PO.VFP.PoettmannCarpenter.Pin Function
Description:
Calculates inlet pipe pressure using Poettmann-Carpenter (1952), [psi]. No-slip method. Gas properties (ρg, μg, Bg) use DAK (Z-factor) and LGE (viscosity).
Excel Function Syntax:
=PO.VFP.PoettmannCarpenter.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]. |
Used in Blueprints
Multiphase Correlation Comparison
Compare pressure drop predictions from all ten industry-standard multiphase flow correlations. Understanding correlation differences helps engineers select the most appropriate method for specific well conditions.