Need Help Choosing EOS Module

Hi everybody, 

I'm pretty new to TOUGH2 MP. I'm hoping somebody can help me, which EOS module should I use?

To modeling natural gas production and reservoir compaction I use FLAC3D with a 3D hydro-mechanical model, because FLAC3D is not so good at calculation for gas flow, so I think, I should try TOUGH-FLAC. After reading the user's guide, I still don't know, which EOS module should I use? In the gas reservoir, there is more than 80% CH4, 10% N2, and a little CO2, but I think, it can be simplified to just CH4 and all this are gas phase.

Thank you,


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  • Hi Gang,

    you can take a look at EOS7C for this type of problem. See here.


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  • JuDi 

    Hi Julia,

    Thanks for your help. I've only seen the TOUGH2 MP package before.

    Is that right, the EOS7C module can also be used in TOUGH2 MP?


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  • Gang,

    I am not sure about this, since it is not listed under that package. I'd suggest to contact the developer team.


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