Need Help: Regoins in PETREL

[petengr]

Hello all,

I have a region in the reservoir has different Pc, Kr than other regoins, so
Can some one, please, help me on how to create a region in PETREL.

Thanks all!

[vinomarky]

SATNUM (look it up) + Property calculator - Easy

[petengr]

hello vinomarky,

thanks for your quick reply. However, I look up for creating regions but couldn't get a clue about that. How to use SATNUM in eclipse, easy yes, but i couldn't understand how to prepare the region in PETREL.

if is it possible, could you write some steps,

thanks very much!

[vinomarky]

Please specify how you'd classify the regions. Property cut offs? If so what equation? Depth cut offs? Area draw? Combination of all three? Any of a thousand other ways? Need more info if you want more help

[petengr]

regions based on different saturation tables.

[vinomarky]

You don't understand the process. The saturation tables do not drive the placement of the regions. The regions are defined by the engineer where he/she thinks different saturation tables need to be applied. Please do us the courtesy of thinking through this a bit and writing more than single sentence requests when you expect detailed replies

[petengr]

The process of geological modelling & simulation is well understood! And "The saturation tables do drive the placement of the regions," When you have layers with different relative permeability curves. Anyway, thanks for your time!

[vinomarky]

Wow, what an epiphany. You've cleared up for me what 20+ years in the industry has failed to do so before. If I just get some saturation tables, then the regions to apply them to are already defined. (removes tongue from cheek). Perhaps (I'm hoping) this is a problem with English not being your first language. If not, well good luck with that. Having a saturation table does NOT drive the placement of the regions. Understanding what that saturation table represents drives the region - that is, you have to be able to represent what combinations of layers, depth, facies, perm, poro cutoffs or more are required to DEFINE where those saturation tables should be applied - per my question above.

Your comment about "When you have layers with different relative permeability curves" is the key one - if I read you correctly, you then wish to simplistically define SATNUM regions for specific layers in the model - this may be the answer to my question above. You can do this in Petrel easily as well as in ECLIPSE at run time with EQUALS keyword in the REGIONS section

Say you have model 100 x 100 x 10, and wanted to define everything SATNUM 1 with exception of layer 6 = SATNUM 2, and layer 8 = SATNUM 3;

In Eclipse it would be:

EQUALS
SATNUM 1 1 100 1 100 1 10 /
SATNUM 2 1 100 1 100 6 6 /
SATNUM 3 1 100 1 100 8 8 /
/

In Petrel, use property calculator and do the following:

SATNUM=if(k=6,2,if(k=8,3,1))

[temr]

Peteng i would agree with Vinomarky that any region firstly defined by engineer only
To define the region you talking about take the property that effects your saturation behavior vs owc high
normally for clastics it is permiability
and for carboniferous it is porosity
analysis you SCAL lab data construct sw vs cap pressure curves and assign your satnums in model using prop calculator
satnum=if(prop=>val and prop<=val1,1,satnum)
etc

[DAH7542]

Dear petengr, take a look of this:

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

[petengr]

Hello,

Thank you gentlemen, thank you for your help!

Best regards!

[winchea]

Hi guys I have a similar issue, I would like to know how to create regions in petrel. I have a reservoir divided into 2 fault blocks and would like to create two separate equilibration regions, that will have different contacts, PVT ect. Kindly help