Material Properties for Brady Hot Springs Nevada USA from PoroTomo Project
The PoroTomo team has completed inverse modeling of the three data sets (seismology, geodesy, and hydrology) individually, as described previously. The estimated values of the material properties are registered on a three-dimensional grid with a spacing of 25 meters between nodes. The material properties are listed an Excel file. Figures show planar slices in three sets: horizontal slices in a planes normal to the vertical Z axis (Z normal), vertical slices in planes perpendicular to the dominant strike of the fault system (X normal), and vertical slices in planes parallel to the dominant strike of the fault system (Y normal). The results agree on the following points. The material is unconsolidated and/or fractured, especially in the shallow layers. The structural trends follow the fault system in strike and dip. The geodetic measurements favor the hypothesis of thermal contraction. Temporal changes in pressure, subsidence rate, and seismic amplitude are associated with changes in pumping rates during the four stages of the deployment in 2016. The modeled hydraulic conductivity is high in fault damage zones. All the observations are consistent with the conceptual model: highly permeable conduits along faults channel fluids from shallow aquifers to the deep geothermal reservoir tapped by the production wells.
- Research Organization:
- USDOE Geothermal Data Repository (United States); Univ. of Wisconsin, Madison, WI (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Program (EE-2C)
- Contributing Organization:
- University of Wisconsin
- DOE Contract Number:
- EE0006760
- OSTI ID:
- 1501544
- Report Number(s):
- 1124
- Availability:
- GDRHelp@ee.doe.gov
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
geothermal
energy
porotomo
seismology
geodesy
hydrology
Nevada
Brady Hot Springs
poroelastic tomography
inversion
modeling
3D
material
properties
unconsolidated
fractured
shallow
structural
trends
geology
strike
dip
thermal contraction
pressure
subsidence
pumping
hydraulic conductivity
rate
seismic amplitude
fault
zone
permeable
conduit
fluid
reservoir
conceptual
model
property
density
p-wave
s-wave
seismic
velocity
Youngs modulus
Poissons ratio
interferometry
temperature
lithology
strain rate