WellCAD Basics - Advanced Logic Technology

Classification:
APPENDIX A - 239
Classification allows the subdivision of a logs data range into separate intervals
(classes). Refer to 1.5.5 Setting up Classifications for details about how to set up a
classification for your log.
Position:
You can set the left and right position of the log track in selected units. The default
unit displayed is the one set for the Ruler Bar (see 1.3.2.4 Positioning Logs).
Set the left and right limits of the log border and select the unit you want the position to be measured in.
Filter:
The Filter function enables you to smooth your log data display on a moving
average basis. By selecting a filter width of 5, WellCAD will filter the log curve using
a moving average of five subsequent data points. The display of spiky data can be
smoothed.
This filter does not change the data itself, it is applied “on the fly” when the data is
displayed on screen and leaves the original data untouched. The Process >
Common menu offers filter algorithms that will create a new, filtered data set.
Editing Methods:
The Well Log can be edited interactively. To do so the log must be selected and not
locked (see 1.3.3.1 Base Settings). As soon as the mouse pointer is in the data area of
the log the cursor shape changes to a pen symbol. If the user clicks and drags the
mouse a curve is drawn and corresponding data points are generated. The sampling
rate set for the Well Log influences the roughness of the curve significantly. The
smaller the sampling interval, the smoother the curve comes out. Block input of data
is possible when holding the SHIFT key down while dragging the mouse (SHIFT
+ CTRL and drag to snap to nearest starting point). To erase data the CTRL key
must be pressed while dragging the mouse.