Reservoir Engineering

Reservoir STOIIP Monte Carlo Uncertainty Quantifier Calculator

Reservoir STOIIP Monte Carlo Uncertainty Quantifier engineering calculator.

Quick Answer

Calculate Reservoir STOIIP Monte Carlo Uncertainty Quantifier

Calculator

STOIIP Relative Uncertainty (Dimensionless) (fraction)
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Result Interpretation

Reservoir STOIIP Monte Carlo Uncertainty Quantifier Calculator computes STOIIP Relative Uncertainty (Dimensionless) in fraction using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Gross Reservoir Area = 1200000
  • Net Pay Thickness = 10
  • Average Effective Porosity = 0.22
  • Initial Oil Saturation = 0.68
  • Oil Formation Volume Factor = 1.25

Expected Result:

  • STOIIP Relative Uncertainty (Dimensionless) = 0.3401470270339

Engineering Interpretation:

Under the given input conditions, the calculated result is: STOIIP Relative Uncertainty (Dimensionless) = 0.3401470270339 fraction.

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

Formula / Method

Dimensionless = sqrt(pow(0.15 * gross reservoir area / gross reservoir area, 2) + pow(0.20 * net pay thickness / net pay thickness, 2) + pow(0.12 * average effective porosity / average effective porosity, 2) + pow(0.18 * initial oil saturation / initial oil saturation, 2) + pow(0.08 * oil formation volume factor / oil formation volume factor, 2))

Formula family: formula_reservoir_stoiip_uncertainty_quantifier

Variables

SymbolLabelRoleDescription
area Gross Reservoir Area INPUT Gross Reservoir Area
net_pay Net Pay Thickness INPUT Net Pay Thickness
porosity Average Effective Porosity INPUT Average Effective Porosity
saturation Initial Oil Saturation INPUT Initial Oil Saturation
formation_volume_factor Oil Formation Volume Factor INPUT Oil Formation Volume Factor
result STOIIP Relative Uncertainty (Dimensionless) OUTPUT STOIIP Relative Uncertainty (Dimensionless)

Calculation Steps

  1. Enter the gross reservoir area in m2.
  2. Enter the net pay thickness in m.
  3. Enter the average effective porosity in fraction.
  4. Enter the initial oil saturation in fraction.
  5. Enter the oil formation volume factor in rb/stb.
  6. Step 1: Compute stoiip relative uncertainty (dimensionless).
  7. Read the stoiip relative uncertainty (dimensionless) (fraction) from the results.

Engineering Summary

Calculate Reservoir STOIIP Monte Carlo Uncertainty Quantifier

Frequently Asked Questions

What does this calculator calculate?

The Reservoir STOIIP Monte Carlo Uncertainty Quantifier Calculator estimates STOIIP Relative Uncertainty (Dimensionless) based on the input parameters you provide

Why is gross reservoir area important in this calculation?

gross reservoir area is directly proportional to stoiip relative uncertainty (dimensionless). When you enter gross reservoir area in m2, the calculator uses it in the engineering formula to compute the output

How should I interpret the result stoiip relative uncertainty (dimensionless)?

The calculator outputs stoiip relative uncertainty (dimensionless) in fraction. 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: Gross Reservoir Area (m2), Net Pay Thickness (m), Average Effective Porosity (fraction), Initial Oil Saturation (fraction), Oil Formation Volume Factor (rb/stb). 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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