Proposed - Encana SEGY Naming Standards June 23 2003

Recommended File Naming Standards for EnCana SEGY

So why do we want a long line name?
The geophysicist would like to be able to identify certain types of information just by looking at the file name. Information such as:

Unique reference number -- where can I get another copy of the data?
Line name -- how do my partners identify the seismic line?
Stack type -- am I looking at a migration or at a stack?
Date -- when were these data processed, is this a recent version of the line?
Processor -- who did the processing, is this version the best that I have?

What does our existing AEC legacy CORPORATE DATA look like?
Here are some of the CD's that have been copied to spinning disk. This group of lines have both a CD and a SAM number. The additional fields in the name contain useful information but much of it is unclear. It is possible to extract additional descriptions from the SAM data base.
CD-21055.a37403.91-1479.un.sfk.sgy
CD-21260.a34279.AC-6.gox92.um.sgy
CD-21717.a35195.MAR-ZSR-6.echo97.fs.sgy
CD-21820.a19020.81-A4R16.ksp01.fscmigwhtfxdcn.sgy
CD-30481.a57658.FBAG00016.stack.gox2002._fstk.sgy
CD-31728.a16589.OMR-88-03.un.um.sgy
Some CD's we can't identify (without a research effort with SAM). This group of data (approx 25%) appears not to contain a SAM number. At least we can look a SAM and see what is suppose to be on the physical CD.
CD-11506.52.egs97.um.sgy
CD-11506.322.egs97.us.sgy
CD-12455.slimlk-99-01.vgdc1999.sl1fxfm.sgy
CD-12479.aec_west.cabincreek.ps-migs.unfiltered.kak-7.sgy
After the data is converted into SeisX, shot points are corrected and XY's are inserted. This is the "good" data I'd want to use, only if I could identify what it is! Here we have SeisX data under fs06. What are these data? We have lost our link of CD name to SAM. Are these SAM numbers? Are there any line names here?
42504_es_nov00.FXFMG.0.sgy
5700.MIGUL.0.sgy
5701.MIGUL.0.sgy
76762_DUB-02-04.FMD.0.sgy
ApodmomigA.MIG.0.sgy
Apostr1.MIG.0.sgy
psmig_s.PSMIG.0.sgy
psmigfxy_n.PSMIGF.0.sgy
psmigfxy_s.PSMIGF.0.sgy
SUFF-02-01B.FMG.0.sgy
SUFF-02-01B.FMZ.0.sgy
suff1714.MIGPSD.0.sgy
Here is a script to pull out some key information re these line. Little b means Big Endian (Unix) and the little l means Little Endian (PC).
~ekeyser/perl/spids.pl
  External_File_Name                                           Trace Spid/li Cdp/tr  Xcoord   Ycoord Trace Spid/li Cdp/tr  Xcoord   Ycoord  Cdp's Num_Spid Ratio
b 42504_es_nov00.FXFMG.0.sgy                                       1    101      1   490275  5529968   313    257    313   485047  5529978    313    156   2.01
b 5700.MIGUL.0.sgy                                                 1      1      1   530908  5587560   341    171    341   530902  5581862    341    170   2.01
b 5701.MIGUL.0.sgy                                                 1      1      1   532513  5587937   275    138    275   532578  5583358    275    137   2.01
b 76762_DUB-02-04.FMD.0.sgy                                        1    105    210   515876  5565858  2013   1111   2222   505819  5565614   2013   1006   2.00
l ApodmomigA.MIG.0.sgy                                            3D      1      1   520344  5617436          135    467   506372  5613419
l Apostr1.MIG.0.sgy                                               3D      1      1   520344  5617436          135    467   506372  5613419
b psmig_s.PSMIG.0.sgy                                             3D     66      1   496362  5586643          391    317   488462  5578518
b psmigfxy_n.PSMIGF.0.sgy                                         3D      1      1   496710  5602285          555    412   488490  5585665
b psmigfxy_s.PSMIGF.0.sgy                                         3D     66      1   496362  5586643          391    317   488462  5578518
b SUFF-02-01B.FMG.0.sgy                                            1    277    554   512551  5610369   897    725   1450   511375  5614660    897    448   2.00
b SUFF-02-01B.FMZ.0.sgy                                            1    277    554   512551  5610369   897    725   1450   511375  5614660    897    448   2.00
b suff1714.MIGPSD.0.sgy                                           3D    305    341   495120  5602263          587    642   489098  5593804
Here is another script to pull some more information out of the headers. Notice how the internal name provides some more clues to the data:
 ~ekeyser/Perl/phase.pl
External_File_Name                                        Internal               Format Samples SI   Max_amp   RMS_amp End_Y End_X Phase
42504_es_nov00.FXFMG.0.sgy                                  42504_es_nov00            1    1500  2   17720.1    2778.6   313     0   0.0
5700.MIGUL.0.sgy                                            5700                      1    1001  2       6.2       1.3     0     0   0.0
5701.MIGUL.0.sgy                                            5701                      1    1001  2       5.8       1.3     0     0   0.0
76762_DUB-02-04.FMD.0.sgy                                   76762                     1    2000  1   21596.2    3001.2  2013     0   0.0
psmig_s.PSMIG.0.sgy                                         s_3d_merge                1     801  2  5.64e+04     1e+03   317   391   0.0
psmigfxy_n.PSMIGF.0.sgy                                     n_3d_merge                1     799  2    7660.6     999.1   412   555   0.0
psmigfxy_s.PSMIGF.0.sgy                                     s_3d_merge                1     801  2  6.39e+04       999   317   391   0.0
SUFF-02-01B.FMG.0.sgy                                       SUFF-02-01B               1    2000  1   18466.1    3074.2   897     0   0.0
SUFF-02-01B.FMZ.0.sgy                                       SUFF-02-01B               1    2000  1  7.62e+04  1.16e+04   897     0   0.0
suff1714.MIGPSD.0.sgy                                       suff1714                  1     750  2  5.35e+04  6.99e+03     0     0   0.0
I can look at the ebcdic header for more clues but it is very time consuming. A better solution is to adopt some Long Line Name definition for Data Management purposes. The following is recommended:
Proposed File Naming Conventions
The following naming convention be used:

