Seismic Viewer: Graphical Stretch/Squeeze
Stretching/Squeezing allows you to modify a synthetic or curves by
changing the time depth relationship for that well. In order
to
perform
stretch/squeeze a synthetic or velocity curve must be displayed on the
seismic.
How do I stretch/squeeze a synthetic or curve?
-
Click the Stretch/Squeeze icon (
)
or select Stretch/Squeeze
from the Well
menu. -
Select a well from the list.
-
Click on the seismic at a location that you wish to anchor the curve. A large yellow arrow (the anchor) will appear denoting a static point.
- Click on another location above or below the anchor to
define
a zone that you wish to stretch or squeeze. Hold the mouse down and
drag your cursor up or down to either stretch or squeeze the zone
defined.
- To move
your anchor down to the arrow location, use the keyboard shortcut J
or click and drag the anchor to a new location.
- To cancel the
stretch/squeeze action press the Esc key before releasing the
left mouse
button.
- To undo
a change click
, or use the keyboard combinationCtrl
+ Z .
- To move
your anchor down to the arrow location, use the keyboard shortcut J
or click and drag the anchor to a new location.
-
To save the changes made, click
to give
the curve a new name and source and then click 
.
If you wish
to overwrite the existing curve, click .
General Information
Select Well
Select a well to stretch or squeeze. By default the last well you were
working with will be highlighted. If you want to select a different
well, click on a well symbol on the Seismic Viewer or on the Basemap.
Velocity Curve Parameters
Velocity Curve: The active velocity curve for the well. This is the starting curve that will be modified by the stretch/squeeze process.
Source: The source for the active velocity curve for the selected well.
Interval Velocity: This readout tracks the
average interval velocity between the anchor
arrow
and the stretch/squeeze arrow while a stretch squeeze is being
performed.
This can be used to help keep data values in a reasonable range. Change
the units to see this value displayed with different units.
Stretch/Squeeze Operations
Undo: Allows
you to undo the last stretch or squeeze operation.
Undo All: Allows you to
undo all
stretch and squeeze operations
performed on the
curve after the last save.
Save: Saves the active velocity
curve to the
database with all the
stretch/squeeze
operations performed on it. This allows other applications to
see
the modified velocity curve and ensures that it will be used the next
time
a Seismic Viewer is brought up.
Save As: Allows you to save the
active
velocity curve to the database without
overwriting
the existing velocity curve. The new curve becomes the active
velocity
curve. Other applications will recognize the new velocity
curve,
and it will be used the next time a Seismic Viewer is brought up.
Also See
— MORE INFORMATION
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