420 Posts in 208 Topics by 63 members
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Read SEG2 format data?
You can't read SEG2 format directly in GLOBE Claritas, but we do provide a utility to convert from a series of numbered SEG2 files into a single file - either standard (IBM-32bit) SEGY or GLOBE Claritas (IEEE-32-bit) formats. You can access the utility via an interactive parameter form from the launcher - its under the SEG-Y files tab, and maarged SEG2->SEGY, or you can type seg2segy at the command line in a GLOBE Clariatas terminal window. As long as your SEG2 files are numbered sequential... 8 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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...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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....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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...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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well location
is this possible that we can plot well at migrated section in display regards 7 years ago |
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well location
Masood, Within the TOPLABEL module there is the capability to label comments on the hardcopy plots these can be for instance line intersection points or well ties. See the module documentation particularly for the COMFILE, COMSIZE, COMANGLE and COM_DTOL in the TOPLABEL documentation. Regards Andy 7 years ago |
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well location
Andy Thanks, but hoe we plot in the Xview, is this possible? 7 years ago |
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well location
Masood, To plot in XVIEW you would need to set the well location as a header and either annotate this above the section or Graph the header as an overlay, ie for most CDP's the value of the header would be 0, and at the well location it would be 10 or something. Regards Andy 7 years ago |
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how can we convert segy velocity field to ASCII file?
You can open the segy velocity field in the isovels application then use the [b][i]File[/i][/b] - [i][b]Repick & write current vels to *.nmo[/b][/i] option to save as a *.nmo ASCII file. 7 years ago |
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