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Description

This module is deprecated. Use Smooth 3D or Smooth 3D EXT for current workflows.

Smooth 3D Azimuth applies azimuth-sector smoothing to a 3D seismic volume by averaging samples within a configurable inline, crossline, and time window for each azimuth sector. The module reads directly from an SEG-Y file and writes the smoothed output to a new SEG-Y file. It is intended for azimuthal attribute smoothing, such as preparing azimuthal velocity or amplitude cubes for fracture analysis.

Input data

SEG-Y data handle

The input SEG-Y data file handle containing the 3D seismic volume to be smoothed.

Original trace headers

The trace header collection providing inline/crossline geometry for the 3D volume. The module derives the inline and crossline counts from these headers.

Parameters

Output file name

The path and filename for the smoothed output SEG-Y file. The file will be created at this location when the module executes.

Ignore value

Samples with this exact value are excluded from the averaging window. Use this to prevent null or missing-trace values from contaminating the smoothed output. Default: -1.

Smooth grid X

The half-width of the smoothing window in the inline direction (number of traces). Larger values produce more spatial smoothing. Default: 50 traces.

Smooth grid Y

The half-width of the smoothing window in the crossline direction (number of traces). Default: 50 traces.

Smooth grid Z

The half-width of the smoothing window in the time/depth direction (number of samples). Default: 50 samples.

FirstAzimuth

The starting azimuth angle (in degrees) for the first azimuth sector to be processed. Default: 10 degrees.

LastAzimuth

The ending azimuth angle (in degrees) for the last azimuth sector. Default: 170 degrees.

HalfStepAzimuth

The half-width of each azimuth sector (in degrees). Traces within ±HalfStepAzimuth of each sector centre are included in that sector's smoothing window. Default: 10 degrees.

Use adaptive window

When enabled, the smoothing window adapts its size iteratively to achieve a more statistically robust estimate. Contains two sub-parameters:

Use adaptive window

Toggle to activate the adaptive window mode. Default: disabled.

Max iterations count

The maximum number of adaptive window iterations. Only used when the adaptive window mode is enabled. Default: 5.