Creating Fracture Profile Diagrams

RockWorks | Borehole Manager | Fractures | Profile

Use this program to:

• Create a new 3-dimensional solid or block model representing distance to fractures or to fracture intersections across the study area (an .RwMod file) - OR - read an existing .RwMod file you've already created.

• Create a 2-dimensional (flat) vertical profile of fracture proximities, sliced anywhere in the study area. Because the model is interpolated across the entire project, you can place the profile slice anywhere you like.

The profile can be color-coded in a variety of ways. Logs can be projected onto the profile panel.  The resulting profile is displayed in the RockPlot2D window. 

Unlike P-Data, T-Data, and I-Data models, Fracture models are created using a specialized modeling algorithm that represents distance to fractures.

See also: Fracture Sections for multi-panel profile slices.

Feature Level: RockWorks Standard and higher
 

Menu Options
Step-by-Step Summary
Tips
 

Menu Options

• Solid Modeling Options: First, tell the program whether you wish to use an existing solid model (from a previous use of this tool or another Fractures menu tool) or you wish to create a new solid model, by clicking in the appropriate radio button.
  ! NOTE This is not trivial. Creating the solid model can take some time, depending on the resolution of the model and the detail of your data. If you already created a pleasing model for display as a fence diagram, for example, you can use the same model, which was stored on disk as an .RwMod file, for the profile.
  • Create New Model: If want to create a new model, click in this radio button, and expand this item to establish the modeling settings.
    • Solid Model Name: Click to the right to enter a name for the solid model, with an .RwMod file name extension.
      
      
    • Model Dimensions: Expand this item to set the model density. (More.)  Unless there's a specific reason to do otherwise, you should probably leave the solid model dimensions set to the current output dimensions.
      
      
    • Type of Model: Use these settings to define the type of frature model to be created:
      • Distance to Closest Fracture: This algorithm assigns block model node values that represent the distance to the closest frature.
      • Distance to Closest Fracture Intersection (Very Slow): This algorithm assigns block model node values that represent the distance to the closest fracture intersection. Due to the huge amount of possible "beta" intersections, this algorithm can be very slow. The resolution of the model also determines the "granularity" of the intersection computations.These models can become very important when performing geotechnical analyses (tunneling, fluid flow, mineralization, etc.).

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    • Negate Node Values: Fracture models represent distance-to-fractures, so sometimes you'll be looking for high values (long distances to fractures representing stable areas) and sometimes you'll be looking for low values (short distances to fractures, for material movement).  
      • Leaving this setting OFF will result in close-fracture areas being at the bottom of the model's scale (low values) and distant-from-fracture areas being at the top of the model's scale (high values).  
      • The Negate Node Values option basically switches the scale around by multiplying the distance values by -1, so that low-valued/close-to-fracture areas now plot at the top of the scale.  This can be particularly handy when displaying isosurface models of fracture proximities in RockPlot3D, and you really want to see close-to-fracture zones.  Though this may not be as relevant for 2D profiles, you will probably want to be consistent with future isosurface models you create.  Note, however, that with Negate Node Values turned on, you'll get negative distance values.
      • Consider the following diagram of a solid fracture model, generated with Negate Node Values turned on, and shown with the isosurface filtered to show only high values.  These represent close-to-fracture zones.

      

    • Smooth Solid: Insert a check here to smooth the solid model G values based on a filter size and number of iterations.  This can generally create a smoother, less "noisy" model. (More.)
      
      
  • Use Existing Model: Click in this radio button if you wish to use an already-existing solid model of your fracture data.  Expand this item to select: 
    • Model Name: Click to the right to browse for the name of the existing solid model (.RwMod file) to be used for this profile diagram. 
       
• Contour Lines: Insert a check here if you want G-value contour lines to be displayed on the profile panel. Expand this heading to set the contour line options.  (More.)
   
• Colored Intervals: Insert a check here to display G-value distribution on the profile panel with color-filled intervals. Expand this heading to select the desired color scheme, and whether you wish to be prompted to confirm the color intervals. (More.)
   
• Plot Color Legend:  Insert a check to include a legend to the G values and their colors.  (More.) 
   
• Plot Logs:  If you would like for the program to append striplogs to your profile diagram, insert a check here. 
  • Clip Logs: Check this sub-item if you want to restrict the logs to a particular elevation range.  This should match the elevation range of the model you are creating at this time (or the existing model, if specified).
  • Include Stripmap: Insert a check here to include a stripmap above or below the profile diagram, which depicts the position of the logs within the search "swath" relative to the profile. Expand this heading to establish the Stripmap location and appearance options. (More.)
  • Show Collar Distances: Insert a check in this box to display at the top of the profile a series of labels that represents each borehole's distance to the profile line. (More.)
  • 2D Striplog Designer: Click on the 2D Striplog Designer tab to the right, to select the items to display in the individual logs to overlay the fractures profile. 

