Overview

Description

GeoVisage is a 3D Visualisation software application for NAPSAC, NAMMU and CONNECTFLOW. It allows the user to load the output from these packages together with a variety of third party formats. The output is shown as 3D representations of the session features. This representation can be manipulated using the mouse and on-screen controls. The appearance can be controlled using a number of user specified properties.

Starting GeoVisage

Start GeoVisage by running the geovisage script located in the bin sub-directory of the installation directory. This is called geovisage.bat on Windows and geovisage on Unix or Linux systems. On Windows it is also possible to run GeoVisage by selecting the GeoVisage entry from the start menu under Napsac or ConnectFlow (depending on how it was installed).

GeoVisage may also be started from within the NAPSAC or CONNECTFLOW graphical user interfaces.

• Select Open GeoVisage from the File menu to start GeoVisage without opening any files.
• Select Open GeoVisage for project from the File menu to start GeoVisage and open the current project.
• Click the 3D graphics button in the Jobs window to start GeoVisage and open the output from the selected job.

Exiting GeoVisage

Exit GeoVisage by selecting Exit (if started from a script) or Close (if started from NAPSAC or CONNECTFLOW) from the File menu of the main window.

Main Window

The main window is displayed when GeoVisage starts. It consists of a menu bar at the top with a tool bar below it. On the left of the window is the session tree and on the right the render panel. The bottom of the window contains progress and status information.

Menus

File menu

Open

Opens a new session file in one of the supported session file formats. Any existing session is discarded.

Save

Saves the session to the current GeoVisage session (.gvs) file.

Save As

Saves the session to a user specified GeoVisage session (.gvs) file.

Properties

Displays the application properties dialog box.
This allows the background colour of the render panel to be set and coordinate axes to be displayed.

Save image

Saves the rendered image to a graphics file.

Exit

Shuts down GeoVisage (only available in stand-alone mode).

Close

Closes the main window (only available when launched from NAPSAC or CONNECTFLOW).

Help menu

About

Displays summary information about the GeoVisage application, including the current version.

Contents

Displays the contents page of the on-line help.

Tool bar

Open

Opens a new session file in one of the supported session file formats. Any existing session is discarded.

Save

Saves the current session to the current GeoVisage session (.gvs) file.

Properties

Displays the application properties dialog box.
This allows the background colour of the render panel to be set and coordinate axes to be displayed.

Save image

Saves the rendered image to a graphics file.

Reset

Resets the rendered image.

Pick

Starts or ends pick mode.
When in pick mode, clicking on a point displays information about it in the bottom right corner of the render panel.

Fly to

Starts or ends fly-to mode.
When in fly-to mode, clicking on a point zooms in on it.

Session tree

The session tree represents the hierarchy of the currently loaded session. Any operation applied to an item in the tree also applies to all items below it in the hierarchy.
Right-clicking on an item in the tree displays a drop-down menu with a list of functions that can be applied to that item. It is possible to apply a function to several items at once by selecting them using shift or ctrl clicking and then right-clicking on one of the items.

Render panel

The render panel displays the 3D image of the visible items in the current session. The following operations are supported:

• Rotation - Hold down the left mouse button and drag the mouse to rotate the image.
• Translation - Hold down the middle mouse button (or shift and left mouse button on a two button mouse) and drag the mouse to translate the image.
• Zooming - Hold down the right mouse button and drag the mouse to zoom the image in and out.
• Reset - Press the r key to reset the image to its starting position.
• Pick - Press the p key to enter pick mode.
• Fly to - Press the f key to enter fly-to mode.
• Surface - Press the s key to change the image to a surface view.
• Wireframe - Press the w key to change the image to a wireframe view.

Application properties

The application properties dialog box allows the properties of the GeoVisage application to be changed.
The dialog box is displayed when Properties is selected from the File menu of the main window or the Properties tool bar button is clicked.

1. Select the background colour of the render panel by clicking the adjacent coloured button to select the colour to use.
2. Tick Show coordinate axes to display coordinate axes in the render panel.
3. Select the colour of the coordinate axes.
4. Enter the number of tick marks per coordinate axis.

Feature properties

The feature properties dialog box allows the properties of selected features to be changed. It is divided into a number of tabbed panels containing related properties.
The dialog box is displayed when Properties is selected from the right-click menu of an item in the session tree.

Colour

Defines how rendered features will be coloured.

1. Select fixed colouring or colouring by attribute.
2. For a fixed colour, click the adjacent coloured button to select the colour to use.
3. If colouring by attribute, select the attribute and units and define the colours and values to use.
   An isosurface representation may be used.
   Display a legend if desired.
4. A transparency value can be assigned to the features.

