Gas Material Balance

[zaheer.jamali]

my doing p/z on gas condensate reservoir
Well has produce about 1 bcf with cgr of 102 stb/mmscf
should it convert oil production into gas equivalent and add it to produce gas
then plot P/z with GP

simple i want to ask

should i do
P/z vs GP
or
P/z vs (Gp+Ge)

[anihita]

See this paper by Havlena and Odeh, this will clear all the doubts and clear the basics:

[link Point to another website Only the registered members can access]

[zaheer.jamali]

this capter is not related with my question
please guide me properly

[06pg22]

Zaheer,

You are right, Gp will be including gas + gas eq. and similarly z-factor in p/z values.

[zaheer.jamali]

but i need reference

[06pg22]

but i need reference

See Applied Petroleum Reservoir Engineering's Chapter on Gas Condensate Reservoirs

[zaheer.jamali]

i have read that book
it writen by bc craft and mf hawkins

[06pg22]

so you got the answer?

[zaheer.jamali]

no i need othere reference

[06pg22]

this thing is also clearly mentioned in RESERVOIR ENGG HANDBOOK, by Tarek, in Reservoir Fluids chap that in gas condensates two-phase z-factor is utilized for p/z analysis.

[ivan_aljeburi]

If the amount of condensate in large then you must use Gp+Ge...otherwise it will not have a big effect on a OGIP. It s better to do that calculation before dew point, for more accurate results.