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Seismic trace reconstruction - vectorized traces

 

There are a number of seismic trace vectorizing programs on the market, some are very good and some not so good.

 

All of them can produce output that displays as seismic data, but the appearance is sometimes deceptive.

 

The not-so-good category often harbours a hidden feature - a dynamic range of zero.

Software

 

Canesis has developed WinTrack™, a proprietary software package for seismic trace reconstruction/vectorising.

 

WinTrack™ is currently used internally by Canesis' and is not yet available for sale. A commercial release version is in preparation which will feature a streamlined interface for ease of use by occasional users and a selection of post-stack processing routines for use by organisations without in-house seismic processing support.

 

Please e-mail your details to be kept up to date with release information (Canesis will not disclose your contact details to any third party and will not contact you more than 6 times per annum).

 

 

Seismic reconstruction - Vector overlay on seismic image

WinTrack QC - overlay of vector output on the original seismic image

 

 

Mode of operation:

 

1)      Scan original seismic data and transfer the tiff images into the WinTrack™ system. Typically, seismic sections are scanned at 400 p/i (pixels per inch) resolution using adaptive or greyscale thresholding optimise density variations across the section. Where data is densely plotted, scan resolutions up to 800 dpi may be used.

 

2)      Often sections will require raster editing prior to vectorisation to remove interpretation marks, superimposed text and the results of physical damage and deterioration. The interactive image editor allows the user to erase or paint in the areas in need of attention.

 

3)      WinTrack™ digital reconstruction is a two phase process:

a)      Gridding. The program automatically detects timing lines and trace centres to create a grid. The grid incorporates any distortion or skew inherent in the image and eliminates the need to manually de-skew. The timing line information is input to the SEGY vectorisation process and the trace detection provides the trace count. Vector editing tools are available to locally adjust the grid.

 

b)      Reconstruction. Two reconstruction algorithms are available for use dependent upon the data quality.

 

i)        VAW - Variable Area Wiggle - full waveform tracking routine for handling good to medium quality data.

ii)       LQPA - Low Quality Pixel Addition for datasets where minimal discrete trace information can be seen.

 

In either case the vector output data is shown as a QC display overlying the original image.

 

4)      WinTrack™ can be used interactively or jobs may be submitted to run in batch mode as a background task allowing the operator to work on other sections or jobs.

 

System Requirement:

 

PC system, 512 MByte RAM, 1GHz CPU, 40 GByte Hard Disk

Operating System: Windows XP or later

 

Data Input: 1 Bit (B/W) Tiff images, uncompressed or CCITT4 compressed.

Data Output: Tape image SEGY file