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- Look for information about the shot point byte position in the EBCIDIC header.
Select the Trace header tab to view the SEG-Y file's headers trace by trace. The byte positions' values are continuously reported as you move through the file. By closely observing how the values change you should be able to determine the correct byte position.
Note Shot points often appear in pairs, i.e. they change every other trace.
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| Tip |
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Before importing multiple SEG-Y files, try importing a single files making sure that your settings are correct. Make a note of your settings. |
Import 3D seismic
Make sure you have read about the different elements of the import menu above, before you read this section.
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Loading 3D seismic can be a time consuming job, and it is very important that the import settings are correct before starting (to avoid having to do the job again). Therefore, 3D import is usually performed by first setting the import settings, and then performing a scan on the very first inlines only. This is achieved by leaving the Min/Value Inline setting at From file, but setting the Max setting to 10 lines higher than the first inline. This means you have to know the start value of the Inline. You should be able to find this in the Trace header or the EBCIDIC header.
Inline and Crossline byte position
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