I have a choke valve on wellhead, then pipeline from well to EPF. I need to calculate:
1. pressure drop on choke
2. pressure drop in pipe
3. diameter of this choke valve
I have pressure, flow, temperature upstream choke I know the pressure downstream this choke (in end point). I use Hysys steady state V 7.3 for it.
Pressure upstream choke valve 150 barg
Pressure on EPF (stream OUT) should be 35 barg.
Temperature upstream choke valve +40 C
Flow - 100 000 sm3/day
Pipeline - shc 80, 4" pipe, new pipe, without any isolation
Lenght - 1200 m. with out elevation change
Belowground - 1.2 m. Temperature ambient 0 C.
Components: mol fractions
Methane - 0.8
Ethane - 0.1
Propane - 0.02
Butane - 0.03
Total - 1
My sketch in attaced file. Please help