Skip to main content
CalcPro

Archie’s Water Saturation (S_w) & Hydrocarbon Saturation Well-Logging Calculator

Easily calculate and compute archie’s water saturation (s_w) & hydrocarbon saturation well-logging calculator with accurate equations, live formulas, and expert guidance.

Connate water resistivity at reservoir temp.

Deep induction/laterolog resistivity.

Total porosity fraction (e.g. 22% = 0.22).

Pore geometry factor (typically 1.8 to 2.2; sandstones ≈ 2.0).

Wettability exponent (water-wet rock n ≈ 2.0).

Calculated Result
19.3 %

Water Sat. (S_w)

Water Sat. (S_w)

19.3 %

Water Saturation Percent Sw

19.3

Hydrocarbon Saturation Percent Sh

80.7

Formation Factor F

20.7

Water Saturated Resistivity R0 Ohm M

0.93

19.3 — %

Calculation Breakdown

  1. Applied FormulaCalculates formation water saturation (S_w %) and oil/gas hydrocarbon saturation (S_hc %) in clean sandstone and carbonate reservoirs using Archie’s classical petrophysical law.S_w = \left(\frac{a R_w}{\phi^m R_t}\right)^{1/n}, \quad S_{\text{hc}} = 1 - S_w

Archie Water Saturation (S_w) Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.04.89.71419Water Sat. (S_w)

What Is the Archie’s Water Saturation (S_w) & Hydrocarbon Saturation Well-Logging Calculator?

This tool computes archie’s water saturation (s_w) & hydrocarbon saturation well-logging calculator with high precision arithmetic.

How Does the Archie’s Water Saturation (S_w) & Hydrocarbon Saturation Well-Logging Calculator Work?

Calculates formation water saturation (S_w %) and oil/gas hydrocarbon saturation (S_hc %) in clean sandstone and carbonate reservoirs using Archie’s classical petrophysical law.

Archie’s Water Saturation (S_w) & Hydrocarbon Saturation Well-Logging Calculator Formula & Variables

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

Sw=(aRwϕmRt)1/n,Shc=1−SwS_w = \left(\frac{a R_w}{\phi^m R_t}\right)^{1/n}, \quad S_{\text{hc}} = 1 - S_w

Calculates formation water saturation (S_w %) and oil/gas hydrocarbon saturation (S_hc %) in clean sandstone and carbonate reservoirs using Archie’s classical petrophysical law.

How to Use the Archie’s Water Saturation (S_w) & Hydrocarbon Saturation Well-Logging Calculator

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

Step-by-Step Example Calculation

Archie’s Water Saturation (S_w) & Hydrocarbon Saturation Well-Logging Calculator Example

Input Values:

formationWaterResistivityRwOhmM:0.045
trueFormationResistivityRtOhmM:25
fractionalPorosityPhi:0.22
cementationExponentM:2
saturationExponentN:2
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.

\n

Related Calculators

Explore more tools and calculators in Physics Calculators

Length Converter

Convert length and distance between metric and imperial units including meters, feet, inches, kilometers, miles, and yards with exact SI definitions.

Percentage Calculator

Calculate percentages: what % X is of Y, P% of X, % change, discount price, and percentage points.

Temperature Converter

Convert temperatures between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R) with step-by-step thermodynamic formulas.

Ohm's Law & Electrical Power Calculator

Calculate Voltage (V), Current (I), Resistance (R), and Electrical Power (P) across DC circuits.

Density, Mass & Volume Calculator

Calculate density (ρ = m/V), material mass, or physical volume for solids, liquids, and gases.

Steam Turbine Surface Condenser Cooling Water Duty Calculator

Calculates surface condenser thermal heat rejection (MWth), circulating cooling water pumping volume (m³/h), and steam condensation rate.