[OpendTect_Users] OpendTect 2D horizon picking problem

[Juan Diaz-Naveas]

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 escribió:
> 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
>
>
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