Geology Engineering

Core Recovery Ratio Correction Factor for Lithological Stress Anisotropy Calculator

Core Recovery Ratio Correction Factor for Lithological Stress Anisotropy engineering calculator.

Quick Answer

Calculate Core Recovery Ratio Correction Factor for Lithological Stress Anisotropy

Calculator

Core Recovery Ratio Correction Factor (dimensionless)
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Result Interpretation

Core Recovery Ratio Correction Factor for Lithological Stress Anisotropy Calculator computes Core Recovery Ratio Correction Factor in dimensionless using the defined engineering formula and the input values provided.

Worked Example

Verified calculation

Given:

  • Rock Quality Designation = 75
  • Rock Mass Strength Scaling Factor = 40000000
  • Vertical In-Situ Stress = 20000000
  • Maximum Horizontal In-Situ Stress = 15000000
  • Minimum Horizontal In-Situ Stress = 8000000

Expected Result:

  • Core Recovery Ratio Correction Factor = 0.11190333919348

Engineering Interpretation:

Under the given input conditions, the calculated result is: Core Recovery Ratio Correction Factor = 0.11190333919348 dimensionless.

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

core recovery ratio correction factor = (1.0 + (maximum horizontal in-situ stress - minimum horizontal in-situ stress) / vertical in-situ stress) * (1.0 - 0.5 * pow((rock mass strength scaling factor / vertical in-situ stress), 0.33)) * exp(-0.02 * rock quality designation)

Formula family: formula_geology_core_recovery_ratio_correction_factor_calculator_for_lithological_stress_anisotropy

Variables

SymbolLabelRoleDescription
sigma_h_max Maximum Horizontal In-Situ Stress INPUT Maximum Horizontal In-Situ Stress
sigma_h_min Minimum Horizontal In-Situ Stress INPUT Minimum Horizontal In-Situ Stress
sigma_v Vertical In-Situ Stress INPUT Vertical In-Situ Stress
K_ucs Rock Mass Strength Scaling Factor INPUT Rock Mass Strength Scaling Factor
RQD Rock Quality Designation INPUT Rock Quality Designation
core_recovery_ratio_correction_factor Core Recovery Ratio Correction Factor OUTPUT Core Recovery Ratio Correction Factor

Calculation Steps

  1. Enter the maximum horizontal in-situ stress in Pa.
  2. Enter the minimum horizontal in-situ stress in Pa.
  3. Enter the vertical in-situ stress in Pa.
  4. Enter the rock mass strength scaling factor in Pa.
  5. Enter the rock quality designation in percent.
  6. Step 1: Compute core recovery ratio correction factor.
  7. Read the core recovery ratio correction factor (dimensionless) from the results.

Engineering Summary

Calculate Core Recovery Ratio Correction Factor for Lithological Stress Anisotropy

Frequently Asked Questions

What does this calculator calculate?

The Core Recovery Ratio Correction Factor for Lithological Stress Anisotropy Calculator estimates Core Recovery Ratio Correction Factor based on the input parameters you provide

Why is maximum horizontal in-situ stress important in this calculation?

maximum horizontal in-situ stress is directly proportional to core recovery ratio correction factor. When you enter maximum horizontal in-situ stress in Pa, the calculator uses it in the engineering formula to compute the output

How should I interpret the result core recovery ratio correction factor?

The calculator outputs core recovery ratio correction factor in dimensionless. 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: Maximum Horizontal In-Situ Stress (Pa), Minimum Horizontal In-Situ Stress (Pa), Vertical In-Situ Stress (Pa), Rock Mass Strength Scaling Factor (Pa), Rock Quality Designation (percent). 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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