Pycnometer Volume Correction Formula
Pycnometer Volume Correction calculates corrected real pycnometer volume for rock properties workflows in petrophysics.
How engineers use this formula
Use this formula when the listed inputs (V_k, T_t, T_k, Omega) are known and the assumptions behind the cited rock 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, V_g equals 50.0078 mL.
50
30
20
0.0000156
Inputs
V_k
mLCalibration Volume of Specific Gravity Bottle
T_t
deg CTest Temperature
T_k
deg CCalibration Temperature
Omega
1/deg CPycnometer Material Expansion Constant
Outputs
V_g
Corrected Real Pycnometer Volume
V_k
Calibration Volume of Specific Gravity Bottle
Omega
Pycnometer Material Expansion Constant
T_t
Test Temperature
T_k
Calibration Temperature
Source and review
reviewedPetroleum and Natural Gas Laboratory Course Notes, I-Fluid Properties, Mihcakan, I. M., Alkan, K. H., Ugur, Z. (2001)
Mihcakan, I. M., Alkan, K. H., and Ugur, Z. 2001. Petroleum and Natural Gas Laboratory Course Notes, I-Fluid Properties, ITU Petroleum and Natural Gas Engineering, Page 1-4.