[OpendTect_Users] Synthetic seismogram generation in OpendTect

[Arnaud Huck]

Dear Mike, OpendTect users,

Allow me to answer to your last question: Yes and No

No, you do not need any license to do the following operations in OpendTect:

Yes, you can (for free):
1- Import you checkshot, well deviation, time-depth model, markers, logs 
from ascii text files.
2- Import a VSP SEG-Y as either a 2D line, 3D volume or a well log.
3- Edit, despike your logs in the well manager log tools (frequency 
filtering will be present in the next development release)
4- Compute a log from one or several others with the Rock Physics 
library (Gardner equation, Castagna, Elastic Impedance, ...)
5- Generate a synthetic Ricker wavelet, extract a statistical wavelet 
from a line/volume
6- Create a synthetic seismogram for a well (use the real well deviation)
7- Apply a bulk shift, stretch or squeeze to your time depth model 
depending on what you want to do.
8- Estimate the cross-correlation between the synthetic seismogram and a 
composite seismic trace extracted along the (deviated) well path.
9- Save the impedance, reflectivity and synthetic as either volumes 
and/or logs.
10- Estimate a deterministic wavelet per well, with interactive tapering 
and phase rotation post-processing.
11- Interactively merge (stack+alignment) several wavelets to generate a 
composite wavelet.

Please find below the link to a webinar we dedicated on this topic:
http://opendtect.org/tutorials/Webinar_Synthethic_to_Seismic_Matching

Best regards,
Arnaud Huck.

Arnaud Huck, MSc.
Senior Geoscientist
dGB Earth Sciences
Nijverheidstraat 11-2, 7511 JM Enschede, The Netherlands
arnaud.huck at dgbes.com
Tel: +31 53 4315155 , Fax: +31 53 4315104
http://www.dgbes.com

Le 04/02/2013 19:18, Mike Stone a écrit :
> So I would spoof the headers and load it into the 3D.
>
> Figure out what Inline/Xline your well is at. Then use the 
> SEGY Manipulator button in the loader to set it to that location.
> I usually load it twice, one with a fixed Inline and incrementing 
> xline. then vise-versa.
>
> Opendtect doesn't have the best wiggle over color displays, but you 
> can do it with the 2D viewer, So give that a shot.
>
>
>
> Just brainstorming here, But in SMT you can also bring it in as a 
> synthetic. But to be honest I've never done a Synthetic in ODT. How do 
> you do one? Is it a plug-in? Also can you use imported synthetics?
>
> Mike Stone
> 832-768-0884
> MStone at ACT3Solutions.com