WellCAD Basics - Advanced Logic Technology

Common link lines and their effect on the data
Constant Shift:
Data Stretch:
Data Squeeze:
1.7.1.3 Commencing the Depth Matching Process
BOOK 1 - WELLCAD BASICS - 189
Once all anchor points are in place open the Edit menu and select the Match all
links option. The Borehole Document will be updated. Not only the data display
will show the applied shifts but also the data will have altered depth positions now.
Data will be re-sampled during the process if necessary.
Creating a new Depth column to track the shifts
It is possible to create a new Depth log to show a depth axis displaying the original
(non shifted) depth of the processed data tracks. E.g. a driller’s depth column could
be created to be available after the entire core description has been processed to
match a calibrated depth (e.g. logger’s depth).
The following steps must be performed:
� Start the Depth Matcher and make your selection of reference and logs to
process.
� Set your anchor points as described above.
Data interval will be shifted by
a constant amount
Data interval will be stretched
between the link lines.
Remaining sections will be
shifted up and down respectively
Data interval will be squeezed
between the link lines.
Remaining sections will be
shifted down and up respectively