Seismic Processing Workshop IO Utility - Parallel Geo

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Seismic Processing Workshop IO Utility V 2.1.18Parallel Geoscience Corporation

The SPW System .4About This Manual .6INTRODUCTION TO TAPE UTILITY. 7Who Should Use Tape Utility .7What You Need to Know to Operate Tape Utility .8Window Layouts .8Product Support .8TAPE UTILITY MAIN MENU . 9File Menu .10Edit Menu .11Control Menu .12Window Menu .14Help Menu .17TAPE ANALYSIS. 18Tape Analysis Window .19Note on Number Systems .22Example:SEG-Y Format.24Example:SEG-D Format.31FILE ANALYSIS . 39File Analysis Window .40Note on Number Systems .43SPW Reports .45Example:SEG-Y Format.66Example:SEG-D Format.74Example:SEG-2 Format .822

DATA REFORMAT . 91Reformat Window .92Format Types.94Example:Reformat from SEG-Y Format .95Example:Reformat from SEG-D Format .100Example:Reformat from SEG-2 Format.102Outputting SPW files in SEG-Y format .104Tape Database .110TAPE IMAGE COPY . 111Copy Window .112Input data types .116Unformatted .117SEG Y .118SEG D .122Creating Multiple Tape Copies .123Input and Output from more than one tape .124SPW FILE MERGE . 125SPW File Merge Window .126TAPE IMAGE VERIFY . 129Verify Window .130Example:Verifying a SEGY Tape Image .1333

IntroductionThe SPW SystemWelcome to the Seismic Processing Workshop (SPW) system. SPW is a suite of applicationswritten by Parallel Geoscience Corporation for processing seismic and/or GPR data. The SPWsystem was originally written for the Macintosh computer platform and has been redesignedand rewritten using a cross platform framework. SPW is currently available for the WindowsNT, Windows XP, Windows 2000, Linux, and Macintosh PowerPC operating systems. TheSPW system is composed of the following applications – FlowChart, Executor, SeisViewer,Tape Utility, and Vector Calculator. Each of these applications is also available separately.The FlowChart allows you to build processing flows and set the parameters for processingsteps. A simple graphical user interface reduces the learning curve and accelerates yourprocessing time. An interactive tutorial of the SPW FlowChart can be viewed tIntroduction.htmThe Executor is a standalone seismic job execution engine. The Executor is multi-threaded totake full advantage of modern multiple CPU systems. The output of the FlowChart can be runby the Executor on the same system as the FlowChart or sent to a separate computer on anetwork. A single high-end system running the Executor can service multiple FlowChart clientsystems. This client-server design enables large jobs to be run on more powerful systems whileuser interactive tasks can occur on inexpensive desktop or laptop PC systems.The SeisViewer is a seismic data display and montage application. Seismic data may bedisplayed from either SEG Y format disk files or from the SPW internal processing format.Drawing tools are included to allow you to annotate your seismic display. You can also importbitmap graphics files in BMP format to build a montage of other information with your seismicdisplay. SeisViewer utilizes the standard Windows print drivers commonly delivered withprinters for generating hardcopy output. You can also generate a BMP output file for use byother graphics applications. An interactive tutorial of the SPW SeisViewer can be viewed erIntroduction.htmSPW Tape Utility is a data reformat, analysis, copy and verify program. As the name indicates,tape data handling is included in the application. All standard and many non-standard seismicdata formats are handled in the data reformatting portion of the application. The copy andverify functions allow you to quickly and easily duplicate tapes for archive and/or distribution.The analysis functions allow you to view the contents of a tape in multiple human readableformats and enable you to decode the contents of the tape. An interactive tutorial of the SPWTape Utility can be viewed ityIntroduction.htm4

The SPW Vector Calculator is a trace analysis tool that operates like a scientific calculator,using Reverse Polish Notation. It can operate using scalar numbers as well as one-and twodimensional vector numbers. You may use it for simple mathematical functions, or to analyzeseismic trace data. You can create plots of seismic trace analyses, scale and control theannotation of these plots, as well as print them for reports. An interactive tutorial of the SPWVector Calculator can be viewed lculatorIntroduction.htmThe SPW system is designed to be user expandable. Parallel Geoscience will release theprogramming API interfaces for the FlowChart and the Executor to all SPW users in the nearfuture. This will allow you to add your own customized processing algorithms and data formatsto the SPW system.5

