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StrataBugs Learning Trail | Section 7: Charts

Correlation Templates

A Correlation template consists of a list of correlation lines, each one based on a correlatable data object of a certain type. Correlatable objects are events, surfaces, and the top and bases of stratigraphic intervals. Each line may have its own drawing style. You can apply many correlation templates to one chart.

With a chart tab open, the tree shows a folder for correlation templates. Below this is a folder for each correlation type. Expand a type to see available templates. The templates with the open triangle symbol are 'standard correlations'. Other templates may display the 'global' or 'project' icon, and may also show a locked icon if they are set to read-only.

Applied correlations, their properties and the chart datum

When viewing a chart tab in the Charts module, you can click between blocks to see a list of the applied correlation templates. Selecting one item from this list shows the properties of that correlation in the table below (double-clicking on an item lets you edit the correlation template). From here you may select one correlation line from one template to be the chart's datum. See here for more information.

Standard correlations

The standard correlations are designed to give you a very quick view of how your wells correlate. When you add a standard correlation, the chart will create correlation lines for items which occur in 'all wells', 'two or more wells', or 'all' of the items. As you edit the underlying data, the standard correlations will be updated with new correlation lines.

Standard correlations cannot have individual line styles and they cannot be used to contain the chart datum. They are designed to be used as a temporary tool, to help you decide which items worth adding to a final correlation template.

Creating and editing a correlation template

Right-click on a correlation type and choose New correlation. Choose a name and project. When you press OK the space beneath the tree shows an empty list, with a toolbar. Add to the list of lines using the toolbar buttons:

  • Add from dictionary - choose any items from your schemes and dictionaries. Note that surface and interval correlation templates can include items from a mixture of schemes.
  • Add from wells - select from a list of all the items which occur in the current chart.

You can remove lines using the delete button.

Save the template using the save button which appears in the toolbar when you make changes.

Right-click on a correlation line to see its properties.

You do not have to set the properties for each line. When you apply the template to the chart, you will choose a default line style. Most lines will inherit this style. Set the style if you want one line to be formatted differently from the others. Lines with their own style appear in bold text in the list.

Line style properties:

  • Colour - stratigraphic interval correlations can be coloured with the unit colour - choose 'inherit from data' to do this.
  • Weight in mm
  • Style - Similar to interval boundary confidence styles. These can be inherited from the data for interval correlation lines (the style may change between blocks).
  • the label can be hidden. The default position is above the line for interval bases and base events, below the line for interval tops and top events, and through (on top of) the line for surfaces and single events.

 


Page last updated: 07-May-2015 10:15