PO.VFP.Gas.Pin Function

Description:

Calculates inlet pipe pressure for single phase pipe flow of gas (compressible fluid), [psi].

Excel Function Syntax:

=PO.VFP.Gas.Pin(Qg, P_out, T_degF, SG_gas, Ug, Z, pipe_ID, pipe_length, pipe_roughness, pipe_angle)

Parameters:

Parameter	Description
Qg	Gas rate, [mmscf/D].
P_out	Outlet pipe pressure, [psi].
T_degF	Temperature at middle point of the pipe, [degF].
SG_gas	Gas specific gravity, [dimensionless].
Ug	Gas viscosity, [cP].
Z	Gas compressibility factor (Z), [dimensionless].
pipe_ID	Pipe inner diameter, [in].
pipe_length	Pipe length, [ft].
pipe_roughness	Pipe relative roughness, [dimensionless].
pipe_angle	Pipe angle from horizontal, [degrees]. Horizontal flow: angle = 0; Vertical well producer: angle = 90; Vertical well injector: angle = -90.