[OpendTect_Users] Well logs and neural networks.

[Christopher P. Ross]

Hi Alex,

As Andres has said, the way to do this is with multiple wells.  I am not 
sure if OpendTect will do this, but I do this all the time with other 
software when I am missing key logs or log intervals and I have 
sufficient wells with sufficient logs acquired.

Chris

On 7/27/2011 9:42 AM, Gordon, Andres Cesar wrote:
> Hi Alex, I did in the past and work very fine for me but you need several wells in the area and several logs.
> You need to have a neural network software and you need to train the network using several logs in wells that you have sonic (for example, SP, GR, DENSITY, NPHI, PEF, SONIC, RESISTIVITIES) and all the existing logs that are present in all the wells. After training the network, you can apply the found relationship to the unknown well. If you have many wells to train and several logs in those wells this methodology works fine
> Regards
> Andres
>
>
> -----Original Message-----
> From: users-bounces at opendtect.org [mailto:users-bounces at opendtect.org] On Behalf Of Alex Antunes
> Sent: quarta-feira, 27 de julho de 2011 11:14
> To: users at opendtect.org
> Subject: [OpendTect_Users] Well logs and neural networks.
>
> Hello everybody,
>
> I'm needing to compute a sonic log in a well that doesn't have it, but I don't want to use the Gardner's approximation.
>
> I think that this is possible to perform by using the neural networks in OpendTect, using a sonic log plus a set of other logs from a reference well, but I didn't find any tip on it in the OD documentation.
>
> Does anyone know how to do it?
>
> Regards,
>
> Alex Antunes.
>
> Prof. Alex Francisco Antunes
> Geologia Estrutural e Interpretação Sísmica Laboratório de Geologia e Geofísica de Petróleo Depto. Geologia - Prog. Pós-Grad. Geodinâmica e Geofísica / UFRN
>
>
>
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-- 

Cross QI Cross QI Cross QI Christopher P. Ross
830.896.7656

/"Survivors seem to function best, when peril is at hand." (J. Buffett, 
2004) /

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