Defining View Settings (Synthetics)

The View tab in the Control Panel of the Synthetics window allows you to define the tracks and curves to be displayed. You can also select the depth axis to be used, hide/display the annotations and define the default display window and window of interest.

The following parts describe all the sections in the View tab.

Axis

Axis

Depth — Select the depth axis to be used in the time-depth pairing in the Checkshot Panel. Available options include TVDSS, TVDBML and MDKB. You can display the depth axis in project units, international metres or international feet based on your preference. Go to Insight’s Control Panel, select the View menu, and click Preferences. At Display Units, select your choice of the display unit for depth.

Grid lines

Grid lines

Change the colour and thickness of the grid lines by adjusting its Appearance.

The opacity can also adjusted by clicking on the colourbar and then the arrow at the bottom (see Opacity).

Default Display Window

Default Display Window

Define the minimum-maximum vertical extents for zooming out the display of the processing window for all the wells. By default, this is set from 0 to 10,000 (as indicated by the values on the vertical axis of the Well Navigation Panel).

  • Shallow — Select to use a Constant or a Horizon to define the minimum time extent used to zoom out the display of the processing window and type the value. If a horizon is chosen, you can optionally input a constant value in the adjacent box to offset the horizon.
  • Deep — Select to use a Constant or a Horizon to define the maximum time extent used to zoom out the display of the processing window and type the value. If a horizon is chosen, you can optionally input a constant value in the adjacent box to offset the horizon.

Tip: You can override the default display window settings by defining the display window settings specific for a well in the Well tab (see Overriding the Display Window).

Default Window Of Interest

Default Window Of Interest

The generation of synthetics for all the wells is based on the Default Window Of Interest. You can configure the Default Window Of Interest to confine the synthetics, export and mistie analysis to a specific shallow-to-deep distance/time range.

  • Use Display Window — By default this check box is selected, which means the window of interest will take the same settings as the Default Display Window. To define different extents for the window of interest, clear this check box and the Shallow and Deep fields will be available. Type the values for the window of interest extents as per your requirement. The window of interest extents are indicated by the red lines in the Well Navigation Panel.
  • Shallow — Select to use a Constant or a Horizon to define the minimum time extent to generate the results for the synthetics, export and mistie analysis. If a horizon is chosen, you can optionally input a constant value in the adjacent box to offset the horizon.
  • Deep — Select to use a Constant or a Horizon to define the maximum time extent to generate the results for the synthetics, export and mistie analysis. If a horizon is chosen, you can optionally input a constant value in the adjacent box to offset the horizon.

Tip: You can override the default window of interest settings by defining the window of interest specific for a well in the Well tab (see Overriding the Window of Interest).

Annotations

Annotations

This section allows you to display/hide the annotations in the Synthetics window.

  • Well Markers — Select this check box to display the well markers in the Synthetics window.
  • Horzn Markers Select this check box to display the horizon markers in the Synthetics window. Only horizons that are active will be displayed.
  • Marker Lines Select this check box to display the well marker lines across the Well Log Panel and Synthetics-Seismic Panel.
  • Cursor Values Select this check box to display the well curves and synthetics-seismic values at the current location of the green cursor. The curves values will be updated and displayed at the bottom of the Well Log Panel and Synthetics-Seismic Panel as you move the green cursor along the curves. If you do not see the green cursor in the Synthetics window, press Ctrl+Shift+X.
    Tip: The green cursor in the Synthetics window is tied to the green crosshairs in the 3D and section views. As such, as you move the green crosshairs along the well in the 3D or section views, the green cursor in the Synthetics window will also move accordingly.
  • Well Title Select this check box to display the well title at the top of the Synthetics window.

Tracks

Tracks

This section allows you to display/hide the tracks in the Synthetics window. Green indicates that a track is currently displayed, while amber indicates that the track is disabled and not displayed.

Display/hide tracks

  1. To display a specific track, click the amber circle next to the track. The amber circle will turn green.
  2. Click the green circle to hide a track that is currently being displayed. The green circle will turn amber.
  3. Select the check box to make the value range of the curve automatically fits into the track. You can define your own value range by clearing the check box and then typing the value range.
  4. The field beside the check box allows you to define the track width. A zero value means autofit.

Note: The Vp and Vs logs are calculated as follows (it does not require the well data or LAS file to contain a Vp or Vs measurement):

  • Vp is computed from P Slowness (compressional sonic) as 1/DT (with appropriate unit conversions).
  • Vs is computed from S Slowness (shear sonic) as 1/DTS (with appropriate unit conversions).
  • P-Impedance is calculated as (Vp * Density).

Curves

Curves

This section allows you to display/hide the curves in the Synthetics window. Green indicates that the curves are currently displayed, while amber indicates that the curves are disabled and not displayed.

Hide/display curves

  1. Under the Title column, click the green circle to hide the curve. The green circle will turn amber.
  2. To display the hidden curve, click the amber circle.
  3. For the Extra Nav and Well Elastic Logs curves, you can select under the Interp column to interpolate the curves in Linear or Nearest method.
  4. Under the Line column, you can select to display the curve in line, variable area (line curve filled with colours that represent the data) or variable density (column filled with colours that represent the data). Click the icon under the Line column to change the display of the curves.
  5. For a line curve, you can change the line colour, opacity and thickness under the Properties column. Click the colour box and select the colour of your choice. Open the Select Colour window for more colour options and adjust the opacity. The field next to the colour box allows you to type or select the line thickness to use.
  6. For a curve displayed in variable area or variable density, you can edit the class settings of the curve to change the colour bar used to display the curve or select the colour bar in the drop-down box.
  7. Click the Fill from left or right arrow to display the curve in filled colours from the left or right direction. To do the same for well curves that have been linked to default class settings, go to the Control Panel and open the Class tab to edit the corresponding class settings (see Defining Track View Settings).

Tip: In order to display a curve in the Synthetics window, you should first display the corresponding track. For example, if you want to display the "Delta" curve, ensure that you also display the "Delta" track.

Configure Track

Configure Track

Alternatively, you can also configure the track and curve settings by right-clicking on any track in the Well Log Panel or Synthetics-Seismic Panel, and click Configure Track.

This will open the Configure Track dialog box. In addition to defining the track and curve settings, you can rename the track titles here. The example shows the Configure Track dialog box when you right-click on the Vp track and click Configure Track.

Track

  • Title — Type the title of the track.
  • Legend — Click on the amber circle to activate legends for your curves and select the location of the legends box on the track.
  • Width (px) Set the track width in pixels. A zero value (0) will autofit.

Axes

  • Y Axis — Type the range of the Y axis values to display the track. In this example, these are the TWT ms values.
  • Y Axis Value Labels — Select this check box to display the values for the Y axis of the track.
  • Y Axis Grid — Move slider to the right to increase the number of horizontal grid lines in the track.
  • X Axis — Define the X axis value range for the curves in the track, or select the Auto Fit Range check box to allow Insight to automatically scale the axis. In this example, these are the m/s values.
  • X Axis Value Labels Select this check box to display the values for the X axis of the track.
  • X Axis Grid — Move slider to the right to increase the number of vertical grid lines in the track.
  • Scaling — Select Linear or Log to display the curves in the track in the linear or log axis space, respectively.

By default, the Vp track displays the checkshot velocity, well elastic logs, velocity model and Nmo velocity curves as indicated by the green circles in the Configure Track dialog box. You can define the display settings for the curves as described in the "Curves" section.