The Well Log Chart Mod allows you to visualize the well log data. Well logs are gathered from geologic formations penetrated by a borehole but can be used to visualize any other type of data of this nature.
Well Logs are commonly used in the Oil & Gas industry to display measurements over the depth of one or more physical quantities in or around a well. These measurements typically contain electrical measurements such as resistivity, porosity attributes, and lithology values like gamma ray radiation encountered in a rock formation.
Also see the Vertical Line Chart Mod for another mod that can be used to render well logs.
Data Requirements
Every mod handles missing, corrupted and/or inconsistent data in different ways. It is advised to always review how the data is visualized.
To make the Well Log Chart work properly, the underlying data must be formatted in a long and skinny format. In other words, data must be unpivoted for the Mod to work properly.
The minimum number of columns for this mod to work are 3: Depth, Category, and Value. Well is optional and has no effect on the Mod other than filtering the data. The names of the columns can be different, but it is important to have the correct data type; Depth for the vertical axis only accepts numbers. The Category represents the measurement name (Gamma Ray, Caliper, Resistivity, etc.) and the value is the value of the measurement. The value column should be a numerical data type.
Setting Up the Mod
It is common for these types of well logs to have one column per measure, but it can be easily unpivoted by adding a transformation to have all measurements in a single column. In this case, it is Category. From the main menu choose Data and then Transform data... Then select the Unpivot transformation and click the Insert button. Select the columns to transform (all measures with the same data type except depth) and pass through the rest.
Configuring the Mod
The well log mod has 3 axis to setup; Depth, Category, and Value. Use the selectors to map each axis accordingly. Do not use any aggregation for the Depth. You should see a black dotted vertical line representing a measure. Use the top right gear to see the configuration options.
Well Log Track Settings Elements Description |
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① Inactive track settings: collapsed settings for track 1
② Active track settings: expanded settings for track 2
③ Inactive curve: This tab shows the first curve track settings for the active track
④ Active curve from the active track: This tab shows the settings for the selected curve
⑤ Add a curve to the active track: Duplicates the last curve from the last tab
⑥ Delete the last curve from the active track: Delete the last curve altogether
⑦ Delete last track: removes the last track
⑧ Duplicate last track: duplicates the last track, including all curves and settings
⑨ Close settings: closes the settings dialog popup
Using the Mod
Tooltip
Hover a track to show a tooltip for each curve.
Marking
Draw a rectangle on any track to select the rows across all tracks. Click an empty space in between task blocks to clear marking.
Building the Project
In a terminal window:
- npm install
- npm start
In a new terminal window:
- npm run server
Help and Support
This Mod is not supported by Spotfire® Support.
In the event of issues or to suggest features and enhancements, submit an issue in the Mod's GitHub repository.
For general questions about Mods, please post a question in the Forum for Extensions & Mods to make it visible and routed to the appropriate team(s) to respond.
More Information About Spotfire® Mods
- Spotfire Community Exchange: A safe and trusted place to discover ready-to-use Mods
- Developer Documentation: Introduction and tutorials for Mods developers
- Mods code examples on GitHub: A public repository for example projects
History about the Well Log Mod
The original Well Log Mod was developed by Justin Gosses called Wellio-viz.js. ported it to Spotfire using JSViz. JSViz is a custom spotfire extension available since version 7.5. After a while, it was ported again as a Spotfire Mod Visualization after introduced Mods on version 11.
Original Wellio-viz.js |
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