Production EngineeringWell Performance
Gas Mass Velocity in an Adsorption Unit Formula
Gas Mass Velocity in an Adsorption Unit calculates gas mass velocity for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (v_g, gamma_g, P, T, z) 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, w_g equals 3,600 lb/(h*ft2).
v_gft/min
20
gamma_gdimensionless
0.65
Ppsi
800
TR
520
zdimensionless
0.9
Inputs
v_g
ft/minGas Velocity
gamma_g
dimensionlessGas Specific Gravity
P
psiOperating Pressure
T
RInlet Gas Temperature
z
dimensionlessGas Compressibility Factor
Outputs
w_g
lb/(h*ft2)
Gas Mass Velocity
v_g
ft/min
Gas Velocity
gamma_g
dimensionless
Gas Specific Gravity
P
psi
Operating Pressure
T
R
Inlet Gas Temperature
z
dimensionless
Gas Compressibility Factor
Source and review
reviewedGas Conditioning and Processing, Campbell, J.M. (1992)
Campbell, J.M. 1992. Gas Conditioning and Processing, Campbell Petroleum Series, Vol. 2, Page 391.
source conflict
SourceRelated formulas and calculators
Effective Wellbore Radius of a Well in Presence of Uniform Flux Fractures
Well Performance
Effective Wellbore Radius of a Horizontal Well – Method 1 (Anisotropic Reservoirs)
Well Performance
Effective Wellbore Radius of a Horizontal Well – van der Vlis et al. Method
Well Performance