PO.SF.CH.AshfordPierce.Rate.SI
Description
Liquid flow rate using Ashford-Pierce (1975) subcritical correction model, [m3/d]. Extends critical flow correlations to subcritical conditions (SI units).
Formula
=LAMBDA(P_up, P_dn, d_choke, GLR, API, SG_gas, WC, T, LET(
P_up_psi, PO.UnitConverter(P_up, "kPa", "psi"),
P_dn_psi, PO.UnitConverter(P_dn, "kPa", "psi"),
d_choke_in, PO.UnitConverter(d_choke, "cm", "in"),
GLR_scfbbl, PO.UnitConverter(GLR, "sm3/m3", "scf/bbl"),
T_degF, PO.UnitConverter(T, "degC", "degF"),
result_bbld, PO.SF.CH.AshfordPierce.Rate(P_up_psi, P_dn_psi, d_choke_in, GLR_scfbbl, API, SG_gas, WC, T_degF),
PO.UnitConverter(result_bbld, "bbl/d", "m3/d")))Parameters
| Parameter | Unit | Description |
|---|---|---|
P_up |
kPa | Upstream pressure, [kPa] |
P_dn |
kPa | Downstream pressure, [kPa] |
d_choke |
cm | Choke diameter, [cm] |
GLR |
sm3/m3 | Gas-liquid ratio, [sm3/m3] |
API |
- | Oil API gravity, [degAPI] |
SG_gas |
- | Gas specific gravity (air=1) |
WC |
- | Water cut (0-1) |
T |
degC | Upstream temperature, [degC] |
Examples
| Invocation | Expected |
|---|---|
=PO.SF.CH.AshfordPierce.Rate.SI(6895, 3448, 1.27, 53.4, 35, 0.65, 0.5, 37.78) |
493.4657 |