420 Posts in 208 Topics by 63 members
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(*.SU) format file
Hi, I have already try to read files from seismic unix (*.su), but without success. Is it possible to import them in this format or it is compulsory to convert them firt ? 4 years ago |
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(*.SU) format file
The output from seismic unix is SEGY-like but doesn't include the standard EBCDIC header. Hence, unfortunately, this is not recognised as a SEGY file and GLOBE Claritas can not read them. You will need to convert the seismic unix files to standard SEGY before reading them in GLOBE Claritas with the READSEGY module. 4 years ago |
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... change the colour scheme
The colours used in GLOBE Clatritas can be found in the palette -> 'Colours' button on the 'Flows tab of the launcher. The first line of the palette (colours 1-16) is used for special purposes 1 Black 2 White [i][color=blue]Normally these first 7 colours are left unchanged,[/color][/I] 3 Red [i][color=blue]but you may wish to change them to compensate for[/color][/I] 4 Purple [i][color=blue]differences between screen displays (for example, to[/color][/I] 5 Blue... 2 years ago |
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... compare data
SeisCat is a data management tool within GLOBE Claritas that automatically locates seismic files in your projects – in SEGY, SEGD, GLOBE Claritas SEGY or HDF5 format, and allows you to sort, display and interact with them. SeisCat can be accessed via the 'Seismic Data' tab of the launcher, projects are on the left hand side and the data files on the right of the SeisCat window. If this is the first time SeisCat has been open the display can be populated by selecting the orange magnifying glass... 2 years ago |
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... create a presentation from GLOBE Claritas plots
If you need to share the results of tests or create a report, it can be time consuming to make screen captures of every panel and analysis window. The 'Utils' - 'Produce a PowerPoint presentation' toolbar option, at the top of GLOBE Claritas display windows, speeds this process up by capturing all of the panels (and any analysis windows) directly into a “PPTX” format presentation that can be opened with Microsoft PowerPoint or the LibreOffice Impress presentation packages. 2 years ago |
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....overlay a velocity field on my seismic stack data.
The Claritas XVIEW module allows the user to display both the seismic trace vector and a pseudotrace as different panels. As the NMOTRACE module allows you to save a velocity field as a pseudotrace header we can under the utilities menu of an open XVIEW window select display "Plot Header Pseudotraces". This would then display the PSEUDOTRACE generated by the NMOTRACE module (default=VELTRACE) as a seperate panel. The user can then toggle between the trace vector and the pseudotrace. However it i... 7 years ago |
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...apply a tail-mute from a trace header value?
There are several ways to do this - and if you know python its easy to use the RUNPYTHON module, but another approach uses PSEUDOMATH. The PSEUDOMATH module is a replacement for STORE1/STORE2/MERGE. It can be used to create or manipulate pseudotraces. A pseudotrace has the same dimensions as a trace (number of samples etc.) but is stored as a trace header (and written into the .dth file). In this example : - SYNWAVE creates some synthetic traces - SMUTE loads a tail mute (also called an in... 8 years ago |
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...convert between time and depth domains?
The TDCONV1 module can be used to convert seismic or velocity data from a time to a depth domain or vice versa. To begin use the DISCREAD module to read in the seismic or velocity data followed by the TDCONV1 module. To run this latter module - [list] [li]the SDEFILE parameter contains the *.nmo file. This should be a smoothed version of the file used to stack the data.[/li] [li]MODE this can be Vint, Vav or Vrms, for velocity files that are already depth converted the options are Vint(z) or Va... 7 years ago |
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...create a segy velocity field.
Generation of SegY velocity fields in Claritas is performed using the Claritas NMOTRACE module which allows the user to swap the existing trace vector and replace with the interpolated velocity field. A typical processing flow would read in a suitable stacked dataset using the DISCREAD module, NMOTRACE to swap the velocity field into the trace vector and the WRITESEGY to write the SegY velocity field out to disc. 7 years ago |
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...export seismic data
Hello there, I was trying to find a way to export my seismic line (.segy or even better .dsc) into a simple triplet xyz (offset, time, amplitude) that can be easily manipulated with, for example, Python or GMT. I came across a question on this forum where a user shared a python code to plot some seismic data with matplotlib. However, the link is a bit old and does not work anymore. Any suggestion? Or anywhere I can find a sort of repository of Python codes to be run through Claritas? 3 years ago |
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