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Fervo_Project_Cape-3.txt
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Fervo_Project_Cape-3.txt
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# Case Study: Fervo Cape Station 3: 400 MWe Production
# Extrapolation from Fervo results pre-published 2024-09-10 at https://eartharxiv.org/repository/view/7665/ to 400MWe capacity.
# Norbeck J., Gradl C., and Latimer T. 2024.
# "Deployment of Enhanced Geothermal System technology leads to rapid cost reductions and performance improvements."
# https://doi.org/10.31223/X5VH8C
Reservoir Model, 1
Reservoir Volume Option, 1
Reservoir Density, 2800
Reservoir Depth, 8500 feet, -- https://pangea.stanford.edu/ERE/db/GeoConf/papers/SGW/2024/Fercho.pdf
Reservoir Heat Capacity, 790
Reservoir Thermal Conductivity, 3.05
Reservoir Porosity, 0.0118
Reservoir Impedance, 0.001
Number of Fractures, 149
Fracture Shape, 4
Fracture Height, 2000
Fracture Width, 10000
Fracture Separation, 30
Number of Segments, 1
Gradient 1, 74, -- temperature at 8500 ft: 200 degC (https://pangea.stanford.edu/ERE/db/GeoConf/papers/SGW/2024/Fercho.pdf); 228.89 degC @ 9824 ft (https://doi.org/10.31223/X5VH8C)
Number of Injection Wells, 39
Number of Production Wells, 39
Production Flow Rate per Well, 120, -- peak flow reported in paper
Production Well Diameter, 7
Injection Well Diameter, 7
Well Separation, 365 feet
Injection Temperature, 60 degC
Injection Wellbore Temperature Gain, 3
Plant Outlet Pressure, 1000 psi
Production Wellhead Pressure, 325 psi
Ramey Production Wellbore Model, 1
Utilization Factor, .9
Water Loss Fraction, 0.05
Maximum Drawdown, 1
Ambient Temperature, 10 degC
Surface Temperature, 10 degC
End-Use Option, 1
Plant Lifetime, 20
Power Plant Type, 2
Circulation Pump Efficiency, 0.80
Surface Plant Capital Cost Adjustment Factor, 0.71, -- $1900/kW (peak production)
Exploration Capital Cost, 30
Well Drilling and Completion Capital Cost, 3.84, -- Assume cost continues to decrease from $4.8M/well (https://houston.innovationmap.com/fervo-energy-drilling-utah-project-2667300142.html)
Reservoir Stimulation Capital Cost, 234, -- 78 wells @ $3M/well
Economic Model, 3
Starting Electricity Sale Price, 0.15
Ending Electricity Sale Price, 1.00
Electricity Escalation Rate Per Year, 0.004053223
Electricity Escalation Start Year, 1
Fraction of Investment in Bonds, .5
Combined Income Tax Rate, .3
Gross Revenue Tax Rate, 0
Inflated Bond Interest Rate, .05
Inflated Equity Interest Rate, .08
Inflation Rate, .02
Investment Tax Credit Rate, .3
Inflation Rate During Construction, 0.05
Property Tax Rate, 0
Time steps per year, 10
Maximum Temperature, 500
Well Geometry Configuration, 4
Has Nonvertical Section, True
Multilaterals Cased, True
Number of Multilateral Sections, 3
Nonvertical Length per Multilateral Section, 4700 feet