Separator Minimum Diameter from Gas Capacity Formula
Separator Minimum Diameter from Gas Capacity calculates minimum separator inside diameter for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (q_a, F_G, V_Gmax) are known and the assumptions behind the cited well performance 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, D_min equals 2.888901 ft.
10
1
1.5256146302392357
Inputs
q_a
ft3/sActual Gas Flow Rate at Separator Conditions
F_G
fractionFraction of Vessel Cross-Section Available for Gas Flow
V_Gmax
ft/sMaximum Allowable Superficial Gas Velocity
Outputs
D_min
Minimum Separator Inside Diameter
q_a
Actual Gas Flow Rate at Separator Conditions
F_G
Fraction of Vessel Cross-Section Available for Gas Flow
V_Gmax
Maximum Allowable Superficial Gas Velocity
Source and review
reviewedJohn M. Campbell / PetroSkills. Gas-Liquid Separators Sizing Parameter.
Source