[OpendTect_Users] Users Digest, Vol 77, Issue 3

Sat Feb 4 16:29:12 CET 2012

Hello Bert et al,

I'm interested in this topic, please I'd like to follow it, so put my email address gamejihou at hotmail.com in your cc. Thanks. Just an idea about this, even though I didn't get the pdf file Guillaume refers to, the problem could be the navigation, I received before some SEG-Y where the navigation wasn't edited (from a very untidy guy actually) and OD crashed a couple of times because it couldn't, I think, in somehow display the curves the navigation had, and this SEGY hadn't any problems in the trace numbering. Given I've dealt with several untidy guys during the last years :p, so perhaps I can help you a bit if I could take a look at the famous pdf. Oh, btw, OD rocks dude, don't forget it ;)

Cheers,

Gery

> From: users-request at opendtect.org
> Subject: Users Digest, Vol 77, Issue 3
> To: users at opendtect.org
> Date: Sat, 4 Feb 2012 12:00:02 +0100
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> Today's Topics:
> 
>    1. Re: OpendTect 2D horizon picking problem (Bert Bril)
>    2. Re: OpendTect 2D horizon picking problem (Juan Diaz-Naveas)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Fri, 03 Feb 2012 15:35:05 +0100
> From: Bert Bril <bert at opendtect.org>
> Subject: Re: [OpendTect_Users] OpendTect 2D horizon picking problem
> To: users mailing list <users at opendtect.org>
> Message-ID: <4F2BF099.4060909 at opendtect.org>
> Content-Type: text/plain; charset=UTF-8; format=flowed
> 
> Hi,
> 
> 
> Guillaume wrote:
> 
> > I'm working on a research project and i am using OpendTect. I
> > attached this mail a .pdf illustrating my problem with 2D horizon
> > picking. I just try to pick seeds and draw 2D horizon on my seismic
> > line but i can't draw a complete horizon, OpendTect doesn't allow me
> > to continue... I am working on the 4.3 OpendTect version (i first
> > downloaded the 4.2 version but OpendTect 4.2 needed like 5 min to
> > pick 1 seed before to crash).
> 
> Let's first establish the real nature of the problem. I understand that 
> you tried to pick a horizon a couple of times, and that each time you 
> could not go further than a certain point. OpendTect seems to connect 
> the last successful pick with a point on the left side. I presume the 
> straight line is at the depth of your last pick. The point where this 
> happens is always the same. Right?
> 
> My guess is that the problem is caused by a problem in the line data. 
> More specifically, I think it may be a problem with the trace numbering.
> 
> If you imported from SEG-Y, then can you take a look again with the 4.3 
> version. In the examine window you can see direct plots of all the 
> header values for the traces in the file. Good numbering causes there to 
> be just one line with 2 points annotated: the start and stop.
> 
> You can also check in Survey-Manage-2D Geometry. Or just in the 3D 
> viewer, by going over the line with your mouse. Do you see any 
> irregularity in the trace number of coordinate values?
> 
> 
> Please tell me what you get, before we have to go deeper into the 
> details of the data. The data itself can have a problem, or there may be 
> something in there that triggers a bug. In both cases much more 
> information is required to find a solution.
> 
> In all cases, I'm not sure how interesting the rest of the conversation 
> would be for the mailing list. Therefore, communication with 
> support at opendtect.org may be a lot better.
> 
> 
> 
> Bert Bril
> 
> -- 
> -- Bert Bril / OpendTect developer at dGB
> -- mailto:Bert.Bril at opendtect.org , http://opendtect.org
> 
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Fri, 3 Feb 2012 20:30:12 -0300 (CLST)
> From: "Juan Diaz-Naveas" <jdiaz at ucv.cl>
> Subject: Re: [OpendTect_Users] OpendTect 2D horizon picking problem
> To: "Bert Bril" <bert at opendtect.org>
> Cc: users mailing list <users at opendtect.org>
> Message-ID: <3222.201.214.31.10.1328311812.squirrel at webmail.ucv.cl>
> Content-Type: text/plain;charset=utf-8
> 
> Dear Bert,
> 
> In my opinion, the problem that Guillaume has discovered and the issue
> with the trace numbering that you described is extremely interesting for
> me.
> 
> This is the kind of problems that one (I at least) would like to read and
> that often, sooner or later, one is confronted with. A couple of years ago
> I faced a similar problem because the headers were incorrectly filled.
> After correcting the headers all problems disappeared.
> 
> I don't know about the rest of OD users, but this is my way of thinking.
> 
> Very best wishes
> 
> Juan Diaz-Naveas
> 
> 
> Bert Bril escribi?:
> > Hi,
> >
> >
> > Guillaume wrote:
> >
> >> I'm working on a research project and i am using OpendTect. I
> >> attached this mail a .pdf illustrating my problem with 2D horizon
> >> picking. I just try to pick seeds and draw 2D horizon on my seismic
> >> line but i can't draw a complete horizon, OpendTect doesn't allow me
> >> to continue... I am working on the 4.3 OpendTect version (i first
> >> downloaded the 4.2 version but OpendTect 4.2 needed like 5 min to
> >> pick 1 seed before to crash).
> >
> > Let's first establish the real nature of the problem. I understand that
> > you tried to pick a horizon a couple of times, and that each time you
> > could not go further than a certain point. OpendTect seems to connect
> > the last successful pick with a point on the left side. I presume the
> > straight line is at the depth of your last pick. The point where this
> > happens is always the same. Right?
> >
> > My guess is that the problem is caused by a problem in the line data.
> > More specifically, I think it may be a problem with the trace numbering.
> >
> > If you imported from SEG-Y, then can you take a look again with the 4.3
> > version. In the examine window you can see direct plots of all the
> > header values for the traces in the file. Good numbering causes there to
> > be just one line with 2 points annotated: the start and stop.
> >
> > You can also check in Survey-Manage-2D Geometry. Or just in the 3D
> > viewer, by going over the line with your mouse. Do you see any
> > irregularity in the trace number of coordinate values?
> >
> >
> > Please tell me what you get, before we have to go deeper into the
> > details of the data. The data itself can have a problem, or there may be
> > something in there that triggers a bug. In both cases much more
> > information is required to find a solution.
> >
> > In all cases, I'm not sure how interesting the rest of the conversation
> > would be for the mailing list. Therefore, communication with
> > support at opendtect.org may be a lot better.
> >
> >
> >
> > Bert Bril
> >
> > --
> > -- Bert Bril / OpendTect developer at dGB
> > -- mailto:Bert.Bril at opendtect.org , http://opendtect.org
> >
> >
> > _______________________________________________
> > Users mailing list
> > Users at opendtect.org
> > http://lists.opendtect.org/mailman/listinfo/users
> >
> 
> 
> 
> 
> 
> 
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> 
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> End of Users Digest, Vol 77, Issue 3
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