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optical stacking 
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Joined: Wed Jul 24, 2013 8:11 am
Posts: 23
Post optical stacking
what is an optical stacking? How do I use it in seismic data?

Fri May 30, 2014 8:21 am

Joined: Sat Feb 15, 2014 7:33 am
Posts: 31
Post Re: optical stacking
Well, according to the Blueback guys (who make plugins for Petrel) its this :

Seismic stacking. This is a technique similar to where you stack multiple inlines/xlines to remove noise and enhance fluid effects and laterally non dipping reflectors. This tool is also referred by some as Optical stacking

http://www.blueback-reservoir.com/softw ... lbox?id=29

So - when you have low quality data or a weak signal, you can stack multiple inlines (or crosslines) together to see the data more clearly. It will only work with things that are flat(ish) - hence its a way to highlight a weak "flatspot" caused by a fluid contact.

Fri May 30, 2014 7:54 pm

Joined: Wed Jul 24, 2013 8:11 am
Posts: 23
Post Re: optical stacking
Thank you very much for the reply. A little more querry regarding optical stacking,
this can only be used if your reflector is flat, horizontal. stacking means addition of amplitude values from 10 inlines (x-lines) together to get a single cross-lines.
Please let me know where do I get all this information..

Sat May 31, 2014 5:59 am

Joined: Sat Feb 15, 2014 7:33 am
Posts: 31
Post Re: optical stacking
In seismic processing, "stacking" just means the summation of one or more seismic trace.

When the traces are summed, if there are events with the same amplitude at the same two way time value, then the amplitudes will combine together, and get stronger.

Events that are on one trace at a particular time, and not on another trace at the same time, will not get stronger.

You can use this as a method to detect weak, flat events that are swamped by other reflection signals and/or noise; this might be the "flat spot" cause by an oil-water contact, for example.

Exactly how this is implemented in the software you are using will vary - you'd need to check in the software manual or with the support desk to find out exactly what method(s) are available and how to employ them.

Sat May 31, 2014 8:34 am
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