PO.VFP.BeggsBrill.Pin Function
Description:
Calculates inlet pipe pressure using Beggs and Brill (1973), [psi]. For any wellbore inclination. Gas properties (ρg, μg, Bg) use DAK (Z-factor) and LGE (viscosity).
Excel Function Syntax:
=PO.VFP.BeggsBrill.Pin(Ql, Qg, P_out, T_degF, Rho_l, Ul, SG_gas, IFT_gl, pipe_ID, pipe_length, pipe_roughness, pipe_angle)
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]. |
| pipe_angle | Pipe angle from horizontal, [degrees]. Horizontal flow: angle = 0; Vertical well producer: angle = 90; Vertical well injector: angle = -90. |
Used in Blueprints
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Vertical Lift Performance - Beggs & Brill
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