Use the Striplog P-Data check-box(es) to plot downhole point data in the 3d log. Several display styles are offered. Up to 4 P-Data columns can be included in each log. The data is read from the P-Data (Points) table in the RockWorks Borehole Manager database. When you click on the P-Data items in the layout window you’ll see the following settings in the pane to the right. The settings for each column can be established independently.
Menu Options
- Track: Use this setting to tell the program which track of values in the P-Data datasheets you wish to plot for the selected P-Data Column (#1, #2, #3, #4). When you click on this item, the program will display the current list of track names; click on a name to make a selection. Each P-Data column you activate can read from a different track. Expand this heading to access data filter settings.
- Filter based on G values: Insert a check here to discard or replace high and/or low data values from the selected track for display in the logs. Subsequent automatic scaling of the P-Data columns will be based on the resulting G value range. (More.)
- Resample at regularly-spaced intervals: Insert a check here to resample the data from the selected track for display in the logs. This is very useful when dealing with large datasets with closely sampled downhole data. (More.)
- Column title: Click here to enter text to be displayed above the column. If no title is desired, you can leave this field blank.
- Offset Direction: This reflects the position of the column, relative to the log axis (center), with 0 = north, 180 = south, and so on. As you click and drag the P-Data column in the Layout Preview pane (top), this value will be updated. Conversely, if you edit the azimuth direction in this prompt, the Preview will be updated.
- Offset Distance: This represents the distance of the P-Data column center from the log axis (center), expressed as a percent of the output dimensions. As you reposition the column in the Layout Preview pane at the top of the screen, this value will be updated. And, as you edit the offset distance here, the Preview will be updated.
- Column Radius: The radius of the P-Data column is established as a percent of the output dimensions. As you click and drag to resize a column in the Layout Preview at the top of the window, this setting will be updated. If you edit the radius via this prompt, the size of the column in the Preview will be updated.
- Scaling: This controls how the range of point-data is plotted within the available column width.
- If you choose Automatic, RockWorks will scan the range of value in the specified Track for all of the active boreholes, thus determining the project’s minimum and maximum point-data values sampled. It will then assign the inside of the curve column to the project’s minimum value and the outside of the column to the project’s maximum. Benefits: If you are plotting multiple boreholes, this assures that the data is plotted at the same scale in all logs.
- If you choose Manual, you can establish the point-data value to correspond to the inner (minimum) and outer (maximum) edge of the curve column. Let’s say, for example, that your elog values in all wells ranged from 24 to 142, you might want to set the Minimum to 0 and the Maximum to 150.
- ! Note that the plotting direction, established below, determines which edge of the column is assigned the minimum value and which is assigned the maximum.
- Logarithmic: Insert a check here if you want to plot the natural logarithms of the P-data values.
The following 3D diagrams illustrate the usefulness of this new capability. In the upper-left diagram, the logarithmic option is disabled. One of the logs contains a very high value. As a consequence, the variations within the low values in the other logs is virtually indistinguishable. The logs in the lower-right diagram are logarithmically scaled. Notice how the variability within the lower ranges become readily apparent. For example you can tell the difference between a low value and a missing sample (i.e. a black axis line).
- Fill Curve: This check-box setting, if activated, will fill the inside of the curve with a solid color. Expand this heading to choose the fill color.
- Plot Line: This, if activated, will plot the curve line in the selected line style, thickness, and color. You can use fill only, line only, or both line and fill (at different colors, if you wish).
- Disks: Insert a check here to display point data as centered disks in 3D logs. If you choose Disks, you should probably not activate the Fill Curve or Plot Line options, above. Please refer to the sample image for the logarithmic logs, above, for an example of P-Data disks.
- Color Options:
- Monochrome: Choose this option to display the disks in a single color; expand this heading to choose the disk color. Examples of monochrome (blue) disks are shown at the top of this page.
- Cold -> Hot Colors: Choose this option to display the disks on a cold-to-hot color scale from low to high values. Examples of variably-colored disks are also shown at the top of the page.
- Based on Lookup-Table: Choose this option to assign disk colors based on a user-defined color table. Expand this heading to browse for the name of the color table file that contains the p-data value ranges and colors to be associated with them. This could be the same color table that you use to colorize a P-Data model.
- Constant Radius: Insert a check in this box to display the disks at a constant radius, overriding any scaling options. It's generally best to use this option with one of the two variable-color choices, above.
- Disk Thickness:
- Automatic: Under this setting, the program scans the data to find the smallest interval and the disk is centered on its depth.
- Manual: Choose this if you wish to enter a specific value for the disk thickness, in your output elevation units.
! Selecting a thickness greater that the actual sample interval can cause data to be hidden.
See also Miscellaneous Options for settings that establish the font size and offset for the column title, activate horizontal and/or vertical divider lines, etc.
Back to 3D Striplog Options
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