WellCAD Basics - Advanced Logic Technology

Breakout Log
Description:
APPENDIX A - 405
The Breakout log can be used to pick vertical features such as borehole wall
breakouts and tensile fractures interactively from an image. The recorded data
contains depth (determined from the center of the picked feature), azimuth (position
on the borehole wall in deg), tilt (inclination of the breakout axis from the borehole
axis), length, opening angle in degree and one or multiple attributes describing the
picked feature. You can also import the data from ASCII files.
Data Format:
Depth, Azimuth, Tilt, Length, Opening, Class1, Class2,
Class3…
E.g.
Note, that the data values for the Type class displayed in the example above are the
codes referring to a particular breakout class and symbol in the corresponding
Category Dictionaries (*.TAD file) created in ToadCAD. These codes are strings
and do not have to be numerical codes as in older versions of WellCAD. Please
refer to the ToadCAD manual in order to learn about how to create attribute classes
(Tadpole Libraries).
Display Styles:
The data stored in the Breakout Log can be displayed in Projection and Symbol
style.
Projection Style: A line tracing or a polygon framing the breakout as shown in the
oriented and unrolled image of the borehole wall. The horizontal scale is from 0 to
360 deg.
Symbol Style: The picked breakout is displayed as tadpole. The body of the tadpole
with respect to the horizontal log scale shows the azimuth position. If the tadpole
has been created with a vector line (in ToadCAD) it will indicate the tilt component.