About This ManualThis manual describes the main features of the SPW IO Utility. Examples will be presented formost of the commonly performed tasks. The features of this utility include the following:1)2)3)4)5)6)Tape AnalysisFile AnalysisData ReformatTape Image CopyFile MergeTape Image VerifyManual DevelopedbyParallel Geoscience CorporationPO Box 5989Incline Village, NV 89450Tel: 1-541-412-7793E-mail: support@parallelgeo.comWeb: http://www.parallelgeo.com,SPW, Seismic Processing Workshop, SPW IO Utility, FlowChart, SPW Executor andSeisViewer are trademarks of Parallel Geoscience Corporation. All other products aretrademarks of their respective companies.This manual is proprietary information of Parallel Geoscience Corporation and is for theinternal use only by licensed purchasers of SPW products. 2002 Parallel Geoscience Corporation6

Introduction to IO UtilityParallel Geoscience Corporation has been providing state-of-the-art seismic software solutionssince 1988. Our Company philosophy is to offer quality products at affordable prices withexceptional support. We have satisfied users on every continent of the globe. This chapterintroduces Parallel Geoscience Corporation’s IO Utility. Here you can find descriptions of thecapabilities of the IO Utility application.IO Utility is an interactive, window-oriented, menu driven application. It has six main features,which may be accessed upon opening the application. These features are 1) Tape Analysis, 2)File Analysis, 3) Data Reformat, 4) Tape Image Copy, 5) SPW File Merge and 6) Tape ImageVerify.User Interface at StartupWho Should Use IO UtilitySince IO Utility is a stand-alone application, it can be used in any environment where tape ordisk data sets need to be accessed, analyzed, or reformatted. It is suitable for the field or office,allowing novice and well-experienced users to take advantage of its unique state-of-the-artcapabilities.Data management operations will find that routine chores run quickly, efficiently andinexpensively on this PC based software. Processing houses will find everything they need forcopying, reformatting and analysis, leaving expensive workstations and mainframes free formore compute intensive tasks. Tape Utility is ideal for Field QC work. Multiple tape output,and special problem solving features are strong reasons for taking SPW IO Utility anywhere inthe world.7

What You Need to Know to Operate IO UtilityThis manual assumes you have a basic awareness of the Windows environment, SEG digitaltape standards, as well as SCSI tape drives and disk functions. If you have never usedWindows before, and are unfamiliar with basic operations, have someone give you a personaldemonstration or consult the owner’s manuals and tutorials. Consult the manufacturer’sdocumentation on the use of SCSI tape devices. The SEG standards may be obtained from:Society of Exploration GeophysicistsP.O. Box 702740Tulsa, OklahomaUSA 74170-27401 918-497-5500Many of the SEG technical standards are available as free downloads from:http://seg.org/publications/tech-stand/Window LayoutsAll window layouts in IO Utility follow the Microsoft Windows convention. The name of thewindow appears at the top. If the standard default colors are used, the bar at the top is brightblue when the window is active and turns a faded blue when another window is selected. Atthe far right of this bar is the point-and-click X box, which allows you to close the window.Adjacent to this box are often two other boxes. One is for resizing. The other is to iconify thewindow to the bottom of the screen. Clicking on the icon makes the window reappear.Typically an OK or Cancel button is provided to allow you to exit the active window. Bymoving the cursor to the edge or corner of a window and using the click-and-drag techniqueyou can resize the window. If you want to relocate the window to another part of the screen,click and drag the blue bar at the top of the window and position the window on the screenwherever you please.Product SupportFor solutions to questions about IO Utility, first look in this manual or consult the release notesaccompanying every IO Utility software release. If you cannot find answers in yourdocumentation, contact Parallel Geoscience Corporation via E-mail (support@parallelgeo.com,or phone ( 1-541-412-7793). Please be ready to provide the following information: Your name.Your company name.The IO Utility version you are using.The operating system you are using.The type of hardware you are using.What you were doing when the problem occurred.The exact wording of any error messages which appeared on your screen.Any other pertinent data set information.8

