Achong Functions
Achong critical-flow coefficients for rate, wellhead pressure and bean size.
3 functions
PO.SF.CH.Achong.Rate(Pwh, d_choke, GLR)
Liquid flow rate using Achong (1961) critical flow correlation, [bbl/d]. Modified Gilbert for Lake Maracaibo conditions.
PO.SF.CH.Achong.Pwh(Ql, d_choke, GLR)
Wellhead pressure using Achong (1961) critical flow correlation, [psia].
PO.SF.CH.Achong.Size(Pwh, Ql, GLR)
Choke diameter using Achong (1961) critical flow correlation, [inches].