Automatic Mistie Analysis
The Automatic Mistie Analysis application allows you compare a group of seismic lines of different vintages and see what the varying static, phase and gain differences are between intersecting lines. At each intersection a least-squares routine tries to resolve any existing differences by applying a single static phase and gain change to each line.
How do I perform an automatic mistie analysis?
-
Create a mistie run and click
.
Runs are stored
so that you may return
to the results at a later time. -
Click
to add
the lines that
will be used in the mistie.
This can be done by selecting from the list
or by dragging out an area on the
map. The analysis will find all intersections for all lines selected
and will go through an initial calculation to determine the current
difference estimates. -
Set the Manual Mistie parameters over which the mistie will be performed. Only the data specified in this window will be used.
-
Set the type of Automatic Mistie you want to perform. You can run either a Horizon Mistie (resolves only statics based on a horizon pick) or Seismic Mistie (resolves any combination of static/phase/gain).
-
(Optional for Seismic Mistie) Set a
and Disable
Intersects with RMS = 0 to
ensure better results. Note:
For different vintages you may want to Filter
the data. This
will not be applied to the data just used for the analysis. -
Click
. - Check the results before
applying by clicking
or 
.
If a intersection
is not correct you can turn it off to take it out of the calculation.
Select the Dual
View tab
to see what values will be applied to each line. Note:
If
anything is changed you will need to recalculate to get the updated
results. -
Once you are satisfied with the results click
. A
warning pops up
letting you know that there are irreversible changes and you are going
to create a new version of the line. The phase and gain are processed
into a new seismic line and the static changes are updated as a shift
in the database. -
In the Batch Processing window, enter a File Description and specify a Version.
-
Click
.
Automatic Mistie Options
Also See
— MORE INFORMATION
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