6 - Preparing Data for Viewing: Basic Processing
Rebuilding the Basemap
Sometimes the Base Map needs to be rebuilt, Select Project, Create Update Base
map. This step will re calculate all seismic line intersections and give the
map a "fresh" new look.
Line and Project Statistics
It is usually a good idea to check Project, Project Statistics to ensure that
all seismic lines have the correct internal, external name, shot point ranges
and correct X,Y values.
Displaying Seismic line, list vs map
Select the 
button to detect a seismic line
from the map window. Left mouse button selects a line, middle mouse button
deletes the last selection and the right mouse button selects the whole line.
Your selection is highlighted as shown on the left.
Try clicking from one line to another seismic line. End a selection with a
right mouse click. Press Display Seismic button to see the seismic on the
right. Use the slider bar at the bottom of the screen to move along the
seismic line. SeisX will rasterize all of the seismic selected in this window.
You do not have to wait as you move along the line
Note the serious misstie problem at line intersections. We will need to
correct this problem in the next chapter.
Batch Processing -- Resampling, AGC, RMS Scaling
We have already created a directory under Seismic called process to hold our post stack seismic processing.
$ pwd D:/Projects/index/Seismic $ ls WorkingSet.PDB intersect.PDB intersect_name.PDX WorkingSet.PDD intersect.PDD process WorkingSet_LINE_NAME.PDX intersect.PDX workingset.txt $
As a first step we will process all lines to a consistent scaling and time sample. This pre-conditioning step is required for miss tie analyses. Select (Processing), (Process Seismic data), (Select all files), press (Ctrl) and press on the 3D called 300 -- It will take half an hour to process the 3D! Then (Resample), (Add process), 4ms , (Add Process), (AGC), 500ms, RMS 5000. Add a file description of "4ms, 500AGC, RMS 5000", Process ID 1, Output directory Seismic/process, 16 bit, Create and submit.
This last line of description will be displayed on all seismic windows
displays. (Create), (Submit).
While the processing jobs are executing in
background, examine the processing flow. This job deck is in your root
directory prefixed with .job_deck
$ ls -l .job* -rwhrwxrwa 1 2611 Jun 15 08:35 .job_deck015200 $ head -15 .job* $INPUT SYSTEM_PATH /C=/Paradigm/SeisX34/seisx_support FILE /d=/projects/index/101.STK.0.sgy FMT_FILE /C=/Paradigm/SeisX34/seisx_support/segy_v3.fmt #END_PARMS $RESAMPLE 4.000000e+00 #END_PARMS $AGC 5.000000e+02 5.000000e+03 #END_PARMS $OUTPUT FILE /d=/projects/index/Seismic/process/101.STK.1.sgy FMT_FILE DESC 4ms, 500AGC, RMS 5000 $ ...
After that data have been processed, the resampled data must be attached if you are running version 3.3 or older. Version 3.4 and newer will automatically attach the data. You will have to manually "attach" the seismic after Miss Tie and Phase corrections have been applied. Select (Project), (Attach SeisX'd files), (Add files), change the directory to Seismic/process, Select all, (Ok), (Ok)
Seismic can also be displayed that has not been attached by selecting (File), (SeisX), (Display Seismic). This option is useful to check a seismic line before it is attached or directly from a SeisX segy file.
Press Display Seismic Button after you confirm you have the correct line segment. To the right is the display in variable density
To properly Display Seismic to your desired scale and type of plot select
option from the (A)ttribute button 
in the
Seismic display window.
Change the Scaled Display to 1:100,000 and set the
display type to Variable Density. Update the System Display Attributes. The
program will remember these values for all subsequent seismic display
windows.
Different seismic process sequences for a given line can be displayed. Highlight the flow you desire in the panel below and press (ok)
Select Project, Define Working set working set can be changed to a different process version. Select process version 1 for all seismic lines. Re Build the Base Map (Create/Update Project Map). There should not be any beeping when the base map is re build (we now have the same sample interval).
Selecting Colors
The standard gray scale display is on the left with the red blue scale on the right.
Use the left mouse button to click inside the Color bar to display the blue to
red amplitude values. Each click of the mouse button will display a different
color map from the current project directory. Another way to select a
different color palette is to select Color, Adjust VD Seismic and Map Ribbon
Color, File Selector. Highlight the color scale as shown in the panel below.
Note: click on any screen picture and you will have the full size image. Press (Alt) and the left arrow and you will return to the document.
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