PetrophysicsElectrical Properties
Electrode Array Geometric Coefficient Formula
Electrode Array Geometric Coefficient calculates geometric coefficient for the electrode array for electrical properties workflows in petrophysics.
How engineers use this formula
Use this formula when the listed inputs (r_1, r_2) are known and the assumptions behind the cited electrical properties relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, G_t equals 18.849556 m.
r_1m
1
r_2m
3
Inputs
r_1
mDistance to First Electrode
r_2
mDistance to Second Electrode
Outputs
G_t
m
Geometric Coefficient for the Electrode Array
r_1
m
Distance to First Electrode
r_2
m
Distance to Second Electrode
Source and review
reviewedTheory, Measurement, and Interpretation of Well Logs, Bassiouni, Z. (1994)
Bassiouni, Z. 1994. Theory, Measurement, and Interpretation of Well Logs. SPE Textbook Series Vol. 4, Chapter 5, Page 93.
Source