[Opm] CPR and Find Facility

Sun Aug 30 20:34:28 UTC 2020

Hi Alf,
Thank you for your response.
Your suggested command for running CPR from the command-line (flow VOLVE_2020ZZ_OPM.DATA --use-cpr=1) works fine for me.
Regarding the find facility, there does not seem to be an option to search for free text (say "cpr") within the document. Am I missing something?
Regards,
Dave

From: Alf Birger Rustad <abir at equinor.com>
Sent: 30 August 2020 21:06
To: Wilkinson, David <david.wilkinson at abdn.ac.uk>; opm at opm-project.org
Subject: Sv: OPM Query - From a New User

Hi David,

It looks like you are using the tuning parameters I put in Pull Request 2669 in opm-simulators. If you compile Flow from git and include that PR, those will be your new defaults. I am surprised if those values are good for the Volve case though. You can add the line:
use-cpr=True
to the file if you want to test with CPR too. Please note that CPR got a complete make over recently. Not sure it made it into the latest release, so you may need to use Flow compiled from source later. In any case, if you only want to test CPR from the command-line, just run:

flow  VOLVE_2020ZZ_OPM.DATA --use-cpr=1
(I missed the =1 part in my previous mail, sorry).

Regarding the a find facility, there are multiple ways you can search for a keyword. The manual is a pdf, and each keyword has a page with its name in the title. Hence, if you search in the "Contents" you will effectively search the keywords. You will need a pdf-viewer with a seperate search field for the "Contents" such as Okular. Please also note that all keywords are in alphabetical order, and on any page with keyword documentation, you will find a clickable alphabet at the bottom of the page. The idea is that any keyword should only be two clicks away. You can of course also do a free text search within the document itself if you want to search for a topic. Does this answer your need?

Cheers,
Alf

________________________________
Fra: Wilkinson, David <david.wilkinson at abdn.ac.uk<mailto:david.wilkinson at abdn.ac.uk>>
Sendt: søndag 30. august 2020 15:01
Til: Alf Birger Rustad <abir at equinor.com<mailto:abir at equinor.com>>; opm at opm-project.org<mailto:opm at opm-project.org> <opm at opm-project.org<mailto:opm at opm-project.org>>
Emne: FW: OPM Query - From a New User

Hi Alf,

Thank you for your email.

My simulation is run using the following command:

flow --parameter-file=VOLVE_2020ZZ_OPM.PARAM

where VOLVE_2020ZZ_OPM.PARAM is as per the attached file.

Would your command "$ flow DECK.DATA --use-cpr" (modified as required) be put in the .PARAM file?

Similar question regarding "$ flow -h"?

Regarding your "See all parameters with....",  a "find" facility (when searching for keywords etc.) does not seem to be available for the OPM manual (link below).  This makes getting best value from this large manual extremely difficult!  Am I missing something here and is there a solution?

Grateful for advice on any of the above.

Thanks for the tip regarding MINPV....
Kind regards,

Dave

From: Alf Birger Rustad <abir at equinor.com<mailto:abir at equinor.com>>
Sent: 29 August 2020 15:25
To: Wilkinson, David <david.wilkinson at abdn.ac.uk<mailto:david.wilkinson at abdn.ac.uk>>; opm at opm-project.org<mailto:opm at opm-project.org>
Subject: Re: OPM Query - From a New User

Hi David,

Only phone available now, so short answer. CPR keyword is ignored because the implementation in Flow is immature. Use it like this:

$ flow DECK.DATA --use-cpr

You can also force usage of TUNING with command line parameter. See all parameters with:

$ flow -h

Flow supports MINPV and PINCH, which is the commonly used in Eclipse.

Cheers,

Alf

________________________________

Fra: Opm <opm-bounces at opm-project.org<mailto:opm-bounces at opm-project.org>> på vegne av Wilkinson, David <david.wilkinson at abdn.ac.uk<mailto:david.wilkinson at abdn.ac.uk>>
Sendt: lørdag 29. august 2020 15:23
Til: opm at opm-project.org<mailto:opm at opm-project.org> <opm at opm-project.org<mailto:opm at opm-project.org>>
Emne: [Opm] OPM Query - From a New User

Dear Member,

I am just starting to learn the ropes with OPM and have tried out some datasets which run fine on Eclipse.
I have a few issues to try to overcome:

>From the OPM Manual  https://opm-project.org/wp-content/uploads/2020/08/OPM_Flow_Documentation_2020-04_Rev-1.pdf
TUNING keyword (page 1479)
"TUNING defines the parameters used for controlling the commercial simulator's numerical convergence parameters for the global grid.  The keyword is mostly ignored by OPM Flow; however, the simulator can be instructed to read the first record of the TUNING keyword if the appropriate command line parameter has been activated (see section 2.2 Running OPM Flow 2020-04 From The Command Line)."

  *   I tried inserting TUNING into the SCHEDULE section of a dataset, it indeed had no effect.
  *   I cannot find an "appropriate command line parameter" in Section 2.2 Running OPM Flow 2020-04 From The Command Line.
Also a "find" facility (when searching for keywords etc.) does not seem to be available for the manual.

I would like to get OPM to use CPR as the linear solver's pre-conditioner (Eclipse has a keyword CPR, which is apparently not supported by OPM).
The necessary command is detailed as --use-cpr in the OPM manual (page 56).  I'm not sure how to apply this.  Grateful if anyone could advise.

OPM does not seem to have a MINPORV option?  Does anyone know if there is a workaround for this?
I should be very grateful if you could point me in the best direction to be able to overcome any of the above issues.

Kind regards,
David Wilkinson
University of Aberdeen

The University of Aberdeen is a charity registered in Scotland, No SC013683.
Tha Oilthigh Obar Dheathain na charthannas clàraichte ann an Alba, Àir. SC013683.