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semi-organize parameters with newlines. WIP - stub possible gradient recalibration
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‎tests/examples/Fervo_Project_Red-2026.out‎

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@@ -6,14 +6,14 @@ Simulation Metadata
66
----------------------
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GEOPHIRES Version: 3.13.1
88
Simulation Date: 2026-04-19
9-
Simulation Time: 08:55
10-
Calculation Time: 0.155 sec
9+
Simulation Time: 09:11
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Calculation Time: 0.170 sec
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***SUMMARY OF RESULTS***
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End-Use Option: Electricity
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Average Net Electricity Production: 1.88 MW
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Electricity breakeven price: 111.33 cents/kWh
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Average Net Electricity Production: 1.87 MW
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Electricity breakeven price: 111.50 cents/kWh
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Number of production wells: 1
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Number of injection wells: 1
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Flowrate per production well: 36.0 kg/sec
@@ -28,8 +28,8 @@ Simulation Metadata
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Inflation costs during construction: 1.34 MUSD
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Project lifetime: 2 yr
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Capacity factor: 90.0 %
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Project NPV: -24.32 MUSD
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Project IRR: -74.41 %
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Project NPV: -24.28 MUSD
32+
Project IRR: -74.44 %
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Project VIR=PI=PIR: 0.09
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Project MOIC: -0.84
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Project Payback Period: N/A
@@ -42,7 +42,7 @@ Simulation Metadata
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Well depth: 2.3 kilometer
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Water loss rate: 30.0 %
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Pump efficiency: 80.0 %
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Injection temperature: 54.8 degC
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Injection temperature: 56.5 degC
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Production Wellbore heat transmission calculated with Ramey's model
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Average production well temperature drop: 4.7 degC
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Flowrate per production well: 36.0 kg/sec
@@ -62,7 +62,7 @@ Simulation Metadata
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***RESERVOIR PARAMETERS***
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Reservoir Model = Multiple Parallel Fractures Model (Gringarten)
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Bottom-hole temperature: 179.42 degC
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Bottom-hole temperature: 181.69 degC
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Fracture model = Rectangular
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Well separation: fracture height: 160.00 meter
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Fracture width: 160.00 meter
@@ -71,7 +71,7 @@ Simulation Metadata
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Number of fractures: 100
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Fracture separation: 10.00 meter
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Reservoir volume: 25344000 m**3
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Reservoir hydrostatic pressure: 22066.59 kPa
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Reservoir hydrostatic pressure: 22052.96 kPa
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Plant outlet pressure: 10342.14 kPa
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Production wellhead pressure: 1551.32 kPa
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Productivity Index: 0.49 kg/sec/bar
@@ -83,15 +83,15 @@ Simulation Metadata
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***RESERVOIR SIMULATION RESULTS***
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Maximum Production Temperature: 175.2 degC
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Average Production Temperature: 174.7 degC
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Minimum Production Temperature: 173.5 degC
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Initial Production Temperature: 173.5 degC
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Average Reservoir Heat Extraction: 18.10 MW
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Maximum Production Temperature: 177.5 degC
87+
Average Production Temperature: 177.0 degC
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Minimum Production Temperature: 175.7 degC
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Initial Production Temperature: 175.7 degC
90+
Average Reservoir Heat Extraction: 18.20 MW
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Production Wellbore Heat Transmission Model = Ramey Model
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Average Production Well Temperature Drop: 4.7 degC
93-
Average Injection Well Pump Pressure Drop: 2579.6 kPa
94-
Average Production Well Pump Pressure Drop: 10782.0 kPa
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Average Injection Well Pump Pressure Drop: 2566.0 kPa
94+
Average Production Well Pump Pressure Drop: 10752.4 kPa
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***CAPITAL COSTS (M$)***
@@ -102,10 +102,10 @@ Simulation Metadata
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Drilling and completion costs per vertical injection well: 3.02 MUSD
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Drilling and completion costs per non-vertical section: 1.80 MUSD
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Stimulation costs: 1.51 MUSD
105-
Surface power plant costs: 9.97 MUSD