Stripping

1. Tick Layer (layered features only), Position, Attribute or Random to select that stripping method. Multiple methods can be chosen.
2. For stripping by layer, position or attribute, enter the ranges to limit the stripping.
   Also choose whether or not to strip undefined values and whether to strip features inside or outside the specified ranges.
   Use the Recalculate button to restore the automatically calculated ranges.
3. For random stripping, select the percentage of cells within each feature to strip.

Slices

1. Tick Enable slices to enable slices or untick it to disable them.
2. Define whether or not to display the defining slice planes, their colour, transparency and whether or not they are filled.
3. Click the Add button to add a new slice plane.
4. Click the Remove button to remove selected slice planes.
5. Click the Clear button to remove all slice planes.
6. Use the Slices table to define the position, size and direction of each slice plane.

Transformation

1. Tick Apply transformations to enable transformations or untick it to disable them.
2. Select the centre of the applied transformations, which by default is the centre of the model the features belong to.
3. Enter rotations in the X, Y or Z directions.
4. Enter scale factors in the X, Y or Z directions.
5. Enter translations in the X, Y or Z directions.
6. Click the Reset button to restore the defaults.

Lighting

1. Set the relative amounts of ambient (background), diffuse (reflections from matt surfaces) and specular (reflections from shiny surfaces) lighting.
2. Set the specular power to define how shiny the surfaces are.
3. Select either flat, Gouraud (higher quality, but slower) or Phong (highest quality but slowest) shading.
4. Click the Reset button to restore the defaults.

Annotation

1. Tick Display annotation to show annotation text or untick to hide it.
2. Select one or more styles to use.
3. Select the horizontal and vertical alignment.
4. Select the colour, font size and transparency of the annotation text.
5. Click the Reset button to restore the defaults.

Clustering

The clustering dialog box allows clustering to be performed for a selected realisation.
Clustering shows connectivity between fractures and wells or between fractures and a point in space by only displaying connected fractures.
The dialog box is displayed when Clusters is selected from the right-click menu of a realisation.

1. Tick Enable clustering to show clusters or untick to hide them.
2. Tick Show results to show the results of clustering calculations.
   The results are displayed after the clustering process is complete.
   The results can be saved as HTML or CSV files.
3. Enter the number of levels of clustering.
   Level 1 includes only fractures intersecting with a point or selected wells.
   Level 2 includes fractures intersecting with the level 1 fractures and so on.
4. Select whether to cluster around a point or selected wells.
5. Enter the coordinates of the point to cluster around if clustering by point.
   The fracture whose centre is closest to the coordinates will be the start point of the cluster.
6. Select the wells to cluster around if clustering by well.
   Multiple well selection is supported by shift or ctrl clicking.
7. Click the OK or Apply button to start the clustering.

Pathlines

The pathlines dialog allows pathlines to be defined for a selected realisation.
Pathlines show the tracks of particles released from one or more sources within the realisation.

Definition

1. Tick Show pathlines to show pathlines or untick to hide them.
2. Select a data source for the pathlines.
   This is only enabled if there is more than one source.
3. Enter the maximum time and time step limits for the pathlines.
4. Enter a random number seed for pathline definition if desired.
   The same set of pathlines will always be generated from a specific seed and set of definition settings.
5. Choose a spherical or planar particle source.
6. Select whether particles will be generated from the node nearest the centre of the source, from random nodes within the source or flux weighted random nodes within the source.
7. Tick Show results to show the results of pathline generation and select the unit of time to use.
   The results are displayed when the OK or Apply buttons are clicked.
   The results can be saved as HTML or CSV files.
8. Click the Add button to add a new particle source.
9. Click the Remove button to remove selected particle sources.
10. Click the Clear button to remove all particle source.
11. Use the source table to define the position, size, direction and number of particles of each source.
    If no nodes are within the regions of any defined source then no pathlines will be produced.
    Each new source added will copy the definition from the last source in the table.

Appearance

1. Select fixed colour or colour by attribute.
2. For a fixed colour, click the adjacent coloured button to select the colour to use.
3. If colouring by attribute, select the attribute and units and define the colours and values to use.
   Display a legend if desired.
4. Select the style of the pathlines and their sizes.
   It is also possible to colour and strip fractures by particle density.
5. Select whether or not to display particle sources, their colour and whether or not they should be filled.

Flux planes

The flux plane dialog box is used to calculate the flux within fractures passing through one or more specified planes.
The dialog box is displayed when Calculate flux through planes is selected from the right-click menu of a realisation.

1. Click the Add button to add a new plane.
2. Click the Remove button to remove selected planes.
3. Click the Clear button to remove all planes.
4. Use the Planes table to define the position, size and direction of each plane.
5. The results of the calculations are displayed after the OK or Apply button is clicked.
   The results can be saved as HTML or CSV files.

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