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Gamma Ray API Shale Volume Fraction (Larionov) Calculator

Easily calculate and compute gamma ray api shale volume fraction (larionov) calculator with accurate equations, live formulas, and expert guidance.

Gamma ray reading in target interval.

Baseline minimum GR in pure 100% clean quartz sand/carbonate.

Baseline maximum GR in 100% pure marine shale.

Select non-linear regional empirical rock age calibration.

Calculated Result
16.6 %

Shale Volume (Vsh)

Shale Volume (Vsh)

16.6 %

Shale Volume Vshale Percent

16.6

Linear Gamma Ray Index Igr

0.429

Net Sand Volume Percent

83.4

Applied Lithology Model

tertiaryYoung

16.6 — %

Calculation Breakdown

  1. Applied FormulaTranslates natural wireline Gamma Ray API measurements into fractional rock clay/shale volume (Vsh) using Larionov non-linear compaction models.I_{GR} = \frac{GR - GR_{min}}{GR_{max} - GR_{min}}, \quad V_{sh} = 0.083(2^{3.7 I_{GR}} - 1)

Gamma Ray Shale Volume Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.04.28.31217Shale Volume (Vsh)

What Is the Gamma Ray API Shale Volume Fraction (Larionov) Calculator?

This tool computes gamma ray api shale volume fraction (larionov) calculator with high precision arithmetic.

How Does the Gamma Ray API Shale Volume Fraction (Larionov) Calculator Work?

Translates natural wireline Gamma Ray API measurements into fractional rock clay/shale volume (Vsh) using Larionov non-linear compaction models.

Gamma Ray API Shale Volume Fraction (Larionov) Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

IGR=GR−GRminGRmax−GRmin,Vsh=0.083(23.7IGR−1)I_{GR} = \frac{GR - GR_{min}}{GR_{max} - GR_{min}}, \quad V_{sh} = 0.083(2^{3.7 I_{GR}} - 1)

Translates natural wireline Gamma Ray API measurements into fractional rock clay/shale volume (Vsh) using Larionov non-linear compaction models.

How to Use the Gamma Ray API Shale Volume Fraction (Larionov) Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Gamma Ray API Shale Volume Fraction (Larionov) Calculator Example

Input Values:

measuredGammaRayApi:65.0
cleanSandGammaRayApi:20.0
pureShaleGammaRayApi:125.0
formationAgeModel:tertiaryYoung
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required %.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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