-meter DEM), the granitoid-basin fill contact, several faults, and also interpolated temperature isosurfaces for 175 and 225 degrees C.

All data are georeferenced to UTM, zone 12N, NAD 83, NAVD 88. This file contains vertices of meshed/interpolated surfaces of the interpolated temperature isosurfaces for 175 degrees C used in the Phase 2B earth model. All data are georeferenced to UTM, zone 12N, NAD 83, NAVD 88.

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Thursday, August 22, 2019 1:48 pm

Pressure and temperature data from well stimulation gathered from various tools collected at well 58-32 during phase 2C. Well 58-32 Lower Perforation Stimulation Data during Extracted from April 21, 2019 - April 24, 2019 using Pason surface instruments to isolate pumping cycles for Lower Perforations, clipped to isolate pumping and flowback by GRG - contact at www.geothermalresourcegroup.com

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Thursday, August 22, 2019 1:48 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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Thursday, August 22, 2019 1:47 pm

This dataset contains final reports regarding stress measurements, permeability measurements, and mechanical properties from the core testing of well 58-32, in PDF format, and spreadsheets containing tables from the reports. Please refer to the reports for full information regarding the tables in the spreadsheets. There is also a ReadMe.text with well coordinates. This dataset contains final reports regarding the core testing of well 58-32, in PDF format, and spreadsheets containing tables from the reports. Please refer to the reports for full information regarding the tables in the spreadsheets. These data include mechanical properties, permeability, and stress measurements. There is also a ReadMe.text with well coordinates.

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Thursday, August 22, 2019 1:47 pm

Utah FORGE phase 2C Native State Simulation zip contains the data used for the boundary conditions and subsequent native state simulation results obtained using the simulation code FALCON. Data are from the nodes of the simulation domain, with used a uniform 50m spacing over a 2500 X 2500 X 2750m domain approximately centered on the FORGE footprint. There is also a read me text file, that is included, containing metadata. The Reservoir Porosity and Upscale DFN Permeability zip contains the data used for the spatial distribution of the anisotropic permeability and porosity used in the native state simulation of the Utah FORGE site. Please contact Robert Podgorney at the Idaho National Laboratory with questions, robert.podgorney@inl.gov. There is also a read me text file included containing metadata. This file contains the data used for the boundary conditions and subsequent native state simulation results obtained using the simulation code FALCON. There is also a read me text file, that is included, containing metadata.

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Thursday, August 22, 2019 1:47 pm

The U.S. Department of Energy’s Enhanced Geothermal System (EGS) Collab project aims to improve our understanding of hydraulic stimulations in crystalline rock for enhanced geothermal energy production through execution of intensely monitored meso-scale experiments. The first experiment is being performed at the 4850 ft level of the Sanford Underground Research Facility (SURF), approximately 1.5 km below the surface at Lead, South Dakota.

Here we report on microseismic monitoring of repeated stimulation experiments and subsequent flow tests between two boreholes in the Poorman Formation. Stimulations were performed at several locations in the designated injection borehole at flow rates from 0.1 to 5 L/min over temporal durations from minutes to hours. Microseismic monitoring was performed using a dense 3D sensor array including two cemented hydrophone strings with 12 sensors at 1.75 m spacing accompanied by 18 3-C accelerometers, deployed in 6 monitoring boreholes, completely surrounding the stimulation region. Continuous records were obtained over a two-month period using a novel dual recording system consisting of a conventional 96 channel exploration seismograph and a high-performance 64 channel digitizer sampling sensors at 4 and 100 kHz respectively.

Using a standard STA/LTA triggering algorithm, we detected thousands of microseismic events with recorded energy in a frequency range generally above 3 kHz and up to 40 kHz. The locations of these events are consistent with creation of a hydraulic fracture and additional reactivation of pre-existing structures. Using manual pick refinement and double-difference relocation we are able to track the fracture growth to high precision. We estimate the times and locations of the fracture intersecting a monitoring and the production borehole using microseismic events. They are in excellent agreement with independent measurements using distributed temperature sensing, in-situ strain observations and measurements of conductivity changes. Microearthquake catalog

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Thursday, August 22, 2019 1:47 pm

These resources describe the 3D geophysical inversion modeling of gravity data at the FORGE site near Milford, Utah. FORGE is the Frontier Observatory for Research in Geothermal Energy and the site in Utah has been selected by the U.S. Dept. of Energy for a 5-year R&D program to test technologies for the development of Engineered Geothermal Systems (EGS). 3D modelling of gravity data at the FORGE site is to help characterize the subsurface geologic framework. Specifically, modelling of gravity data in 3D, used in conjunction with rock density measurements and other subsurface geologic information can provide an independent test of an existing 3D geologic model (e.g. Witter et al., 2018). Such an exercise can be useful for reducing uncertainty in 3D geologic models (Witter et al, 2019). This report provides details regarding the model parameters, data used, and geologic constraints applied to the 3D gravity modelling effort. Two different 3D density models constitute the output of the gravity modelling effort and each are discussed in this report.

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Thursday, August 22, 2019 1:47 pm

Six samples were evaluated in unconfined and triaxial compression, their data are included in separate excel spreadsheets, and summarized in the word document. Three samples were plugged along the axis of the core (presumed to be nominally vertical) and three samples were plugged perpendicular to the axis of the core. A designation of "V"indicates vertical or the long axis of the plugged sample is aligned with the axis of the core. Similarly, "H" indicates a sample that is nominally horizontal and cut orthogonal to the axis of the core. Stress-strain curves were made before and after the testing, and are included in the word doc.. The confining pressure for this test was 2800 psi. A series of tests are being carried out on to define a failure envelope, to provide representative hydraulic fracture design parameters and for future geomechanical assessments. The samples are from well 52-21, which reaches a maximum depth of 3581 ft +/- 2 ft into a gneiss complex. This is a spreadsheet that summarizes the important data from each of the six tests.

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Thursday, August 22, 2019 1:47 pm

This submission contains a number of data files with vertices of meshed/interpolated surfaces used in the Phase 2B earth model. Examples include land surface (based on 10-meter DEM), the granitoid-basin fill contact, several faults, and also interpolated temperature isosurfaces for 175 and 225 degrees C.

All data are georeferenced to UTM, zone 12N, NAD 83, NAVD 88. This file contains vertices of meshed/interpolated surfaces of the interpolated temperature isosurfaces for 225 degrees C used in the Phase 2B earth model. All data are georeferenced to UTM, zone 12N, NAD 83, NAVD 88.

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Thursday, August 22, 2019 1:47 pm

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 ASCII grid surfaces for the Portland and Tualatin Basins including a DEM of modern topography, the top of Columbia River Basalt (CRB), the base of CRB, and basement. It also includes three isochore (thickness) maps between these intervals. In addition, there is an ArcGIS attribute table for associated data points, a map of data types used to constrain the top of CRB, and cross-sections, all made using IHS Kingdom Suite, Petrosys PRO, ESRI ArcGIS, and Adobe Illustrator software.
Relevant surfaces mapped in the Portland and Tualatin Basins for this project. These are ASCII files at 50m resolution where each grid cell corresponds to a depth or thickness in meters. The projection information is contained in the All_Grids.prj file.

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