Log Body Items - Fracture Columns

How it's Used
How to Insert a Fracture Column into a Log Design
Menu Settings
How to Review the Settings

How its used: A Fracture column is used to display fracture orientation at depth, as projected lines. The lines can be fixed or variable in size and color.

How it works: As you compile your log in LogPlot, the program will read depth, dip direction, and dip angle from a Fracture datasheet. It will project the fracture onto the specified plane with lines of fixed or variable colors and thickness.

Access the Log Designer program tab.
Click in the log body design pane to make it active. (Use the Visible Sections check-boxes to show/hide the different design panes.)
Click on the Fracture button in the tool pane.
Position your mouse pointer where you want the left edge of the column to be, in the log body portion of the design screen, and press the left mouse button to insert it. The program will display the Fracture Column Setup window.
Click on the Main tab to enter the fracture-specific information:

Name: Enter the name for this Fracture column. Any data in a Fracture datasheet that is flagged with the same name will be plotted in this column.

Position: These coordinates determine the horizontal placement of the Fracture column in the body of the log. The horizontal coordinates are expressed in decimal inches or centimeters relative to the left edge of the design screen. You may change the column's position by editing these values, or by widening/narrowing the column itself on the work screen (see Moving and Resizing Log Body Components).

Frame Column: If this box is checked, the column will be bounded by a solid-line rectangle.

Line Color: Choose Column-Based if you have declared colors for each measurement in the data file. Choose Fixed to select a constant color for the fracture lines.

Color: Click here to choose a color for the lines if you've chosen Fixed, above, or for any Column-Based colors that are not declared.

Line Width:

Choose Fixed for the lines to be a constant width. Use the up/down arrows to define the width for the lines, in pixels.

Choose Aperture Based if you want the width of the lines to be dependent on the Aperture defined in the datasheet.

Minimum Aperture: Type in the number of pixels to be used for the thickness of the fracture lines, for the fracture measurements with the smallest aperture values. For example, if you enter "1" then the fractures with the smallest apertures will be represented on the log with lines with a thickness of 1 pixel.

Maximum Aperture: Type in the number of pixels to be used for the thickness of the fracture lines, for the fractures with the largest aperture values. For example, if you enter "3" then the fractures with the largest apertures will be represented on the log with lines with 3-pixel thickness.

Line Length:

Radius Based: Check this box if the length of the lines are to be based on the Radius measurement in the data file. Leave this unchecked for lines to be scaled to fill the column width.

Minimum Radius: Type in the length for the lines, as a percent of the width of the fracture column, for those fractures with the smallest radii. For example, if you enter "50" then the fractures with the smallest radii will be represented with lines whose lengths are 50% of the width of the column.

Maximum Radius: Type in the length for the lines, in percent, for those fractures with the greatest radii measurements. For example, if you enter "100" then the fractures with the largest radii will be drawn with lines whose lengths are 100% of the width of the column.

Projection View Direction (degrees): This setting defines how the oriented fractures will be projected onto the diagram. Enter the direction from which the apparent dip of the fracture is to be viewed.

Dip Convention:

Choose From Horizontal if your dip measurements are entered in degrees from horizontal (0 = horizontal,+ 90 = straight down).

Choose From Vertical if your dip measurements are entered in degrees from vertical (0 = straight down, +90 = horizontal).
To accept the displayed information, click the Apply button. You will see the Fracture column placed in the design screen. You may continue to adjust the settings if necessary; remember to click Apply any time you want your changes applied.
To close the Setup window, click the Close button.

If you need to access the Options window you can:

Double-click on the Fracture Column.
Or, right-click on the Fracture Column and select Edit Item.
Or, double-click on the Fracture Column in the Item View at the bottom of the design window.

Move or Resize Log Body Items for information about dragging, resizing, and aligning items.

Back to Log Body Item Summary

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