Creating Strip Logs & Log Sections - Overview
There are a variety of tools available in the Borehole Manager's Striplogs menu for creating 2-dimensional (flat) or 3-dimensional logs of individual or multiple borings. The log data is taken directly from the Borehole Manager data tabs.
The log options are pretty much the same for these different log views. You may choose to include any combination of the following in the logs: Well name, depth labels, lithology patterns and/or labels, stratigraphy patterns and/or labels, well construction patterns and/or labels, 1-4 curves (for downhole point data), 1-4 bar graphs (for downhole interval data) and/or labels, aquifer intervals, special symbols, special pattern blocks, fracture discs (3D), fracture or vector tadpoles (2D), vector arrows (3D), raster images, and border annotation.
NEW! In addition to the new log items in this version, there’s a new 2D and 3D log designer window. Activated (checked) log components are shown in the design pane where you can click and drag to change their position in the log.
2D log designer
3D log designer
See also: Profiles and Sections in Chapters 6, 7, and 8 for information about creating vertical slice views (“profiles”) of interpolated stratigraphic or solid models.
See also: Log Options on page 274 and 279.
Creating 2D Logs, Log Profiles, and Projected Log Sections Creating a Single 2D Strip Log
Use the Borehole Manager's Striplogs / Single Log (2D) tool to create a vertical, 2-dimensional (flat) strip log of a single well. The log can include any combination of the available log items listed on page 118. The log data is read from the database. The boring can be vertical, inclined, or deviated.
Menu command: Striplogs / Single Log (2D) Output window: RockPlot2D
Notes: Before selecting the menu command, be sure to click on the name of the borehole whose data is to be displayed in the log, so that its name is highlighted. Be sure also that the check-box to the left of the borehole name is checked so that the borehole is enabled.
Borehole Manager Tutorial.
Help / Contents / Working in the Borehole Manager / Logs and Cross Sections / Creating a Single 2D Striplog.
What is a Log Profile?
A log profile is one in which the logs of individual borings are "projected" onto a single profile line cut.
These diagrams can display vertical, inclined, and deviated boreholes. By projecting onto a line of section, the orientation of the logs will be honored.
In log profiles, the distance between logs is determined by their perpendicular projection onto the profile line. (This differs from hole-to-hole sections, in which the distance between the logs is proportional to the well distances on the ground.) In RockWorks, drawing the profile line is easily done on a plan-view display of the well locations, or you can enter known coordinates for the section endpoints. In addition, you can enter a filtering distance to limit the cross section to only proximal wells.
Help / Contents / Laying Out Vertical Sections and Fences.
Displaying Multiple Logs in a 2D Log Profile
Use the Borehole Manager's Striplogs / Multi-Log Profile tool to create a projected 2-dimensional vertical display of strip logs of multiple boreholes. The logs can include any
combination of the available log items listed on page 118. The log data is read from the database. The borings can be vertical, inclined, or deviated.
Menu command: Striplogs / Multi-Log Profile Output window: RockPlot2D
Notes: When drawing the profile line among the boreholes, the program offers a
“clipping” zone beyond which distant logs will not be projected onto the profile. See page 145 for information about drawing the profile slices.
Help / Contents / Working in the Borehole Manager / Logs and Cross Sections / Displaying Multiple Logs in a 2D Profile.
What is a Hole to Hole Cross Section?
A hole to hole cross section is created by selecting individual boreholes, in any order, that are to be displayed from left to right in the section.
Hole to hole sections can include strip logs (with any/all available log items displayed).
The logs can be hung on any listed stratigraphic interval.
In hole to hole sections, the distance between logs is proportional to the physical distances between the boreholes on the ground. (This differs from log profiles, in which the distance between logs is determined by their perpendicular projection onto a single profile line.) Because the hole to hole trace can contain multiple segments that differ in direction, it’s impossible to project a 3-dimensional log, so all boreholes are plotted as vertical.
In RockWorks, drawing the hole to hole section lines is easily done on a plan-view display of the borehole locations. The program will remember the traces from one session to the next within the current project.
Displaying Multiple Logs in a 2D Hole to Hole Section
Use the Borehole Manager's Striplogs / Multi-Log Section tool to create a 2-dimensional vertical display of strip logs of multiple boreholes. The logs can include any combination of the available log items listed on page 118, whose data is read from the data tabs. Multi-log sections also offer the ability to hang the section from a selected stratigraphic unit.
Menu command: Striplogs / Multi-Log Section Output window: RockPlot2D
Notes: Unlike log profiles, logs in hole-to-hole sections must be plotted as vertical.
In a hole-to-hole cross section, the order in which the drill holes are selected will make a big difference in the appearance of the diagram. The first hole you select, regardless of its position in the map, will be at the left edge of the cross section, and the last will be at the right edge. The intermediate drill holes will be spaced in the diagram relative to each other in space. You do not need to include all boreholes in the cross section.
See page 147 for information about drawing the section trace.
Borehole Manager Tutorial
Help / Contents / Working in the Borehole Manager / Logs and Cross Sections Sections / Displaying Multiple Logs in a 2D Hole to Hole Section.
