Deep Direct-Use Feasibility Study Numerical Modeling and Uncertainty Analysis using iTOUGH2 for West Virginia University MC_allPara2_output.7z_AppendixFigure8

To reduce the geothermal exploration risk, a feasibility study is performed for a deep direct-use system proposed at the West Virginia University (WVU) Morgantown campus. This study applies numerical simulations to investigate reservoir impedance and thermal production. Because of the great depth of the geothermal reservoir, few data are available to characterize reservoir features and properties. As a result, the study focuses on the following three aspects: 1. model choice for predicting reservoir impedance and thermal breakthrough: after investigating three potential models (one single permeability model and two dual permeability models) for flow through fractured rock, it is decided to use single permeability model for further analysis; 2. well placement (horizontal vs. vertical) options: horizontal well placement seems to be more robust to heterogeneity and the impedance is more acceptable; 3. Prediction uncertainty: the most influential parameters are identified using a First-Order-Second-Moment uncertainty propagation analysis, and the uncertain range of the model predictions is estimated by performing a Monte Carlo simulation. Heterogeneity has a large impact on the perdition, therefore, is considered in the predictive model and uncertainty analysis. The numerical model results and uncertainty analysis are used for economic analysis. The dataset submitted here support the described study. Manuscript is submitted to Geothermics, will be linked once paper is accepted. Contains output files used in the Monte Carlo simulation analysis. Results are used in generating Figure 8 in the manuscript and final report. iTOUGH2 direct output file is heti_all.out. The middle part is extracted into OUTPUT file. Then a python code “stat.py” is used to summarize results into “plot.dat” for plotting.

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Metadata Source

Additional Info

Field Value
Citation Date 2019-12-20T00:00:00-07:00

Harvest Information

Original ID f0000008-58cc-4372-a567-000000001197
Index Date 2020-02-07T12:05:56-07:00
Original Format ISO-USGIN
Original Version 1.2

Author

Name Nagasree Garapati
Position primary contact
Organization West Virginia University
Email nagasree.garapati@mail.wvu.edu

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North Bound 39.913322339969
South Bound 38.933992306471
East Bound -78.759578515625
West Bound -80.835893359375