Geothermal Engineering

Geothermal Reservoir Heat Capacity from Injection Well Fluid Properties and Rock Volume calculator

Geothermal Reservoir Heat Capacity from Injection Well Fluid Properties and Rock Volume engineering calculator.

Runnable This tool can run, but independent engineering verification has not been established.

Quick Answer

The geothermal reservoir heat capacity from injection well fluid properties and rock volume calculator computes reservoir heat capacity from the input values you provide.

Calculator

Reservoir Heat Capacity (J⁄K)
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Result Interpretation

Geothermal Reservoir Heat Capacity from Injection Well Fluid Properties and Rock Volume calculator computes Reservoir Heat Capacity in J/K using the defined engineering formula and the input values provided. Reservoir Heat Capacity is expressed in J/K. No universal acceptance threshold is defined by this calculator.

Worked Example

Verified calculation

Given:

  • Reservoir Porosity = 0.08
  • Reservoir Volume Affected by Injection = 12000000
  • Geothermal Fluid Density = 930
  • Geothermal Fluid Specific Heat Capacity = 4200
  • Rock Matrix Density = 2700
  • Rock Matrix Specific Heat Capacity = 780

Expected Result:

  • Reservoir Heat Capacity = 27000000000000

Engineering Interpretation:

Under the given input conditions, the calculated result is: Reservoir Heat Capacity = 27000000000000 J/K.

The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.

Formula / Method

reservoir heat capacity = (reservoir porosity * reservoir volume affected by injection * geothermal fluid density * geothermal fluid specific heat capacity) + ((1 - reservoir porosity) * reservoir volume affected by injection * rock matrix density * rock matrix specific heat capacity)

Reservoir Heat Capacity.

Variables

SymbolLabelRoleDescription
phi Reservoir Porosity INPUT Reservoir Porosity
V_r Reservoir Volume Affected by Injection INPUT Reservoir Volume Affected by Injection
rho_f Geothermal Fluid Density INPUT Geothermal Fluid Density
Cp_f Geothermal Fluid Specific Heat Capacity INPUT Geothermal Fluid Specific Heat Capacity
rho_r Rock Matrix Density INPUT Rock Matrix Density
Cp_r Rock Matrix Specific Heat Capacity INPUT Rock Matrix Specific Heat Capacity
Reservoir Heat Capacity Reservoir Heat Capacity OUTPUT Reservoir Heat Capacity

Calculation Steps

  1. Enter the reservoir porosity in 1.
  2. Enter the reservoir volume affected by injection in m^3.
  3. Enter the geothermal fluid density in kg/m^3.
  4. Enter the geothermal fluid specific heat capacity in J/(kg*K).
  5. Enter the rock matrix density in kg/m^3.
  6. Enter the rock matrix specific heat capacity in J/(kg*K).
  7. Step 1: Compute reservoir heat capacity.
  8. Read the reservoir heat capacity (J/K) from the results.

Frequently Asked Questions

What does this calculator calculate?

The Geothermal Reservoir Heat Capacity from Injection Well Fluid Properties and Rock Volume calculator estimates Reservoir Heat Capacity based on the input parameters you provide

Why is reservoir volume affected by injection important in this calculation?

reservoir volume affected by injection is used directly in the calculation of reservoir heat capacity. Its effect on the result depends on the complete formula and the values of the other inputs.. When you enter reservoir volume affected by injection in m^3, the calculator uses it in the engineering formula to compute the output

How should I interpret the result reservoir heat capacity?

The calculator outputs reservoir heat capacity in J/K. The result is computed directly from the input values using the defined engineering formula

What units should I use for the inputs?

Enter each value in the units shown next to the input field: Reservoir Volume Affected by Injection (m^3), Geothermal Fluid Density (kg/m^3), Geothermal Fluid Specific Heat Capacity (J/(kg*K)), Rock Matrix Density (kg/m^3), Rock Matrix Specific Heat Capacity (J/(kg*K)). Make sure all inputs use the specified units for consistent results

What assumptions does this calculator use?

This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment

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