GLOBE Claritas seismic data processing: Wavelet analysis and processing

The Claritas wavelet application lets the user create a wide range of synthetic wavelets or filters, or read in blocks of seismic data from which an estimate of the seismic wavelet can be made. Wavelets or filters output from the application (in ASCII or SEG-Y) can then be applied in a Claritas processing flow using one of the associated processing modules.

Each cell in the wavelet display is created using one of the wavelet operators, which include a wide range of functions such as :

- Convolution and correlation
- Time- or frequency-domain maths
- Matching filters
- Tapering and windowing
- Wavelet reverse, inverse, shift, scale
- Conversion to minimum or zero phase
- Resample
- Autocorrelation
- Hilbert transform
- Trace align and stack
- Wavelet extraction
- Spike, Ricker & Sine wavelets
- Butterworth & trapezoidal filters
- Hanning, Hamming, Parzen & Bartlett windows

The wavelet cells can contain single- or multi-channel data, and the programme can be run using pull-down menus or keyboard commands and a macro processing language. Any interactive session is stored as a series of macro commands into an ASCII session-file, allowing the session to be re-entered at a later stage.

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