IO Utility Main MenuSeveral IO Utility commands are accessed through the main menu on the SPW IO Utilitywindow. Each of these commands will be described in the following pagesThe SPW IO Utility main menu.9

File MenuFile MenuSave - Not active.Save as - Not active.Print - Not active.Print Setup - Not active.Start Executor - Launches the Executor.Start FlowChart – Launches the FlowChart application.Start SeisViewer – Launches the SeisViewer application.Start VCalc - Launches the Vector Calculator application.10

Edit MenuEdit MenuUndo – Not active.Cut – Not active.Copy – Copies selected information in the dump window that may be transferred to a text editor using thatapplications paste command.Paste – Not active.11

Control MenuControl MenuRewind – Rewinds the tape in the selected SCSI tape drive to the start of tape.Unload – Unloads the tape in the selected SCSI tape drive.Skip blocks – Skips the tape in the selected tape drive by the number of blocks entered in the Blocks to skipdialog. Positive entries skip the tape forward. Negative entries skip the tape backward.Blocks to skip dialog.Skip files – Skips the tape in the selected tape drive by the number of files entered in the Files to skip dialog.Positive entries skip the tape forward. Negative entries skip the tape backward.Files to skip dialog.12

Skip to EOD – Skips the tape in the selected tape drive to the end of data on tape.13

Window MenuWindow MenuMain Window – Opens the SPW IO Utility Main Window dialog, from which all of theutilities are accessed.The Main Window dialog14

Control Window – Opens the SPW IO Utility Control window.The Control Window dialogSelect Drive – Select any attached SCSI tape drive.Rewind – Rewinds the tape on the selected tape drive.Unload – Rewinds and unloads the tape on the selected tape drive.Skip blocks – Skips forward or backward by the number of blocks indicated in theadjacent parameter field. Positive values cause the tape to skip forward. Negative valuescause the tape to skip backward.Skip files – Skips forward or backward by the number of files indicated in the adjacentparameter field. Positive values cause the tape to skip forward. Negative values causethe tape to skip backward.Skip to EOD – Skips forward to the end of data on tape.Halt – Stop the current action on the selected tape drive.Close – Close the Control Window.15

Console Window – Opens the SPW IO Utility Console window.The Console dialog16

Help MenuHelp MenuAbout – Opens a dialog that contains the SPW IO Utility version number.17

Tape AnalysisThe Tape Analysis utility is designed for the efficient analysis of tape s whose content isunknown or problematic. To use the Tape Analysis utility, simply click on the Tape Analysisbutton in the Main Window and the Tape Analysis window will appear.Main WindowTape Analysis WindowThe remainder of the chapter will: (1) discuss the various features of the Tape Analysiswindow; (2) explain the number systems that the Tape Analysis utility is capable ofinterpreting; and (3) provide examples of the analysis of actual SEG-Y, SEG-D, and SEG-2data s to determine the parameters necessary to reformat those s to SPW format.18

Tape Analysis WindowThe Tape Analysis Window.Parameter DialogSelect drive The Select drive button opens the Input Tape Select dialog, which allows you toselect an external tape drive that contains a physical tape with data to be analyzed. Once adrive has been selected, the name of the drive will appear beneath the Select drive button.No rewind on close – The input tape will not be rewound at the end of the tape analysissession.Unload on EOT – The tape automatically rewinds and unloads when the end of tape markeris found.Auto-loader – Indicates that an auto-loader will be used to load multiple input tapes.M4 mode – Check M4 mode if an M4 tape drive is selected.19

Dump Format – A drop down menu is used to select the format in which the selected data willbe dumped into the Tape dump window. Dump formats include Hexadecimal, ASCII,EBCDIC, Short Integer, Long Integer, IBM Float, and IEEE Float.Show dump window - The Show dump window button is a toggle that allows the dumpwindow to be displayed or hidden. When the Show dump window button is clicked, the Tapedump window appears and the button toggles to the Hide dump window button.Refresh dump – The Refresh button is used to redump the same block of data after changingt

Who Should Use IO Utility Since IO Utility is a stand-alone application, it can be used in any environment where tape or disk data sets need to be accessed, analyzed, or reformatted. It is suitable for the field or office, allowing novice and well-experienced users to take advantage of its unique state-of-the-art capabilities.

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