Volumetric flowrate of dry gas measured at separator


Usually produced from subsurface gas phase and oil phase 


For volatile oil fluid model the gas surface flowrate  is related to gas sandface flowrate   and oil sandface flowrate  as (see derivation):

q_G =(1-R_v \, R_s)^{-1} \left( \frac{q_g}{B_g} +\frac{R_s \, q_o}{B_o} \right) 

where

oil formation volume factor between separator and sandface pressure/temperature conditions

Solution GOR at sandface pressure/temperature conditions


It simplifies for the Black Oil model to:

q_G = \frac{q_g}{B_g} 

See Also


Petroleum Industry / Upstream / Subsurface E&P Disciplines / Well Testing (WT) / Flowrate Testing / Flowrate

Well & Reservoir Surveillance ]