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SAMUEL Compact Seismic Interpreter Lite Tutorial



    SAMUEL_CSI_LITE is a seismic visualization tool. Click on images to see larger view. The newer versions of SAMUEL are following the "Green" environmental recommendation by reducing the amount of "white light", hence the darker backgrounds.


    To begin, Enter desired database information into the SAMUEL DBMS dialog, select OK to continue. SAMUEL DBMS not available via free downloads. The DBMS version is permits the user to use database (OCI, ODBC, SQL, SQLITE, TDS(Sybase), MySql, DB2, etc.) for storage of seismic sessions and seismic management.
    Select the "SEGY Analysis..." button from the main window. The Parameter Scan GUI allows access to files on the local system or across a local network. The current "free" version permits only the analysis and viewing of seismic files without the full range of functionality for 2D & 3D parameter scanning. User can view leading Textual Headers, Binary (line) Headers, Trace Headers and view section displays.
    Select "File" from Parameters GUI to access SEGY formatted seismic data.

    Standard user file selection GUI. File types can be selected by *.sgy, *.segy or simply *. Select SEGY file to analyze.

    Select "Textual Header" above to view leading EBCDIC/ASCII textual header. Select EBCDIC or ASCII to view leading Textual Header.

    Select "Binary Header" above to review 400 byte Line header for key fields. Use vertical scrollbar to view complete header. The override functionality is not supported in the "free" release.
    Key bytes are 17 (Sample interval), 21 (Number samples) and 25 (Sample format). Review of Binary Header.


    Select "Trace Header" from (1) above to analyze key trace header byte locations & formats.
    Scroll horizontally to step through trace headers.
    Key fields to review are for trace number, shot point, cdp, inline, crossline, sample rate, datum, xy values, etc.
    Use vertical scrolbar in window on right to view amplitude values.
    The override options for header length, sample format, etc. are turned of in this version.


    Trace header and amplitude analysis.


    Trace header and amplitude analysis continued.
    Green byte location buttons indicate that the format of these fields can be toggled .
    Header is immediately updated as new format is selected. Note (7) below.


    Note the toggle of byte 1 from 32 bit to 16 bit.
    Use slider or spin box at top to change current trace. Select "Analyze Trace" button.


    Wiggle Trace Display for single trace analysis.
    Use Amplitude Clip/Scale horizontal slider to analyze trace amplitude values.
    The vertical scrollbar is used to shift the time/depth window visible.
    The Wiggle Box parameter restricts the number of pixels in which the wiggle will be displayed.
    Sample and Trace pixel parameters are selectable permitting independent zoom of horizontal and vertical parameters.
    Buttons for "Wiggle", "Variable Area" and "VA with Wiggle Overlay" are used to view seismic sections.


    Example of updating sample range in view via vertical scrollbar.
    Note the horizontal Amplitude Clip/Scale slider has been modified to adjust the "clip" range of the amplitudes.
    The real range is the maximum negative and maximum positive values for the trace.
    These values are scaled to +/- 127 for 8-bit display.


    Compare modifications for scaling and clipping values via the "Amplitude Clip/Scale"
    slider to the example above.


    The "Wiggle Box" parameter is used to limit the pixels used for viewing a single seismic trace.
    Use this function to modify section viewer display.


    Example of "Wiggle Section" display with "Wiggle Box" value of 2 selected.
    Note the zoom and unzoom icons on the left.
    Zoom and unzoom each operate by adding or substracting 1 pixel from the sample & trace parameter box.
    Use horizontal and vertical scroll bars to step through seismic.




    Select "Variable Area Section" to display seismic.


    Example of "Variable Area Section" display with "Trace Pixel" value of 1 selected.
    Select "Parameters" button from seismic display window.


    Seismic Viewer Display Parameters for colormap, annotation, zoom parameters.


    Seismic View of zoomed area with Variable Area with Wiggle overlay.


    After reviewing trace header and trace sample data, having selected the key header parameters, user may choose to input the Line Alias (project line name) and the Process Alias (used to permit multiple versions of same line alias). Select Scan/Load to create the SAMUEL Scan Analysis Report and the encrypted SAMUEL storage file used by the Compact Seismic Interpreter to manage seismic and associated interpretation.


    After the scan is complete, the Seismic Report form can be reviewed.


    When accessing the scanned data from the Interpretation module, the appropriate *csi2d or *csi3d module will be selected.


    The Report form will be displayed then the Seismic Select Dialog will display. The Seismic Select Dialog is used to determine the range of the initial seismic display. User may use the display controls (icons) from the Intepreter window to step/scroll the selected volume.


    Resulting Interpreter display via selection of *csi2d file.


    3D Survey Stratton 3D showing Loop display (Inline 1, Xline 200, Inline 100, XLine 1).


    SAMUEL CSI Color Map Manager.


    Improved handling of high resolution seismic allowing sample decimation. Future release will perform subsampling with anti-aliasing. The current display is the Binary header with defaults now in microseconds.


    Trace header with samples displayed in microseconds, in this case 62 microseconds.

    Trace analysis with samples displayed in microseconds, in this case 62 microseconds.


    Seismic display with sample decimation and modified annotation.


    Typical seismic display with sample decimation.


    Seismic Volume Scale & Clip Statistics tool for interactive scaling.


    3D Seismic Horizontal "Slice" View.


    3D Seismic XLine/Inline/Horizontal "Slice" View.