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You are here: Working in the Map window > Create and Manage Slices > Creating Consistency Slices

Create 3D Consistency Slice Files

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From the Map menu bar select Slice | Create Consistency Slice to open the Create 3D Consistency Slice dialog box.

About Consistency Slices

Consistency slices are a statistical measure of the trace-to-trace similarity. They are useful in examining fault edges, locating anomalies, or identifying data problems. When ProductName performs a consistency calculation, it sums up the products of semblance over the entire time gate, normalizes the sum, and then identifies that value as the consistency of the middle of the analysis window. Then ProductName moves down one sample and performs the calculation again.

Consistency slices may be calculated on the fly from an existing amplitude slice file to save disk space or posted from a pre-computed consistency slice file to save posting time. This section describes how to create the consistency slice file. See also Creating Amplitude Slice Files.

Create Consistency Slices

  1. In the 3D Seismic Volume List, select the 3D seismic you wish to include.
  2. Select the Data Type. The default data type is your current version, which is the 3D seismic file with the largest extension number. You may select a different version of your 3D file or an instantaneous attribute file.
  3. Set the Sample Type as Original, 16-bit Int, or 8-bit Int for the output slice file. If the hard disk space is at a premium, select 8-bit Int.
  4. Specify a top and a bottom time range in milliseconds under Slice Time Range. You can slice the entire volume or select smaller subsets to save time and disk space. Ranges of data can be added to existing slice files later (see Adding to Existing Slice Files).
  5. In the Time Window and select milliseconds or microseconds. The time window is the temporal parameter of a consistency slice. This setting depends on the resolution of your data. 10 ms is the default and is a good value for data sampled at 2 ms.
  6. The neighboring bins determine the spatial parameter of the consistency slice. Select a number of Neighboring Bins over which the comparison is run. This setting depends upon the trace-to-trace variability of your data and available memory.
  7. Type a value for the working buffer.
  8. Click <OK>to begin the calculation.

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