Ashford-Pierce Functions
Ashford-Pierce subcritical two-phase choke model.
3 functions
PO.SF.CH.AshfordPierce.Rate(P_up, P_dn, d_choke, GLR, API, SG_gas, WC, T)
Liquid flow rate using Ashford-Pierce (1975) subcritical correction model, [bbl/d]. Extends critical flow correlations to subcritical conditions.
PO.SF.CH.AshfordPierce.Pwh(Ql, d_choke, GLR)
Wellhead pressure using Ashford-Pierce (1975) model, [psia]. Iterative solution for target rate.
PO.SF.CH.AshfordPierce.Size(Pwh, Ql, GLR)
Choke diameter using Ashford-Pierce (1975) model, [inches]. Iterative solution for target rate.