[Opm] FW: [Help] Convergence issues - FLOW

[Alf Birger Rustad]

Thanks for testing Rohith, we will need to find time to go through your cases.

Cheers,
Alf

________________________________
From: Opm [opm-bounces at opm-project.org] on behalf of Nair, R. (Rohith) [rohith.nair at tno.nl]
Sent: Tuesday, June 21, 2016 1:18 PM
To: Alf Birger Rustad; opm at opm-project.org
Subject: Re: [Opm] FW: [Help] Convergence issues - FLOW

Hi Alf,

The switch linear_solver_ignoreconvergencefailure=true doesn’t seem to help in this case.

Additionally, a deck file (https://gist.github.com/nairr/8dbe35141a7b93dda90a1babd462b843 ) which used to run with FLOW_2016.04_stablerelease, gives the following error with FLOW_2016.04_current:  Floating point exception (core dumped). I think the same issue has been referenced in opm-simulators #731.

Cheers,
Rohith

From: Alf Birger Rustad [mailto:abir at statoil.com]
Sent: woensdag 15 juni 2016 16:28
To: Nair, R. (Rohith); opm at opm-project.org
Subject: RE: [Opm] FW: [Help] Convergence issues - FLOW

Hi Rohith,

One thing you can try right away is the new switch for ignoring convergence failure for the linear solver. On the command line or in a parameter file you can add:
linear_solver_ignoreconvergencefailure=true

Cheers,
Alf
________________________________
From: Opm [opm-bounces at opm-project.org] on behalf of Nair, R. (Rohith) [rohith.nair at tno.nl]
Sent: Wednesday, June 15, 2016 3:39 PM
To: opm at opm-project.org<mailto:opm at opm-project.org>
Subject: [Opm] FW: [Help] Convergence issues - FLOW
Dear OPM community,

At the recently held OPM meeting I had mentioned that we at TNO are facing convergence issues with FLOW when using perturbed schedule files and also with handling well openings (Note: ECLIPSE is able to deal with these perturbed schedule files). I believe it was mentioned that you guys were already working towards a fix for these sort of issues. We would appreciate your help/suggestions/workarounds in solving these convergence issues and ultimately improving the robustness of the FLOW simulator in the process.

Please find the relevant data available for download from the following link: https://we.tl/OBTYWPLnwg

The download contains:


1.       Failed simulation with FLOW for simple water injection rate optimization (successful simulation is also included): The only difference between the successful and failed simulation is different water injection rates

2.       Failed simulation where wells are opened at predefined intervals

3.       Benchmark plots which successfully compare FLOW with other simulators(E100, MRST, Mores, AD-GPRS) for oil-water flow simulation

Thanks and Kind regards,
Rohith Nair

This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. TNO accepts no liability for the content of this e-mail, for the manner in which you use it and for damage of any kind resulting from the risks inherent to the electronic transmission of messages.



-------------------------------------------------------------------
The information contained in this message may be CONFIDENTIAL and is
intended for the addressee only. Any unauthorised use, dissemination of the
information or copying of this message is prohibited. If you are not the
addressee, please notify the sender immediately by return e-mail and delete
this message.
Thank you
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <//opm-project.org/pipermail/opm/attachments/20160621/baf4219c/attachment.html>