WellCAD Basics - Advanced Logic Technology

1.4.5.2 Generating a LAS File
BOOK 1 - WELLCAD BASICS - 117
WellCAD can save data in Log ASCII Standard (LAS) version 2.0 and 3.0. Ensure
no log is selected. Depending on which version of the LAS format will be generated
only Well Logs can be exported (LAS v2.0) or a variety of logs like Well, Mud,
Litho, Comment, Structure and Interval Logs can be exported (LAS v3.0).
� Go to the File >Export >Single File menu.
� In the file export dialog box select LAS Files (*.LAS) as file type.
� The LAS Export dialog box will open.
LAS file export options
The export options dialog box allows selecting from the list of Logs those who will
be exported into the LAS file. Depending on the selected LAS version more or less
log types are supported. To provide a certain order of data channels in the file
deselect all logs in the Logs To Export list and select them in the order they should
be exported.
To export data of a limited depth range only, specify the upper and lower limit in the
Depth Interval fields. For a LAS 3 export also the column delimiter can be set.
When exporting into LAS 2, the Well Logs selected for export might differ in their
sampling rate. As all data channels within the LAS file are required to use the same
sampling rate (“STEP” entry in the “~WELL INFORMATION” block of the LAS
header) the possibility to set a common sampling interval for the Well Log data is
given in the Sampling Rate field.
When exporting LAS 3 each log will be exported into its own Data Section Set. E.g.
Well, Mud, Analysis, Image or Structure Logs will be exported into Log Data
Sections. Lithology, CoreDesc, Comment, Marker, Strata or Interval Logs will use
the Top Data Sections as its format complies very well with all the interval data
types in WellCAD.