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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

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.

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

Why not get the Gulfacks training set from the schlumberger portal (SIS) or some seismic cubes from the OpenDtect website???

Many thanks for sharing your experience with 32 bit data on petrel. There is some agreement on the usefulness of these data volumes for seismic characterisation. I too, firmly believe in loading the entire amplitude range without clipping into the interpretation software. I would to know of your experience in detailed tying of well logs and interpreting lithology for depth cross sections, for example in Stratworks / Landmark?

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!