PVT Correlation (PVTO table)

[kingfisher]

hey all,

I am working on an old oil field for re-developement, so there is a huge lack of data and i we have to do a lot of correlation...

Ive got a question regarding Rs,Bo,Pb,viscosity calculation...

what is given is the Pb of the oil, oil viscosity at reservoir and stack tank oil condition, initial reservoir pressure, Temperature of the Reservoir and Bo at reservoir condition...
Up till now i dont have any information about my gas- nada.

Viscosity@65°C 3,5 - 4 cp
Viscosity@20°C 40 cp
Pb 48,7 bar
Density@20°C 0,65 g/ml
Bo @Res. Condition 1,057
Temp. 65°C
Pi 179 bar

with the given data i need to build my PVTO table (Rs, Pbub, FVF, Visc)
I dont have any idea how to correlate it (how to find out the different values at differen Pbub???)

Any advice or help is welcome !!

thank you in advance

[Shakespear]

I would look at a book like McCain or other PVT book, and use correlations to get what you need. You will need to see under what conditions the correlations work and whether they fit your situation. You will need to adjust the parameters to the correlations to get the "data values" you have. Tune the correlations to your data.

Look at this also

[link Point to another website Only the registered members can access]
and this on PVTO guidelines

[link Point to another website Only the registered members can access]
Look at this to avoid problems

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

[Bang Gaol]

If you want to make it into reservoir and surface condition at initial, it's easy. Just use the correlations inside McCain book titled Hydricarbon Petroleum Fluid. It's very useful. And, I think if you read it, you'll find the answer on your own.

Regards

[kingfisher]

Okay thank you guys, i will look for the book and try to find it out !

[kingfisher]

Okay i was doing some corr. today, but still i have some general understanding problem..

I used to calculate Rs with the standing correlation, using my Pb, my spec. gravities and my temperature respectively. This gives me my Rs at Bubble point, right ? So i know that for all higher pressures it should be the same...
Than I correlated my Bo at Pb also with standing, and i got also this value.

But now my question is, how can i calculate Rs and Bo below my Pb (and my Bo also above Pb) ? Because with the correlations i used, it is just the Pb taken into account and not the pressure...

and another stupid question: what is the difference between GOR and Rs ???

[kingfisher]

[IMG]http://img163.images****.us/img163/3641/blablabs.jpg[/IMG]
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Maybe its better understandable like this...