Can I estimate initial condensate rate if I know gas composition?

[catapam]

I have a gas condensate field with following composition:
How can I estimate condensate rate (bbl condensate / milion gas cubic meters)?

No Components Yi
1 CO2 0.019679
2 N2 0.008827
3 C1 0.75981
4 C2 0.096321
5 C3 0.050592
6 I-C4 0.00899
7 N-C4 0.013479
8 I-C5 0.007099
9 N-C5 0.004249
10 C6 0.003772
11 C7-C9 0.012616
12 C10-C13 0.006503
13 C14-C19 0.004592
14 C20-C29 0.00264
15 C30+ 0.000829
Sum 0.999998

[ivan_aljeburi]

You need lab. separator test...

[catapam]

As far as I know C3,C4 components are for LPG and C5+ for condensate.
If you have concentration of each component as I provided should be some analytical / empirical formulas that could relate those concentrations with condensate and LPG rate.

[dimas_brata]

What kind of physical system condition (P,T) for your raw material...maybe u can simulate it with hysys for steady state...CMIIW

[mobek]

You need the overall mass or volumetric flowrate with T&P in order to be able to calc. whatever!

[catapam]

Simulations means a static model.
Eclipse PVTI could be helpful?
(no experience with this tool)

If an equation of state is build in PVTI could be simulated on a simple sector model with E300?
Could you this way obtain some estimated CGR vs pressure?

[vinomarky]

You should be able to get a reasonable approximation by assuming all your C6+ drops out as condensate. Just calc the liquid volume equating to this fraction, along with the gas shrinkage due to condensate drop out

[TOLGAUS]

use a flash calculation e.g. HYSYS with peng and robinson. Flash at standard conditions like 15 C & 0 barg. Find out the ratio. To be more precise, you can assume a separator pressure & temperature wrt what kind of field/operation/stage you will run.

[Land_Mark]

catapam,

I'm inexperienced, bu I have just one suggestion: check out Petroleum Experts' IPM software, namely PVTp and Prosper. Go through the "EOS calibration of a condensate sample using PVTp" tutorial in PVTp and find out the data you need to do a full fluid characterization that would allow you to generate a phase envelope (P-T diagram - allows you to derive CGR vs pressure). When you get the list, you can make recommendations to your boss to acquire the required data. When you get the data, go through the PVTp program and get your EOS fluid model. Go to Prosper and build your completion model and import the EOS fluid model into Prosper. Set up your sensitivity variables (CGR, WGR, FTHP) and run your lift curve calculations and then plot your well performance curve (IPR vs VLP), then read off the oil (condensate) rate at the intersection. Tell me if I'm wrong, I'm not sure.

Markus L.