WellCAD Basics - Advanced Logic Technology

204 - BOOK 1 - WELLCAD BASICS
1.8 Creating Cross-Plots
www.alt.lu
The cross-plot functionality has been completely revised compared to WellCAD
versions older than WellCAD 4.1. Nevertheless, old cross-plot documents stored in
*.WCC files can still be opened, but can not benefit from the enhanced capabilities
of the new cross-plot module, which is integrated in the Borehole Document and
saved as *.WCL file.
Please note that the new cross-plot capabilities are part of all WellCAD versions
released after 4.1 Basic versions. For users of older versions the upgrade to
WellCAD 4.1 or to WellCAD 4.1 including the cross-plot module is optional.
A number of tutorials is available guiding through different aspects of the cross-plot.
The following paragraphs explains the cross-plot features in a more general manner.
Since WellCAD v 4.4 Cross Plots are part of a general chart tool. Besides cross plots
you can also create Polar & Rose diagrams in a similar workspace. For the latter
functionality to be accessible the Structure & Image Processing add-on module
needs to be activated on your license. Details about creating Polar & Rose diagrams
can be found in Book 3 – Image Module.
1.8.1 Charts and Plots
To create a cross-plot, first open the WellCAD Borehole Document (*.WCL) file
that contains your data. You can create many different cross-plot charts for the data
contained in one Borehole Document. You can not create a cross-plot with data
coming out of multiple Borehole Documents. If you want to create a multi-well
cross-plot you have to assemble the data in a single document first.
The following figure shows a Gamma Ray vs. Density cross-plot chart. This chart is
made out of three different plots, where each plot corresponds to the data of one
well. You could see a plot as the data series providing the data for a chart. For each
plot the symbol, color and depth range for the cross-plot can be selected
individually. The different plots share a single X- and Y-axis in the chart.