TracePrep Modules

Traceprep modules contain groups of related seismic processes, providing a simple upgrade path for existing Traceprep installations. Traceprep users need purchase only the modules they need with the option to upgrade later.

Each module is a self contained dynamic link library, which is loaded by the Traceprep main program

1. TPBase - Input, viewer, scaling, bandpass filtering and output
2. TPUtl - General processing utilities
3. TPWave - Wavelet processing
4. TP2DF - 2 dimensional filtering
5. TPMig - Migration
6. TPView Seismic Viewer

TPBase

Traceprep is supplied as a minimum configuration, with the TPBase module, enabling its use as a multiple window seismic viewer with RMS scaling, mixing, bandpass filtering and output of traces to file.

• INFILE - input from SEG-Y or Lynx trace file
• MIX - n-trace weighted mix
• OUTFILE - output to Lynx trace file
• BPFILT - fixed band pass filter
• RMS - Root mean square trace amplitude balance

TPUtl - Utility Processes

The TPUtl module contains a set of utility processes for performing basic operations for "cleaning up" seismic data, such as raw stacks, or traces vectorised from paper sections (see Lynx Explortion Archivist SSV Seismic scanning and Vectorizing program).

• AGC - Automatic gain control
• LBINSERT - insert labels into trace headers
• LENGTH - change trace length by adding or removing samples
• MUTE - trace mute. Apply or save mutes to file, auto mute by threshold
• RESAMP - resample traces in time
• RESPACE - spatially resample traces
• SHIFT - applies space variant time shifts
• SPINSERT - insert shotpoints into trace headers
• TVFILT - time variant bandpass filter
• TVSCALE - time variant amplitude scaling
• XYCOORD - insert and extract X-Y coordinates in trace headers
• RESPACE - resample traces in space

TPWave - Wavelet Processing

The TPWave module contains seismic 1-dimensional wavelet processing and deconvolution. Includes Autocorrelation test which can be used for analysis prior to 2-window Wiener predictive or zero phase deconvolution.

• ACTEST Autocorrelation test
• DECON Predictive Deconvolution
• NOTCH Notch Filter
• INVERT trace inversion, acoustic impedance
• WAVELET Wavelet convolution
• ZDECON Zero Phase Whitening deconvolution

TPMig - Migration

The TPMig module provides Kirchhoff and Finite difference 2-D migration using time and spatially variant velocities.

• MIGFD - Finite Difference Migration
• MIGKHF - Kirchhoff Summation Migration
• MIGFK - Frequency-Wavenumber migration (under development)

TP2DF - Two Dimensional Filtering

Processes for 2 dimensional dip filtering and noise suppression are provided in the TP2DF module

• XTFILT Recursive time-space domain dip filter
• FXDECON Frequency-space domain prediction filter
• FKFILT Frequency-Wavenumber domain filter (under development)

TPView - Seismic Viewer

Multiple window viewing of 2D seismic sections as Variable Area, wiggle trace , VA/Wiggle, greyscale and colour displays. Viewers can be deployed anywhere in a Traceprep process list, for "before and after" comparisons of processed data.

TPXFer - Transfer data to/from other formats

• SEGYOUT Save traces to SEGY format
• SEGYSP SEGY trace header shotpoint insertion
• XYEXTRACT Extract X-Y Coordinates from trace headers
• XYINSERT Insert X-Y coordinates into trace headers