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Surface power plant costs: 9.92 MUSD
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Field gathering system costs: 1.60 MUSD
107-
Total surface equipment costs: 11.57 MUSD
108-
Total capital costs: 26.83 MUSD
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Total surface equipment costs: 11.52 MUSD
108+
Total capital costs: 26.78 MUSD
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***OPERATING AND MAINTENANCE COSTS (M$/yr)***
@@ -118,28 +118,28 @@ Simulation Metadata
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***SURFACE EQUIPMENT SIMULATION RESULTS***
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Initial geofluid availability: 0.15 MW/(kg/s)
121-
Maximum Total Electricity Generation: 2.59 MW
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Average Total Electricity Generation: 2.57 MW
123-
Minimum Total Electricity Generation: 2.52 MW
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Initial Total Electricity Generation: 2.52 MW
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Maximum Net Electricity Generation: 1.90 MW
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Average Net Electricity Generation: 1.88 MW
127-
Minimum Net Electricity Generation: 1.83 MW
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Initial Net Electricity Generation: 1.83 MW
129-
Average Annual Total Electricity Generation: 20.26 GWh
130-
Average Annual Net Electricity Generation: 14.81 GWh
131-
Initial pumping power/net installed power: 37.83 %
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Maximum Total Electricity Generation: 2.58 MW
122+
Average Total Electricity Generation: 2.56 MW
123+
Minimum Total Electricity Generation: 2.51 MW
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Initial Total Electricity Generation: 2.51 MW
125+
Maximum Net Electricity Generation: 1.89 MW
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Average Net Electricity Generation: 1.87 MW
127+
Minimum Net Electricity Generation: 1.82 MW
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Initial Net Electricity Generation: 1.82 MW
129+
Average Annual Total Electricity Generation: 20.20 GWh
130+
Average Annual Net Electricity Generation: 14.76 GWh
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Initial pumping power/net installed power: 37.90 %
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Average Pumping Power: 0.69 MW
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Heat to Power Conversion Efficiency: 10.37 %
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Heat to Power Conversion Efficiency: 10.28 %
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************************************************************
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* HEATING, COOLING AND/OR ELECTRICITY PRODUCTION PROFILE *
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************************************************************
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YEAR THERMAL GEOFLUID PUMP NET FIRST LAW
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DRAWDOWN TEMPERATURE POWER POWER EFFICIENCY
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(degC) (MW) (MW) (%)
141-
1 1.0000 173.46 0.6912 1.8272 10.2049
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2 1.0086 174.94 0.6911 1.8857 10.4015
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1 1.0000 175.73 0.6903 1.8212 10.1137
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2 1.0085 177.21 0.6902 1.8791 10.3067
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*******************************************************************
@@ -148,8 +148,8 @@ Simulation Metadata
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YEAR ELECTRICITY HEAT RESERVOIR PERCENTAGE OF
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PROVIDED EXTRACTED HEAT CONTENT TOTAL HEAT MINED
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(GWh/year) (GWh/year) (10^15 J) (%)
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1 14.7 142.3 6.68 7.12
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2 14.9 143.1 6.17 14.28
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1 14.7 143.1 6.84 7.00
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2 14.9 143.9 6.32 14.05
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********************************
@@ -159,6 +159,6 @@ Year Electricity | Heat |
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Since Price Ann. Rev. Cumm. Rev. | Price Ann. Rev. Cumm. Rev. | Price Ann. Rev. Cumm. Rev. | Price Ann. Rev. Cumm. Rev. | OPEX Net Rev. Net Cashflow
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Start (cents/kWh)(MUSD/yr) (MUSD) |(cents/kWh) (MUSD/yr) (MUSD) |(cents/kWh) (MUSD/yr) (MUSD) |(USD/lb) (MUSD/yr) (MUSD) |(MUSD/yr) (MUSD/yr) (MUSD)
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________________________________________________________________________________________________________________________________________________________________________________________
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0 0.00 0.00 0.00 | 0.00 0.00 0.00 | 0.00 0.00 0.00 | 0.00 0.00 0.00 | 0.00 -26.83 -26.83
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1 15.00 2.21 2.21 | 2.50 0.00 0.00 | 2.50 0.00 0.00 | 0.00 0.00 0.00 | 0.83 1.37 -25.46
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2 15.00 2.24 4.44 | 2.50 0.00 0.00 | 2.50 0.00 0.00 | 0.00 0.00 0.00 | 0.83 1.41 -24.05
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0 0.00 0.00 0.00 | 0.00 0.00 0.00 | 0.00 0.00 0.00 | 0.00 0.00 0.00 | 0.00 -26.78 -26.78
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1 15.00 2.20 2.20 | 2.50 0.00 0.00 | 2.50 0.00 0.00 | 0.00 0.00 0.00 | 0.83 1.37 -25.41
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2 15.00 2.23 4.43 | 2.50 0.00 0.00 | 2.50 0.00 0.00 | 0.00 0.00 0.00 | 0.83 1.40 -24.01

‎tests/examples/Fervo_Project_Red-2026.txt‎

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@@ -5,52 +5,73 @@
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Reservoir Model, 1
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Reservoir Volume Option, 1
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Reservoir Density, 2800, -- per the paper phyllite + quartzite + diorite + granodiorite
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Reservoir Depth, 7600 feet, -- per the paper
