[Opm] Question About Pressure-Dependent Permeability

[Alf Birger Rustad]

Hi again,

I am afraid I did not do proper checking before answering you. We do indeed support pressure dependent transmissibility. You will find one example case (which is under continuous testing) here:
https://github.com/OPM/opm-tests/blob/master/spe1/SPE1CASE2_ROCK2DTR.DATA
As you can see the keywords ROCK2D, ROCK2DTR, ROCKWNOD and OVERBURD are all supported. ROCK2DTR provides transmissibility multipliers.

We do also have a test case with ROCKTAB, but it is currently not under testing, so the state of that support is not clear. Please check out the test here:
https://github.com/OPM/opm-tests/blob/master/model6/0B_ROCKTAB_MODEL6.DATA
It would be good if you can use that case to test support for ROCKTAB, and report back. If it works correctly, we should get the model under continuous testing.

However, we do not support the ROCKOPTS keyword yet, as discussed here:
https://github.com/OPM/opm-simulators/issues/3501

Cheers,
Alf

________________________________
Fra: Opm <opm-bounces at opm-project.org> på vegne av Alf Birger Rustad <abir at equinor.com>
Sendt: søndag 5. september 2021 23:06
Til: Stian Mydland <stian.mydland at ntnu.no>; opm at opm-project.org <opm at opm-project.org>
Emne: Re: [Opm] Question About Pressure-Dependent Permeability

Hi Stian,

Seems this one got a bit lost in vacation, so sorry for late answer. There are to my knowledge no current plans to implement pressure dependent transmissibility or permeability.

We follow a patches are welcome policy, so contributions are welcome.

Cheers,
Alf

-----Original Message-----
From: Opm <opm-bounces at opm-project.org> On Behalf Of Stian Mydland
Sent: mandag 2. august 2021 09:03
To: opm at opm-project.org
Subject: [Opm] Question About Pressure-Dependent Permeability

Hi, OPM-Project Team!

I'm using OPM Flow in my research on production from tight unconventionals, and I haven't found a good way of handling changes in fracture permeability with pressure. I am wondering whether you have planned to implement pressure dependency on the transmissibility via the ROCKTAB keyword in a future release?

If not, is this something that could be added as a contribution from somebody outside the OPM team?


Med Vennlig Hilsen / Kind Regards
Stian Mydland

PhD Candidate
Department of Geoscience and Petroleum
Faculty of Engineering
Norwegian University of Science and Technology, NTNU
NO-7491 Trondheim, Norway
+47 452 92 157 | stian.mydland at ntnu.no<mailto:stian.mydland at ntnu.no>
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