Reservoir EngineeringReservoir Volumetrics
Original Condensate In Place from Gas In Place and Liquid Content Formula
Original Condensate In Place from Gas In Place and Liquid Content calculates original condensate in place for reservoir volumetrics workflows in reservoir engineering.
How engineers use this formula
Use this formula when the listed inputs (G, Y_c) are known and the assumptions behind the cited reservoir volumetrics 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, N_c equals 350,000 STB.
GSCF
7000000000
Y_cSTB/MMscf
50
Inputs
G
SCFOriginal Gas In Place
Y_c
STB/MMscfCondensate Liquid Content
Outputs
N_c
STB
Original Condensate In Place
G
SCF
Original Gas In Place
Y_c
STB/MMscf
Condensate Liquid Content
Source and review
reviewedAAPG Wiki solution oil-gas ratio / liquid content definition and CED Engineering condensate-yield usage.
Source