Creating 3D Logs
Creating a Single 3D Strip Log
Use the Borehole Manager's Striplogs / Single Log 3-D tool to create a three-dimensional view of the strip log of a single well. The log can include any combination of the
available log items listed on page 118. The log data is read from the database.
Menu command: Striplogs / Single Log 3-D Output window: RockPlot3D
Notes: Before selecting the menu command, be sure to click on the name of the borehole whose data is to be displayed in the log, so that its name is highlighted. Be sure also that the check-box to the left of the borehole name is checked so that the borehole is enabled.
Help / Contents / Working in the Borehole Manager / Logs and Cross Sections / Creating Single 3D Strip Logs.
Displaying Multiple Logs in 3D
Use the Borehole Manager's Striplogs / Multi-Log 3-D tool to create a three-dimensional view of the strip logs of two or more wells. The logs can include any combination of the available log items listed on page 118. The log data is read from the database.
Menu command: Striplogs / Multi-Log 3-D Output window: RockPlot3D
Notes: Before selecting the menu command, be sure to click on the name of the borehole whose data is to be displayed in the log, so that its name is highlighted. Be sure also that the check-box to the left of the borehole name is checked so that the borehole is enabled.
Borehole Manager Tutorial
Help / Contents / Working in the Borehole Manager / Logs and Cross Sections / Displaying Multiple Logs in 3D.
Log Item Summary
The following items are available for display in strip logs, displayed individually or in groups, in 2D or in 3D. Note that not all components are available for all log views.
Title: Plots the boring's name at the top of the log, read from the Location tab. Font settings adjust the text orientation, thickness, etc. 2D and 3D.
Axis: Plots the log's trace down the hole. This is always activated and is the location above which the title is plotted. You can adjust the line style, thickness, and color.
Handy also for simply showing well locations in sections and 3D views. 2D and 3D.
Depth Labels: Plots depth labels down the left side of the log. Settings include labeling interval, font style, etc. 2D and 3D.
Curve 1-4: Plots a point to point curve, with or without fill, representing data read from columns in the P-Data table. The Curves have a variety of settings, and in 3D you have the option of plotting discs. 2D and 3D.
Bargraph 1-4: Plots a bargraph representing data read from columns in the I-data table.
The bargraphs have a variety of settings. 2D and 3D (the latter offers additional display types).
Stratigraphy Column: Plots a column containing intervals of pattern and color that correspond to formation names listed in the Stratigraphy data table. The pattern <->
stratigraphy name association is made in the Stratigraphy Type Table. Options include column width and inclusion of formation names and thickness. 2D and 3D.
Lithology Column: Plots a column containing intervals of pattern and color that correspond to observed rock types listed in the Lithology data table. The pattern - rock type association is made in the Lithology Type Table. Options include adjusting the column width, and inclusion of lithology "keywords,", depths, and/or thickness. 2D and 3D.
Well Construction Column: Plots a column containing intervals of pattern and color that correspond to material types rock types listed in the Well Construction data table.
The pattern – material name association is made in the Well Construction Type Table.
Options include adjusting the column width, and inclusion of captions. 2D and 3D.
Aquifers: Plots one or more interval blocks (representing depth to surface and base declared in the Water levels table) in 2D and 3D logs.
Fractures: Represented with a tadpole column in 2D logs and oriented disks in 3D logs to show fracture depth, orientation and dip.
Special Symbols: Plots user-selected symbols at specific depths in the log, as read from the Symbols table. There are a variety of options. 2D and 3D.
Special Patterns: Plots user-selected pattern blocks between specific depths in the log, as read from the Patterns table. 2D and 3D.
Bitmaps: Plots raster images of a variety of formats between specified depth intervals.
Typically used to show raster logs or downhole photos. 2D and 3D.
Vectors: Represented with a tadpole column in 2D logs and with arrows in 3D logs to show the direction and bearing declared in the Vectors table. 2D and 3D.
Other Options: This grouping contains settings that control downhole resolution for deviated boreholes.
Clip Logs: This tool allows you to specify an elevation range for display in the single or multiple log diagrams. 2D and 3D.
Hang Section: Allows the user to align a selected stratigraphic on a horizontal line in profiles and sections.
Plot Surface Profile: Displays in profiles and sections a line representing the ground surface, read from a user-specified grid file.
Perimeter Annotation: Profiles and sections can be annotated with elevation labels, X,Y or distance labels, panel coordinates, titles, and other text.
Create Separate Location Map: The program will create a separate map illustrating the trace of the profile or cross section.
Lithology Legend: This legend displays rock types and colors as read from the project’s Lithology Type Table. Settings include location, size, and offset. 2D and 3D.
Stratigraphy Legend: This legend displays formation names and colors as read from the project’s Stratigraphy Type Table. Settings include location, size, and offset. 2D and 3D.
Well Construction Legend: This legend displays well construction material names and colors as read from the project’s Well Construction Type table.
Reference cage: (3-dimensional log displays only) The reference frame labels elevations, and X and Y coordinates.
Help / Contents / Reference / 2D Striplog Options, 3D Striplog Options.
See also 2D Striplog Options (page 274) and 3D Striplog Options (page 279) for more details.
Notes