Pressure gradient for multiphase pipe flow by Beggs and Brill correlation, [psi/ft] It can be applied for any wellbore inclination and flow direction.

Excel Function Syntax

PressureGradientBeggsBrill(Ql, Rho_l, Ul, Qg, Ug, SGgas, zFactor, IFTgl, pipeID, pipeRoughness, pipeAngle, P, T)

Online Calculator

QlLiquid rate, [bbl/d]
Rho_lLiquid density, [lb/ft3]
UlLiquid viscosity, [cP]
QgGas rate, [mmscf/d]
UgGas viscosity, [cP]
SGgasGas specific gravity (air=1.0)
zFactorGas compressibility factor (Z), [dimensionless]
IFTglLiquid-gas interfacial (surface) tension, [dynes/cm]
pipeIDPipe inner diameter, [in]
pipeRoughnessPipe relative roughness, [dimensionless]
pipeAnglePipe angle from horizontal, [degrees] Horizontal flow: angle = 0; Vertical well producer: angle = 90; Vertical well injector: angle = -90;
PPressure, [psia]
TTemperature, [degF]