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Geoscience > Main Launcher > Seismic Menu > Seismic Viewer > Additional Resources > Flattening

Seismic Viewer: Interactive Horizon Flattening

You can quickly use a horizon to flatten your seismic display. This applies is just a visual flattening and can be toggled on and off once the parameters are set. To permanently flatten a dataset, use Batch Processing.

ClosedHow do I quickly flatten the seismic display on a horizon?

Method 1:

  1. Click on the horizon flattening icon or select Flatten  from the Horizon menu.

  2. Double click on the horizon that you want to use to flatten the data. The display should update and be flattened.

Note: The data is flattened to the time/depth of your cursor when you double click on the horizon. To set specific flattening parameters, use the dialog that appears, complete the parameters and the click .

Method 2:

  1. Hover your cursor over the horizon you want to use the flatten the data, and use the keyboard shortcut N. The data is flattened to the time/depth of your cursor.


ClosedHow do I turn toggling off and on?
  1. Once flattening parameters are set, you can quickly toggle flattening on or off using either the Toggle Flattening icon  or by selecting Toggle Flattening from the Horizon menu.  Turning this on will draw the seismic display with the defined flattening parameters in the Horizon Flattening dialog. Turning this off will return the seismic display to its original appearance, however the original flattening setting will remain in memory.

ClosedHow do I remove flattening?
  1. To remove flattening permanently, re-open the Horizon Flattening dialog and click . All flattening parameters will be removed.

General Information

To launch horizon flattening click on the Flatten Horizon icon or select Flatten  from the Horizon menu. 

Select Horizon and Datum

Select Horizon to Flatten on: Select the horizon that you want to flatten the seismic on. Left click to select a horizon from the list. To make the horizon selection easier, left click on the column headers to sort the column,

Datum: Enter the datum value in the units of the seismic you are viewing.

Flattening Parameters

Blank traces without picks: If this item is turned on, traces that do not contain a horizon pick will be blanked out in the horizon display.  If this is turned off the traces will appear at their original unflattened location.

Apply traces to subsequent views: When this item is turned on, the next time you bring up a Seismic Viewer the data will be flattened using the given horizon and datum time.  When turned off, the next time you bring up a new Seismic Viewer the flattening parameters will be forgotten, and the data will appear unflattened.

Smoothing

Apply smoothing to horizon: When toggled on the horizon will have a smoothing algorithm applied to it before the data is flattened.  This can be used to provide a smoother, more presentable flattened display.  When toggled off no smoothing is applied to the horizon before it is flattened.

Algorithm: This specifies the smoothing algorithm to use when Apply smoothing to horizonis toggled on.

Grid Size:  This specifies the number of horizon picks to use in the smoothing calculation when Apply smoothing to horizonis toggled on.  This value must be an odd number.

Also See

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