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Permalink Reply by Brian Powers on March 8, 2013 at 2:52am

Mark -

If you are in the meter business and install/service orifice meters, then you are probaly aware that orifice meters and the equations that calculate volume were developed for single phase flow only, e.g. dry gas or liquids with no gas content.

If you measure the liquids in the condensate tank downstream of the onsite separator and the dry gas, you can calculate a rough gas to flashed liquids ratio.

 

To get a more accurate determination of the wet gas BTU and NGL content, the wet gas stream is sampled into an evacuated stainless steel cylinder and the the gas stream is passed through a gas chromatograph that determines the NGL components (C2, C3, iC4, nC4, C5, C6, C7+, etc)

 

I hope this helps,

 

Brian

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Permalink Reply by Mark on March 8, 2013 at 3:10am

thanks Brian,

GE has new ultrasonic /transit time meters that will produce a flow signal and percent liquid concentration.

Does a well's Gas consistency generally stay the same or will spot sample test be done every so often?

 

 

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