Gas Lift Valves Functions
Dome pressure and throughput for injection-pressure-operated valves.
6 functions
PO.GL.Valve.Pdome
Calculates absolute dome pressure at depth from surface dome pressure, real-gas nitrogen charge, [psi].
PO.GL.Valve.TRO
Calculates test rack opening pressure at 60°F, absolute, with atmospheric pressure on the tubing side, [psi].
PO.GL.Valve.Pvc
Calculates valve closing pressure; equals the dome pressure for a valve without a spring, [psi].
PO.GL.Valve.Spread
Calculates valve spread (opening minus closing pressure), [psi].
PO.GL.Valve.ThornhillCraver
Calculates gas throughput using Thornhill-Craver equation, [mscf/d].
PO.GL.Valve.PPE
Calculates production pressure effect factor (PPEF), {1}.