PO.VFP.HagedornBrown.Pin

Description

Calculates inlet pipe pressure using Hagedorn and Brown (1965), [psi]. For vertical/near-vertical wells. Gas properties (ρg, μg, Bg) use DAK (Z-factor) and LGE (viscosity).

Syntax

=PO.VFP.HagedornBrown.Pin(Ql, Qg, P_out, T_degF, Rho_l, Ul, SG_gas, IFT_gl, pipe_ID, pipe_length, pipe_roughness)

Parameters

Parameter	Description
Ql	Liquid rate, [bbl/D].
Qg	Gas rate, [mmscf/D].
P_out	Outlet pipe pressure, [psi].
T_degF	Temperature at middle point of the pipe, [degF].
Rho_l	Liquid density, [lb/ft3].
Ul	Liquid viscosity, [cP].
SG_gas	Gas specific gravity, [dimensionless].
IFT_gl	Liquid-gas interfacial (surface) tension, [dynes/cm].
pipe_ID	Pipe inner diameter, [in].
pipe_length	Pipe length, [ft].
pipe_roughness	Pipe relative roughness, [dimensionless].