Porosity-Permeability

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Hi friends
Can anyone help?

Regards

[vinomarky]

What exactly about their relationships are you interested in? Down to the microscopic numerical model type work & relationships, or more like FZI (Flow Zone Indicator) type relationships?

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I have some information from core analysis

[06pg22]

Such correlation are explained in SPE Petroleum Engineering Handbook, Volume 1, Edition 2.

[ahmedm]

Just plot porosity in x-axis and log permeability in y-axis
Off course liquid permeability after correction to overburden and klinkinberg
Then try to see the trend you have is it one rock type or more compare it to pc vs sw of all cores if you see different trends you might see the same in you proper relation ship also you might introduce the effect of shale by plotting the fitting curves at high perm as the 0 vcl and at Lowe perm as vcl cutoff


Then you will have your perm as function of porosity and vcl then take it to your geological model


I hope it is giving some idea

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thank you ahmedm,
i want to find a good curve between Sw and Pc,
i have some information to calculate Pc.
dose anyone have experience in this topic?
please help.
Regards

[vinomarky]

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[vinomarky]

Just looking at your XL sheet - I don't believe your petrophysical logs. Have they tied this to core? What about perm?

You have many instances of porosity less than 5%, and Sw < 20%...... That simply does not normally happen..... In fact you have a couple instances of porosity less than 2% and Sw less than 10%!!!!......

No point in fitting functions to this data, bullsh!t in = bullsh!t out

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thanks for reply.

"I don't believe your petrophysical logs" why?

"Have they tied this to core?" no core just log data for a transition zone

"You have many instances of porosity less than 5%, and Sw < 20%...... That simply does not normally happen" why?

[vinomarky]

Answer to the first and third question are the same - it just doesn't happen in 'normal' reservoirs. At 5% porosity, even with perfectly clean sand you would have to be at something in single digits or less in terms of permeability. At these perms (ie pore throat size) your capillary bound irreducible water saturation would certainly be greater than 20%.... I would hazard a guess it would be greater than 40% even.

Your answer to the second question does not surprise me. Unless this was tied to core I simply would not believe it

By way of comparison, I've seen MANY reservoirs with porosity >20% and Sw > 20%, but none where porosity < 10% and Sw < 20%

[ahmedm]

what is the API of your oil ?

your oil density is very low ..... i wonder what is the API here
furthermore, what the Rs in your reservoir ?
i think it is already saturated ..... interesting !!!