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| IntroductionDepth conversion of time data into depth data can also be performed for 2D seismic lines. It utilizes in principle the same basic techniques as described in Depth Conversion of time surfaces. In addition extra attention is paid to transforming the wavelets into a new wavelets form using spline based algorithms. |
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Formula for depth conversion
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| Depth converted seismic lines |
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| Depth converted seismic lines |
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- Seismic lines that have an outline within the velocity field are depth converted and saved back into the project.
- The default option is to create a new folder bearing the same name with the extension _depth.
- If saved back into the same data the converted depth seismic will override the time seismic. In that case, make sure that you work on copies of the original seismic lines in time. It is thus necessary to take a copy of the complete folder with seismic sections and run this command object on the folder doing a depth conversion on all seismic sections in the folder.
- Seismic sections that are not depth converted if they are outside the cube or velocity field are listed in the message area.
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Gallery
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A time-velocity cube was gridded from stacking velocities. A seismic lines was depth converted.
The seismic line before and after depth conversion is arranged in a connected viewport presentation showing the same coordinate area of the result.
One sees that the depth data is greater in value than the time data.
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Time-velocity cube located outside the coast
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Details of a seismic line converted from time to depth