Related Resources: calculators
Gas Flow Under Laminar Conditions Equations and Calculator
Fluid Flow Hydraulic and Pneumatic Engineering and Design Menu
Hydraulic & Pneumatic Design Engineering
Gas Flow Under Laminar Viscous Conditions Equations and Calculator
Laminar flow is characterized by smooth or regular paths of particles of the fluid. The laminar flow is also referred to as streamline or viscous flow. This type of flow occurs typically at lower speeds, and the fluid tends to flow without lateral mixing.
Eq. 1
Q_{g} = k · h · (δ_{r}  δ_{wf} ) / [ 1422 · T · ( 0.5 · ln ( ( 4 · A ) / ( 1.781 · C_{A} · r_{w}^{2} ) + S) ]
Where:
k = Permeability (mD)
h = Thickness (ft)
δ_{r =} Average RealGas
PseudoPressure (psi)
δ_{wf} = RealGas Pseudoflowing Pressure (psi)
T
=
Temperature (R)
A = Drainage Area (ft^{2})
C_{A} = Shape Factor (dimensionless)
r_{w } = Pipe Radius (ft)
S = Skin (dimensionless)
Q_{g} = Gas Flow Rate
(MSCF/d)
mD = Millidarcy
MSCF/d = Thousand standard cubic feet per day
Standard
conditions are normally set at 60 degF and 14.7
Source: Reference: Ahmed, T., McKinney, P.D. 2005. Advanced Reservoir Engineering, Gulf Publishing of Elsevier, Chapter: 3, Page: 188.
Related:
 Laminar Flow Fluid Flow Review
 Reynolds Number Equation and Review
 Annular Capacity Between Casing or Hole and Drill Pipe, Tubing, or Casing Formula and Calculator
 Mass Flow Rate for Gas Pipeline Blowdown through Hole or Orifice Excel Spreadsheet Calculator
 Fractional Flow Curve Formulas and Calculator
 Gas Flow Rate Through Orifice Equations and Calculator per. ISO 5167 ISO 5167
 Flow of Air in Pipes Equation and Calculator
 Pipe Friction Calculations Within Pipe For Fluid Flow
 API Casing 4.500  5.000 Dia. Engineering Data Table Specification 5C3 of the American Petroleum Institute standardizes 14 casing sizes from 4.5 inches (11.43 cm) to 20 inches (50.80 cm) outside diameter
 Chézy and Manning's Equation Manning's equation, which is based on Chezy's equation, is method to calculate the free surface flow within a channel.

HazenWilliams Water Pressure Drop Flow Rates Calculator Equation HazenWilliams
Water Pressure Drop Flow Rates Equations and Calculator