Two Phase Flow in a meter run
Two Phase Flow in a meter run
(OP)
We are measuring Natural Gas Flow using a meter run where where we are expecting 99.84% vapor mass fraction and the remainder is NG liquids (P = 1100 psig). Yes the vapor fraction is very high, but it is still two phase flow. Will the flow calculations for pure vapor still apply? Any other considerations?





RE: Two Phase Flow in a meter run
In your case I would specify plate inspections more frequently than normal (maybe monthly instead of quarterly) to look for standing liquid. If it is there, then I'd put some sort of liquid knockout upstream of the tube.
David Simpson, PE
MuleShoe Engineering
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