2D : reference number.line name.stack type & version.month & year of generation.processing company name.sgy

Use either version for 3D :

reference number.line name.3D-area_name.stack type & version.month & year of generation.processing company name.sgy

reference number.3D-area_name.3D.stack type & version.month & year of generation.processing company name.sgy

Naming Examples:
F73379.ECA-VER-993D-02P.Type.042000.abc.sgy
A44267.MKD-5.f-fk-mig-100.022003.gox.sgy
P172939.02-SBL-2.f-fk-mig-94.022003.gox.sgy
A43572.01-KUG-13.f-fk-mig.022003.gox.sgy
A44263.MKD-2N.f-fk-str.022003.gox.sgy
P173286.3D-JENSEN.3D.test-istk.022003.gox.sgy
P81848.PCP-MERG-003DM-08.3D-JENSEN.f-ma-mig-2of5.042000.gox.sgy
The external line names must adhere to unix naming conventions. Spaces, dots, brackets, special characters, & are not to be used!
Dashes and Underscores are the only valid field delimiters. If the data are brute stack, the descriptor temp should be included in the stack type field. These data will automatically be removed from out system after a period of time.
Here is the current list of valid stack types and the list of current valid processor names. Note that only the first sub field of the stack type has to be valid. Please contact the author if these lists are not sufficient.
In order to identify data on our ftp data server and to verify that we have all data, an ascii text file is required to the following format:
To: eric@arnica.ws
From: morgand@geo-x.com
Size     File
 1424000 P12345.MODEL1-876.mig.032003.gox.sgy
   14415 P12345.MODEL1-876.mig.032003.gox.sgy.txt
 1424000 P12345.MODEL1-876.ro.032003.gox.sgy
   14755 P12345.MODEL1-876.ro.032003.gox.sgy.txt
The common name is be added to a 3D data set as the third field for those contractors use to the former PCP specifications. If the 3D does not have a line name (former AEC) , the 3D-area_name becomes the second field and just the flag 3D in the third field. Here is a 3D Example from the former AEC naming:
P173286.3D-JENSEN.3D.test-istk.022003.gox.sgy
If a 3D has to be broken into separate parts it should be named as follows:
P81848.PCP-MERG-003DM-08.3D-JENSEN.f-ma-mig-1of5.042000.gox.sgy
P81848.PCP-MERG-003DM-08.3D-JENSEN.f-ma-mig-2of5.042000.gox.sgy
P81848.PCP-MERG-003DM-08.3D-JENSEN.f-ma-mig-2of5.042000.gox.sgy
P81848.PCP-MERG-003DM-08.3D-JENSEN.f-ma-mig-2of5.042000.gox.sgy
P81848.PCP-MERG-003DM-08.3D-JENSEN.f-ma-mig-2of5.042000.gox.sgy
Note the 3D prefix, this will permit the 3D's to sort together. Note that the new EnCana standard will work for data from both the way AEC and PCP use to describe data.
Changes to the reference numbers will be required for EnCana. We have decided to use a series of prefix characters to preserve data integrity. The new prefix codes are:

Prefix Reference Number

A XAEC (North America including Alaska)

P XPCE (International)

F EnCana (International)

