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A specific case of cross-phase fluid exchange


In BO and MBO PVT models when oil and gas phases reach chemical equilibrium the total mass of oil and gas components spread between oil and gas phases according to ambient pressure 

LaTeX Math Inline
bodyp
 and temperature 
LaTeX Math Inline
bodyT
.

...

the total mass of gas component

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bodym_G = m_{Gg}(p,T) + m_{Go}(p,T)


wherethen

the mass share of oil component in oil phase 

LaTeX Math Inline
bodym_{Oo}(p,T)
 

...

are all functions of pressure 

LaTeX Math Inline
bodyp
 and temperature 
LaTeX Math Inline
bodyT
.


The quantitative measure of cross-phase exchange is given by Soliton GOR (

LaTeX Math Inline
bodyR_s
) and Vaporized Oil Ration (
LaTeX Math Inline
bodyR_v
)
: