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

2016-06-21 Thread Alf Birger Rustad
Thanks for testing Rohith, we will need to find time to go through your cases.

Cheers,
Alf


From: Opm [opm-boun...@opm-project.org] on behalf of Nair, R. (Rohith) 
[rohith.n...@tno.nl]
Sent: Tuesday, June 21, 2016 1:18 PM
To: Alf Birger Rustad; opm@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:a...@statoil.com]
Sent: woensdag 15 juni 2016 16:28
To: Nair, R. (Rohith); opm@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-boun...@opm-project.org] on behalf of Nair, R. (Rohith) 
[rohith.n...@tno.nl]
Sent: Wednesday, June 15, 2016 3:39 PM
To: opm@opm-project.org<mailto:opm@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

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

2016-06-15 Thread Alf Birger Rustad
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-boun...@opm-project.org] on behalf of Nair, R. (Rohith) 
[rohith.n...@tno.nl]
Sent: Wednesday, June 15, 2016 3:39 PM
To: opm@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
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