Synth Features

Input:

  • Synth uses a log file format which supports multiple curves, formation tops, check shots, and both evenly and unevenly sampled data.
  • The program is bundled with Log Edit, which allows editing of any data in the log file and importing from a variety of formats including LAS, QCtech, Century, Petrorep, and USGS. Log Edit also can change,clip, merge, composite, delete, and replace curves, as well as import or pick tops.
  • All editing can be done graphically using a mouse.

Generating Synthetic Seismograms:

  • All resampling is done using the most accurate anti-aliasing filter available.
  • Include and edit formation tops, and calculate elevation, time, average velocity, RMS velocity, internal velocity, internal time, and thickness for each top.
  • Calculate seismograms from sonic or density curves. Pseudo sonic or pseudo density curves can be calculated and used.
  • Calculate the RMS velocity curve.
  • Choose from a variety of wavelets:
    • Ricker: Defined by period or frequency.
    • Ormsby
    • Butterworth
    • Klauder: Both upsweeps and downsweeps are allowed.Tapers can be applied. Other programs often inaccurately approximate the Klauder wavelets in the frequency domain. Synth, however, calculates the wavelet properly in the time domain by autocorrelating a vibroseis sweep.
    • File Wavelet: Use a trace from a SEGY file.
  • No restrictions on length or sample interval.
  • Extremely smooth resampling.
  • Apply phase rotations, including minimum phase, to generated wavelets. Use any number of wavelets.
  • Apply automatic gain control.
  • Calculate in metric or imperial units.
  • The calculation algorithms are optimized to be as fast as possible. When you change a parameter and regenerate the synthetic, the program will not recalculate everything, only what needs to be recalculated.
  • Specify both depth and time sample intervals.
  • Use and edit check shot data for corrections.
  • Enter or calculate datum and replacement velocity information. You can use check shot data.
  • Generation parameters are remembered from session to session.

Displaying The Seismogram:

  • Synth uses intelligent display algorithms to ensure professional appearing results.
  • Templates control the appearance of a seismogram plot. These templates allow extensive control and flexibility over how and where things are drawn. We ship several templates with Synth, but you can customize your own templates.
  • You can display all curves used or created by the calculations, including sonic and pseudo sonic, density and pseudo density, time/dept, acoustic impedance, reflection coefficients, and RMS velocity curves.
  • Display other curves in the log (ie. gamma ray).
  • Overlay curves over other curves and over seismic traces.
  • Plot in color or black and white.
  • Display wavelets with amplitude (on a linear or dB scale) and phase spectra.
  • Display lithology, elevation and depth tracks.
  • Synth displays the complete tables of formation top and check shot information, and a header with all information required to generate the plot. We have the most complete seismogram header in the industry.
  • Displa parameters are remembered from session to session.

Post Processing Options:

  • Synth has full CAD capabilities for editing a plot. Add, change, delete, or move objects around. Merge parts of other plots into a plot. Simply and easily add your own annotations and labels.
  • Print the plot using a variety of different scaling options. Use 'paneling' that allows any sized plot to be printed on any sized printer.

Exporting Data:

  • Load or merge your saved plots into other applications such as Geocad, and load plots from these applications into Synth.
  • Export seismic traces, as well as any curves used in calculations and any curves in the log, to a SEGY file.
  • Save traces in a log file as a curve in either depth or time. Such curves can then be exported from LogEdit to a wide variety of log formats, including LAS, QCtech, and Schlumberger.
  • Export plots to CGM, DXF, and HPGL/2 formats.

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