I- XAEC (International)

N EnCana (North America)

Blank Don't know or unknown

How do we work with Long Line names in SeisX?
Here are a new lines that meet the new, proposed standard:
A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy
A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.MIG.0.sgy
F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.042003.gox.MIG.0.sgy
F102409.IMP-CA-83655B-81.stk.012003.lyx.STK.0.sgy
P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy
Recommended to change the Internal Line name (used for pick files and labelling the base map to the last two subfields of the second dot deliminated field.
ls *sgy > junk
bash-2.03$ ~ekeyser/perl/phase.pl
External_File_Name                                        Internal               Format Samples SI   Max_amp   RMS_amp End_Y End_X Phase
A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy          01KUG13                   3    2000  4   19205.6    3110.6  2135     0   0.0
A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.MIG.0.sgy        84946-84                  3    1750  4   21518.3    3113.6   313     0   0.0
F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.042003.gox.MIG.0.sgy 2003-13                   3    2000  4   23851.4    3115.9  1659     0   0.0
F102409.IMP-CA-83655B-81.stk.012003.lyx.STK.0.sgy           F102409                   1    3051  2      40.5       8.0  1477     0   0.0
P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy          02SBL2                    3    2000  4   20251.2    3122.7  1112     0   0.0
Here is how to change the internal line name to the first dot deliminated field
bash-2.03$ ~ekeyser/perl/fixname.pl -f1
A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy 01KUG13 to A43572
A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.MIG.0.sgy 84946-84 to A4764
F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.042003.gox.MIG.0.sgy 2003-13 to F101680
F102409.IMP-CA-83655B-81.stk.012003.lyx.STK.0.sgy F102409 to F102409
P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy 02SBL2 to P172939
Here is how to change the internal line name to the last two sub fields of the second field. This is the name that appears on the map and the name for the pick files.
bash-2.03$ ~ekeyser/perl/fixname.pl -f22
A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy A43572 to KUG-13
A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.MIG.0.sgy A4764 to 84946-84
F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.042003.gox.MIG.0.sgy F101680 to 2003-13
F102409.IMP-CA-83655B-81.stk.012003.lyx.STK.0.sgy F102409 to 83655B-81
P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy P172939 to SBL-2
Here's how to get a list of the internal line name
bash-2.03$ ~ekeyser/perl/phase.pl
External_File_Name                                        Internal               Format Samples SI   Max_amp   RMS_amp End_Y End_X Phase
A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy          KUG-13                    3    2000  4   19205.6    3110.6  2135     0   0.0
A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.MIG.0.sgy        84946-84                  3    1750  4   21518.3    3113.6   313     0   0.0
F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.042003.gox.MIG.0.sgy 2003-13                   3    2000  4   23851.4    3115.9  1659     0   0.0
F102409.IMP-CA-83655B-81.stk.012003.lyx.STK.0.sgy           83655B-81                 1    3051  2      40.5       8.0  1477     0   0.0
P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy          SBL-2                     3    2000  4   20251.2    3122.7  1112     0   0.0
Yup, that's what I want.
Use the Unix link command to create a short name
I have heard that many people do not like the long line name because this long name get's truncated in the SeisX listing as seen below. My answer is to use the spids.pl and phase.pl listing to see the same information. It's actually a better listing because it contains more information and contains data for all versions of a seismic line. Click on the image to see the readable version.

Long Name

Choice number 2 is to use a link to make a link with the shortened line name. Here is an awk script to make the link. Notice that the advantage is SeisX get's to use a short name but the user can still identify where the data came from.
ls *sgy > junk
find /auto/fs63/ekeyser/seisx/segy/2d -name "*.0.sgy" > junk
bash-2.03$ more junk
/auto/fs63/ekeyser/seisx/segy/2d/F102409.IMP-CA-83655B-81.stk.012003.lyx.STK.0.sgy
/auto/fs63/ekeyser/seisx/segy/2d/F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.042003.gox.MIG.0.sgy
/auto/fs63/ekeyser/seisx/segy/2d/A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy
/auto/fs63/ekeyser/seisx/segy/2d/A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.MIG.0.sgy
/auto/fs63/ekeyser/seisx/segy/2d/P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy

awk -f ~ekeyser/Ak/2last3link.ak < junk

bash-2.03$ awk -f ~ekeyser/Ak/2last3link.ak < junk
ln -s /auto/fs63/ekeyser/seisx/segy/2d/F102409.IMP-CA-83655B-81.stk.012003.lyx.STK.0.sgy IMP-CA-83655B-81.STK.0.sgy
ln -s /auto/fs63/ekeyser/seisx/segy/2d/F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.042003.gox.MIG.0.sgy ECC-NWT-2003-13.MIG.0.sgy
ln -s /auto/fs63/ekeyser/seisx/segy/2d/A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy 01-KUG-13.MIG.0.sgy
ln -s /auto/fs63/ekeyser/seisx/segy/2d/A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.MIG.0.sgy ESSO-CA-84946-84.MIG.0.sgy
ln -s /auto/fs63/ekeyser/seisx/segy/2d/P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy 02-SBL-2.MIG.0.sgy