    
     

    • Visible Items:  Use the check-boxes in the Visible Items column to select which log items are to be displayed.  See Visible Item Summary for information about the different log items.
    • Options: Click on any of the Visible Items names to see the item's settings in the Options pane to the right.  See the Visible Item Summary for links to the Options settings.
    • Layout Preview: For each item you've activated, you'll see a preview cartoon in the upper pane.  Click and drag any item to the left or right to rearrange the log columns.  See Using the 2D Log Designer.
       
• Plot Surface Profile:  Insert a check here to include a line on the profile that represents a user-selected grid model, typically the ground surface. Expand this heading to access the line profile options.
  • Surface Profile Options: Click the Options button to select the grid model to be represented, and to establish the profile settings.  (More.)

  
   

• Create Additional Parallel Profiles:  Check this box if you want multiple profile lines to be drawn automatically, offset from the profile that you define. Expand this heading to define the direction and spacing of the automatic profile lines, the maximum distance, and diagram labeling options.  (More.)

  
   

• Show Fault(s): Check this box to display vertical fault lines in the profile, based on the location of one or more fault polylines defined in the project database. (More.)

• Show Infrastructure: Check this box to display buildings, pipes, or other infrastructure with your profile. Click the Options button to define the infrastructure file and plot settings. (More.)

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• Perimeter Annotation Options: Click this button to establish title, border, and vertical exaggeration settings for the profile. (More.)

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• Create Separate Location Map:  Insert a check here to have the program create, along with the profile, a reference map that shows the profile cut's location. It can be embedded in or created separately from the profile. (More.)

  
   

• Profile Selection Map: Click on the Profile Selection Map tab to the right, to select where the profile cut (or multiple cuts, if you've requested parallel profiles, above) to be placed. The most recent profile drawn for this project will be displayed.  (More.)

Step-by-Step Summary

1. Access the RockWorks Borehole Manager program tab. 
2. Enter/import your data into the Borehole Manager. This tool specifically reads location, orientation (if any), and Fractures data.
3. Select the Fractures | Profile menu option. 
4. Enter the requested menu settings, described above.
5. If you are including logs with the profile, be sure to click on the 2D Striplog Designer tab to establish how you want the logs to look.
6. Click on the Profile Selection Map tab to set the profile location.
7. Click on the Process button to create the profile diagram.  

If you've selected Use Existing Model, the program will load the information from the existing fracture model (.RwMod file), and will proceed to diagram generation.

If you've selected Create New Model, the program will scan the project database and extract the XYZ points for all of the downhole fracture measurements.

8. If you requested Confirm Dimensions, the program will first prompt you to confirm the default solid model dimensions.  (More.)

The program will use its dedicated fracture-proximity algorithm to create a solid model of the distance to fractures or the distance to fracture intersections (as requested). The completed model will be stored on disk under the indicated file name. 

If you have requested "Negate Values" then the distances will be multiplied by "-1" so that large distances will become very large negative numbers.

The program will then look at the coordinates specified for the profile cut and determine the closest nodes along the cut in the brand-new model, if created, or in the existing model. It will construct a vertical profile to illustrate the data values, using the selected color scheme.  The completed diagram will be displayed in a RockPlot2D tab in the Options window.

9. You can adjust any of the following items and then click the Process button again to regenerate the profile.
   • Fracture model settings in the Options pane on the left*, and/or
   • Profile settings in the Options pane on the left, and/or
   • Striplog settings in the 2D Striplog Designer tab, and/or
   • Profile location in the Profile Selection Map tab.

   ! Each time you click the Process button, the existing profile display will be replaced. 
   ! * If the fracture model looks OK and you just need to adjust one of the diagram settings, you don't need to keep re-interpolating the model.  Choose Use Existing Model and browse for the .RwMod file to be used for the profile.

10. View / save / manipulate / print / export the profile in the RockPlot2D window.

Tips:

• Use the Stretch button in RockPlot to fill the window with the profile.  This is helpful if the profile is long and shallow. 
• If the profile looks better with a vertical exaggeration greater than or less than 1, you can pre-define this in the Perimeter Annotation Options which will generate better-looking axis annotations.
  
  

 Back to Fracture Menu Summary 

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