Volume Resampling

Description Resample volumes temporally, adjust sample rates, perform time-depth conversion and extents (for 3D).
Module(s) Insight
Requirements Volume
Related Volume Interpolation/Extrapolation
Works with 2D, Stacks, Gathers, Dip Fields

This process takes an input volume and creates a result with different spatial and vertical extents. 2D data is limited to vertical resampling only. The process also converts between time and depth if Time/Depth Conversion is configured. 

Notes: 

  • When downsampling (increasing the sample interval or increment), apply an anti-alias filter first.
  • Time/depth conversion using the project settings is disabled in workflows.
  • The process creates spatially interpolates new traces using bi-Lagrangian interpolation. 
  • The vertical interpolation is determined by the class settings of the volume.

 

Warning: This process should NOT be used to vertically resample or perform time/depth conversion on a velocity model. Use a Velocity Conversion process to resample velocities. This process should only be used to add or remove whole traces from a velocity model.

Create a volume resampling process

Create a volume resampling process
  1. In the Control Panel, open the Process tab.
  2. At the tab header, click the Add icon and select New Process.
  3. Double-click Volume Resampling.
  4. Type a name for the process and click OK.

Define the volume resampling settings

Define the volume resampling settings
  1. In the Details Panel, select the input volume to be resampled at Volume. In the example, a 3D volume is chosen.
  2. At the Output Extents section, select an output Survey.
  3. Type the range of Inline extent, Crossline extent, and time/depth extents (TWT/TVDSS) for the resampling process and the respective sample intervals. You can resample the volume vertically along with time/depth conversion if you have defined a velocity volume for the time/depth conversion (see Converting Time-Depth).

 

Note: Click on the Reset icon to reset the values to the default. As a result of this process, a new resampled volume is available in the Volume tab.