[OpendTect_Users] Time-to-depth 2D horizons conversion with well sonic information

[Gery .]

Dear all,

I've read this post several times (http://lists.opendtect.org/pipermail/users/2011-July/000511.html) and played around with OD to do what I need but didn't find the way to do it. So please I would appreciate if someone has an easy way to do this with OD v4.3 or the current OD version.

This is the problem: I have a 2D seismic line in TWT and well sonic information in us/ft. After drawing some 2D horizons, I want to convert them to depth in meters. If I were use the procedure explained in the post mentioned above, I would need to provide manually the velocity for every horizon. This probably would not be a pain because I have only 8 horizons. However, I would need first to pick manually the sonic velocity for every horizon depth (probably using the 2D log viewer or some awk/grep/tail/etc trick in the LAS file) and then convert it to m/s (using this website http://home.online.no/~helgnil/calc1_4e.html or using just the conversion factor in shell/excel/etc).

So, I was wondering if it is possible to automagically assign to the desired horizon the corresponding well sonic velocity (in m/s) and then make the time-to-depth conversion, would it be possible?

I would appreciate some ideas, I mean, to avoid doing this manually, thank you.

Best regards,

Gery


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