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Reservoir Heat Capacity, 1000, -- [J/kg/K]
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Reservoir Thermal Conductivity, 2.7
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Number of Fractures, 100, -- per the paper
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Fracture Shape, 4, -- per the paper
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Fracture Height, 160, -- per the paper
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Fracture Width, 160, -- per the paper (distance between wellbores assumes a dipole flow field)
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Fracture Separation, 10 meter
19+
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Number of Segments, 1
18-
Gradient 1, 74, -- per the paper
21+
Gradient 1, 74
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# Gradient 1, 78, -- 191°C BHT at 7,600 ft TVD
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Plant Outlet Pressure, 1500 psi, -- per the paper
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Number of Injection Wells, 1
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Number of Production Wells, 1
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Well Geometry Configuration, 4
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Has Nonvertical Section, True
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Multilaterals Cased, True
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Number of Multilateral Sections, 2, -- Two parallel horizontal sections
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Nonvertical Length per Multilateral Section, 3250 feet, -- per the paper
34+
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Well Drilling Cost Correlation, 10, -- per the drill cost paper - works out to $400/ft
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Horizontal Well Drilling Cost Correlation, 10, -- per the drill cost paper - works out to $400/ft
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Production Flow Rate per Well, 36, -- per https://fervoenergy.com/enhanced-geothermal-has-been-proven-at-scale-heres-what-two-years-of-production-data-show/
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Production Wellhead Pressure, 225 psi, -- per https://fervoenergy.com/enhanced-geothermal-has-been-proven-at-scale-heres-what-two-years-of-production-data-show/
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Production Well Diameter, 4.276, -- Assumed ID for 5 inch casing size per https://fervoenergy.com/enhanced-geothermal-has-been-proven-at-scale-heres-what-two-years-of-production-data-show/
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Injection Well Diameter, 4.276, -- See Production Well Diameter
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Well Separation, 365 feet, -- per the paper
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Injection Temperature, 75, -- per https://fervoenergy.com/enhanced-geothermal-has-been-proven-at-scale-heres-what-two-years-of-production-data-show/. Note that this value is overridden by the lower model-calculated optimum injection temperature.
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Injection Wellbore Temperature Gain, 3, -- [degC]
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Ramey Production Wellbore Model, 1
49+
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Injectivity Index, 0.6, -- Calibrated to yield ~0.7 MW Average Pumping Power
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Productivity Index, 0.491, -- See Injectivity Index
38-
Ramey Production Wellbore Model, 1
39-
Utilization Factor, .9
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Water Loss Fraction, 0.3, -- per https://fervoenergy.com/enhanced-geothermal-has-been-proven-at-scale-heres-what-two-years-of-production-data-show/
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Utilization Factor, .9
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Maximum Drawdown, 1, -- no redrilling considered
42-
Ambient Temperature, 8 degC, -- per the paper. Published ambient is 10.27 degC
43-
Surface Temperature, 8 degC, -- per the paper. Published ambient is 10.27 degC
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Ambient Temperature, 10.27
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Surface Temperature, 10.27
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End-Use Option, 1, -- electricity as the main product
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Plant Lifetime, 2, -- 614 days of operation from April 2023 to April 2026
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Power Plant Type, 2, -- supercritical binary cycle
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End-Use Efficiency Factor, .9
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Circulation Pump Efficiency, 0.80, -- per the paper
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Economic Model, 3, -- BICYCLE Levelized Cost Model
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Starting Electricity Sale Price, 0.15
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Ending Electricity Sale Price, 1.00, -- essentially no limit as the rate can rise continuously with inflation
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Electricity Escalation Rate Per Year, 0.004053223, -- End up being about 2% inflation
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Electricity Escalation Start Year, 1
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Fraction of Investment in Bonds, .5, -- Required for BICYCLE model
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Combined Income Tax Rate, .3, -- Required for BICYCLE model
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Gross Revenue Tax Rate, 0, -- Required for BICYCLE model
@@ -60,5 +81,6 @@ Inflation Rate, .02, -- Required for BICYCLE model
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Investment Tax Credit Rate, 0, -- Required for BICYCLE model
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Inflation Rate During Construction, 0.05
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Property Tax Rate, 0, -- Required for BICYCLE model
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Print Output to Console, 1
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Time steps per year, 12

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