WellCAD Basics - Advanced Logic Technology

BOOK 1 - WELLCAD BASICS - 199
The menu contains multiple formats to specify a depth axis, data log or data/time
axis. If you select Depth, you will import the numerical values corresponding to that
column as a WellCAD Depth log (or as master depth axis if it has been chosen as
reference). A selection of Data will trigger an import as WellCAD Well log or Mud
log. UNIX Time indicates that the numerical data of the column corresponds to
seconds since 01 Jan 1970 at 00:00:00h and will be imported as WellCAD Depth log
(or reference axis) but it will be displayed as date/time string on the borehole
document. All other formats describe time and date where
hh hours
mm minutes
ss seconds
ss.s seconds with milliseconds after decimal point
DD numerical value day
MM numerical value of month (1-12)
MMM three letter abbreviated name of month (jan, feb, mar, apr…)
MMMM full name of month (January, February, March, April…)
YY year without century as decimal number (00 – 99)
YYYY year with century as decimal number (1970 – 2038).
If a date or time format is not listed you can type in your own format using the
characters explained above in the edit box of the drop down menu. The delimiter
used should not vary within a format string. The new format you typed in will be
stored in the WellCAD.ini file in section [CustomDateTime] and field
DateTimeF#=.
Please note that only one data column can be chosen as reference axis except for
date and time, which will be merged into a single axis.
Data type
Columns of the format Data will be imported as Mud logs or Well logs depending
on the settings made in this control.
GMT offset
The value specified as GMT offset will be subtracted from date/time channels
imported (UNIX time channels are not corrected) to ensure that imported data is
internally stored as GMT. When displaying the data a GMT offset can be added to
retrieve the correct date/time display.