WellCAD Basics - Advanced Logic Technology

BOOK 1 - WELLCAD BASICS - 193
Tilt with MD values (left) and same data set with TVD values displayed after depth reference was changed.
Impacts on copying and pasting data
When copying logs between Borehole Documents (e.g. using the short cuts
CTRL+C and CTRL+V) it is always the master depth that will be used as reference
independent of the current depth scale set. E.g. even if a Depth log with TVD is
used as the current depth scale the data copied to another Borehole Document will
keep the original master depth (e.g. MD). This way we ensure that the master depth
is equal in both Borehole Documents. If log data is pasted into an application
outside WellCAD (e.g. EXCEL) the depth will always correspond to the currently
selected depth column (e.g. MD or TVD).
When pasting data into a Borehole Document that contains at least one Depth log
in addition to the master depth axis, the user will be asked to specify which of the
depth columns of the new document corresponds to the original master depth axis –
independent of the current depth scale selection. E.g. a core porosity log is copied
out of a Borehole Document that used Core Depth as master axis. The log is pasted
into a Borehole Document that contains wireline logs using Logger’s Depth as
master axis and has an additional Depth log column with Core Depth. A dialog is
displayed listing the master depth axis (by default named Depth) and the Core
Depth log in a drop down control. You have to choose the Core Depth column
because the master axis of the Borehole Document the core porosity log is copied
from represents Core Depth.