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2ms vs 4ms and 16bit vs 32 bit seismic for interpretation : Geophysics (Seismics) - Exploration & Production Geology

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Post new topic Reply to topic  [ 6 posts ] 
2ms vs 4ms and 16bit vs 32 bit seismic for interpretation 
Author Message

Joined: Fri Apr 29, 2011 2:55 am
Posts: 2
Post 2ms vs 4ms and 16bit vs 32 bit seismic for interpretation
Are there any advantages in:

a) loading a 32bit seismic data volume vs a 16 or 8 bit volume for interpretation in paradigm, petrel, etc....

b) Using seismic data sampled at 2ms vs 4ms..

I would imagine that the resolution in both cases would be better, useful especially for seismic attribute maps and for detailed well ties with lithology in depth cross sections.

As the larger seismic volumes would require greater computer resources, I would appreciate a clarification or exchange from similar experiences


Tue Jul 05, 2011 6:13 am

Joined: Wed Sep 01, 2010 10:06 pm
Posts: 107
Post Re: 2ms vs 4ms and 16bit vs 32 bit seismic for interpretati
Well, for petrel it has certain advantages for attribute calculations and getting more detail to image small channels and subtle rock property changes. My experience is that when realized to the zgy bricked format not a lot of visualisation performance reduction is the result.

For frequency filtering I believe small vertical sampling and a good amplitude bit range is paramount. Of course this also goes for other attributes and filters and for my alltime favorite: sweetness.

In some cases I've also seen 32 bit data is not properly realized and high amplitudes are just basically cut-off; in which case very valuable data is lost.


Tue Jul 05, 2011 10:11 pm

Joined: Sat Jun 25, 2011 12:22 pm
Posts: 7
Post Re: 2ms vs 4ms and 16bit vs 32 bit seismic for interpretati
I need Data for Petrel 2009 If any one have available geophysical data
can give me to this e-mail geo-aaar@hotmail.com
i am still begginer in petrel a i want to get my first step
thanks for your interest


Thu Jul 07, 2011 12:06 am

Joined: Wed Sep 01, 2010 10:06 pm
Posts: 107
Post Re: 2ms vs 4ms and 16bit vs 32 bit seismic for interpretati
Why not get the Gulfacks training set from the schlumberger portal (SIS) or some seismic cubes from the OpenDtect website???


Thu Jul 07, 2011 10:12 pm

Joined: Fri Apr 29, 2011 2:55 am
Posts: 2
Post Re: 2ms vs 4ms and 16bit vs 32 bit seismic for interpretati


Mon Jul 11, 2011 6:26 am

Joined: Wed Sep 01, 2010 10:06 pm
Posts: 107
Post Re: 2ms vs 4ms and 16bit vs 32 bit seismic for interpretati
Sorry, can't help you there. Neve used stratworks or the landmark suite. Know how to do it in Petrel though, through the synthetics... The actual well tie workflow is a little too complex to what I usually need to do!


Mon Jul 11, 2011 6:00 pm
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