cd links
awk -f ~ekeyser/Ak/2last3link.ak < ../junk > run
chmod +x run
./run
Here's what the files look like:
bash-2.03$ ls
01-KUG-13.MIG.0.sgy
02-SBL-2.MIG.0.sgy
ECC-NWT-2003-13.MIG.0.sgy
ESSO-CA-84946-84.MIG.0.sgy
IMP-CA-83655B-81.STK.0.sgy
Here are all the files with the link:
ls -al
total 64
lrwxrwxrwx   1 ekeyser  expl          83 Oct 23 12:49 01-KUG-13.MIG.0.sgy -> /auto/fs63/ekeyser/seisx/segy/2d/A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy
lrwxrwxrwx   1 ekeyser  expl          83 Oct 23 12:49 02-SBL-2.MIG.0.sgy -> /auto/fs63/ekeyser/seisx/segy/2d/P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy
lrwxrwxrwx   1 ekeyser  expl          92 Oct 23 12:49 ECC-NWT-2003-13.MIG.0.sgy -> /auto/fs63/ekeyser/seisx/segy/2d/F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.04200
3.gox.MIG.0.sgy
lrwxrwxrwx   1 ekeyser  expl          85 Oct 23 12:49 ESSO-CA-84946-84.MIG.0.sgy -> /auto/fs63/ekeyser/seisx/segy/2d/A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.
MIG.0.sgy
lrwxrwxrwx   1 ekeyser  expl          82 Oct 23 12:49 IMP-CA-83655B-81.STK.0.sgy -> /auto/fs63/ekeyser/seisx/segy/2d/F102409.IMP-CA-83655B-81.stk.012003.lyx.STK
.0.sgy
Here is what the SeisX listing looks like:

Links Name

Now we have the link short name in our display.
Copy files to your short line name
Last choice is to copy the files to the new short name. This is a one way street, you can make it smaller, but you cannot go back.
ls *sgy > junk
awk -f ~ekeyser/Ak/2last3.ak < junk
cp A43572.01-KUG-13.f-prfk-prmig.022003.gox.MIG.0.sgy 01-KUG-13.MIG.0.sgy
cp A4764.ESSO-CA-84946-84.f-pr-mig.072003.gox.MIG.0.sgy ESSO-CA-84946-84.MIG.0.sgy
cp F101680.ECC-NWT-2003-13.f-pr-fk-fx-mig.042003.gox.MIG.0.sgy ECC-NWT-2003-13.MIG.0.sgy
cp F102409.IMP-CA-83655B-81.stk.012003.lyx.STK.0.sgy IMP-CA-83655B-81.STK.0.sgy
cp P172939.02-SBL-2.f-prfk-prmig.022003.gox.MIG.0.sgy 02-SBL-2.MIG.0.sgy

awk -f ~ekeyser/Ak/2last3.ak < junk > run
chmod +x run
run
Naming Recommendation
It is recommended that the Long Line Name be adopted in order to simplify the identification of data for Data Management purposes. The fully described data will be part of the Corporate Archive.
Note: Then end user is free to use what ever line name they desire!
As a Post Script, both SeisX and SeisWare support the idea of having a long, dot delimited line name. They both will add options to support the additional information that can do some of the following:

Sort display on year, processor, flow, owner
Grid sets defined by these additional fields
Grid Balance your data grouped by processor
Here are some useful links for more information for those in the Intranet at EnCana:

The why for EnCana segy, examples of using some additional header information
Advantages of EnCana segy, attaching multiple versions, 3D examples
Workstation SEGY Standards (2D, 3D and field data exchange) The definition

Site Owner: Eric Keyser
Last Updated: October, 26 2003

Prefix	Reference Number
A	XAEC (North America including Alaska)
P	XPCE (International)
F	EnCana (International)
I-	XAEC (International)
N	EnCana (North America)
Blank	Don't know or unknown

Recommended File Naming Standards for EnCana SEGY

So why do we want a long line name?

What does our existing AEC legacy CORPORATE DATA look like?

Proposed File Naming Conventions

How do we work with Long Line names in SeisX?

Use the Unix link command to create a short name

Copy files to your short line name

Naming Recommendation

Site Owner: Eric Keyser Last Updated: October, 26 2003

Site Owner: Eric Keyser
Last Updated: October, 26 2003